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375 - Pulse or digital communications

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Class / Patent application numberDescriptionNumber of patent applications / Date published
375340000 Particular pulse demodulator or detector 1139
375346000 Interference or noise reduction 571
375322000 Angle modulation 201
375345000 Automatic gain control 141
375344000 Automatic frequency control 135
375317000 Automatic baseline or threshold adjustment 100
375320000 Amplitude modulation 82
Entries
DocumentTitleDate
20130028352DOWN-CONVERTER - A down-converter for receiving a multiband radio frequency signal (RF) and a local oscillator signal comprises a frequency divider and a heterodyne receive chain. The frequency divider is configured to divide the local oscillator signal and provide different divided local oscillator signals. The heterodyne receive chain comprises a first stage mixer and second stage mixers. The first stage mixer is configured to mix the multiband radio frequency signal and either the local oscillator signal or a divided local oscillator signal to generate a first intermediate frequency signal. Each second stage mixer is configured to mix the first intermediate signal and a divided local oscillator signal to generate second intermediate frequency signals that each represent a band from the multiband radio frequency signal. The frequency divider is configured to provide a different divided local oscillator signal to each of the second stage mixers.01-31-2013
20110182384RECEPTION CIRCUIT, INFORMATION PROCESSING DEVICE, AND BUFFER CONTROL METHOD - A reception circuit that receives data in serial communications through a plurality of lanes includes a plurality of buffers provided for each of the plurality of lanes that each stores data received through corresponding lane, a multilane control circuit that detects the skew between the lanes, and outputs an adjustment instruction for adjusting a read address of a buffer and a deskew information indicating that a skew adjustment between which buffer the lanes is to be performed based on the detected skew, and a plurality of address control circuits provided for each of the plurality of lanes that each transmits the adjustment instruction to a corresponding buffer when receiving the deskew information, wherein the buffer that has received the adjustment instruction adjusting its read address.07-28-2011
20110194650METHOD OF TRANSMITTING USING PHASE SHIFT-BASED PRECODING AND AN APPARATUS FOR IMPLEMENTING THE SAME IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting data using a plurality of subcarriers in a multi-antenna wireless communication system is disclosed. More specifically, the method includes receiving feedback information from a mobile station (MS), performing channel encoding and modulation independently on user data to be transmitted by each antenna using the received feedback information, determining a phase shift-based precoding matrix for increasing a phase angle of the user data by a fixed amount, and performing precoding using the determined phase shift-based precoding matrix on the user data.08-11-2011
20090122917DIGITAL BROADCASTING TRANSMISSION/RECEPTION SYSTEM HAVING IMPROVED RECEIVING PERFORMANCE AND SIGNAL PROCESSING METHOD THEREOF - A digital broadcasting transmission/reception system having improved receiving performance and signal processing method thereof. A digital broadcasting transmitter according to the present invention includes a data pre-processor which processed robust data and generates robust data packet of predetermined format, a TS stream generator which combines robust data packet with a normal data packet to generate a TS stream of a predetermined format, a randomizer which randomizes the TS stream output from the TS stream generator, a convolution encoder which performs convolution encoding with respect to the robust data of the data output from the randomizer, and a RS encoder which performs RS encoding with respect to the data output from the convolution g encoder. Accordingly, digital broadcasting receiving performance can be improved in a poor multipath channel, while maintaining compatibility with existing transmission/reception system.05-14-2009
20090122916DIGITAL BROADCASTING TRANSMISSION/RECEPTION SYSTEM HAVING IMPROVED RECEIVING PERFORMANCE AND SIGNAL PROCESSING METHOD THEREOF - A digital broadcasting transmission/reception system having improved receiving performance and signal processing method thereof. A digital broadcasting transmitter according to the present invention includes a data pre-processor which processed robust data and generates robust data packet of predetermined format, a TS stream generator which combines robust data packet with a normal data packet to generate a TS stream of a predetermined format, a randomizer which randomizes the TS stream output from the TS stream generator, a convolution encoder which performs convolution encoding with respect to the robust data of the data output from the randomizer, and a RS encoder which performs RS encoding with respect to the data output from the convolution g encoder. Accordingly, digital broadcasting receiving performance can be improved in a poor multipath channel, while maintaining compatibility with existing transmission/reception system.05-14-2009
20090122914DIGITAL BROADCASTING TRANSMISSION/RECEPTION SYSTEM HAVING IMPROVED RECEIVING PERFORMANCE AND SIGNAL PROCESSING METHOD THEREOF - A digital broadcasting transmission/reception system having improved receiving performance and signal processing method thereof. A digital broadcasting transmitter according to the present invention includes a data pre-processor which processed robust data and generates robust data packet of predetermined format, a TS stream generator which combines robust data packet with a normal data packet to generate a TS stream of a predetermined format, a randomizer which randomizes the TS stream output from the TS stream generator, a convolution encoder which performs convolution encoding with respect to the robust data of the data output from the randomizer, and a RS encoder which performs RS encoding with respect to the data output from the convolution g encoder. Accordingly, digital broadcasting receiving performance can be improved in a poor multipath channel, while maintaining compatibility with existing transmission/reception system.05-14-2009
20120177149DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA IN DIGITAL BROADCASTING SYSTEM - A method of processing a digital broadcast signal in a transmitter includes encoding signaling information including a transmission parameter channel, including transmission parameters and a fast information channel (FIC) including cross layer information for mobile service acquisition, and transmitting the broadcast signal including ensembles including the encoded signaling information. The FIC is divided into FIC segments, each FIC segment including a FIC segment header and a FIC segment payload. The FIC segment header includes type information indicating a type of the FIC segment, the FIC further including a first ensemble identifier identifying a specific ensemble including a service map table (SMT). The SMT includes a header including a second ensemble identifier corresponding to the first ensemble identifier, a payload including service acquisition information of the specific ensemble, and IP access information of a mobile service for acquiring an IP datagram of the mobile service from the specific ensemble.07-12-2012
20120177147METHODS OF RECEIVING MULTIPLE CARRIERS USING DIFFERENT RF MIXER FREQUENCIES AND RELATED COMMUNICATIONS DEVICES AND RECEIVERS - Methods may be provided to simultaneously receive first and second RF (radio frequency) carriers over respective first and second RF carrier frequencies. More particularly, the first and second RF carriers may be provided at an RF mixer stage. During a first time period, the first and second RF carriers may be down converted through the RF mixer stage using a first RF mixer frequency to generate first downconverted signals, and the first downconverted signals may be processed to provide first and second DC carriers corresponding to the first and second RF earners. During a second time period, the first and second RF carriers may be downconverted through the RF mixer stage using a second RF mixer frequency to generate second downconverted signals with the first and second RF mixer frequencies being different, and the second downconverted signals may be processed to provide the first and second DC carriers corresponding to the first and second RF carriers. Related devices are also discussed.07-12-2012
20100074370ANTENNA AMPLIFIER, RECEIVING SYSTEM, OPERATING METHOD, AND USE OF A RECEIVING SYSTEM - An antenna amplifier, receiving system, operating method, and use of a receiving system, is provided. The antenna amplifier includes a first signal input and a second signal input for connecting antennas, a first amplifier circuit connected to the first signal input and having a first digital control signal input for receiving a first digital control signal for setting an amplification of the first amplifier circuit and a first signal output, a second amplifier circuit connected to the second signal input and having a second digital control signal input for receiving a second digital control signal for setting an amplification of the second amplifier circuit and a second signal output, a summator connected to the first signal output and the second signal output for outputting a sum signal to a sum signal output, and a digital gain controller with a digital command signal input for receiving a digital command signal and a digital control signal output for outputting the first digital control signal and the second digital control signal.03-25-2010
20100074371Ultra narrow band frequency selectior for zero point modulated carrier - This invention claims a novel radio frequency receiver system for selecting a digitally modulated carrier frequency, and more specifically a Zero Point, amplitude Modulated (ZPM) carrier frequency. ZPM modulation does not create side-band frequencies, thus allowing individual carriers to be very closely spaced. Traditional methods of frequency selection utilize resonant tuning circuits in the antenna circuit and following amplifier circuits. Resonant tuning circuits are the assemblage of inductors and capacitors that are subject to parasitic oscillations, harmonic oscillations, as well as environmental effects. While modern technology has sufficiently overcome these detriments for traditional radio communication, ZPM theory desires to tune to a single frequency carrier with only one cycle of difference between carriers. Obvious to those skilled in the art, this requires a non-traditional method. For ZPM carriers, all signal-handling circuits must be non or insignificantly reactive and process the signal in linear fashion throughout the receiver signal path. This invention accomplishes the required functions by a unique combination of standard integrated circuits and circuit components.03-25-2010
20130077716ANTENNA COMBINING - Antenna combining is carried out when the number of antennas in a receiver is greater than the number of radio frequency, RF, chains. In such a case, a weighted sum of the signals detected at the antennas is presented to the or each RF chain. In a packet based communication, weights used to create the or each weighted sum, for a particular packet, are calculated based on channel estimates determined for preceding packets.03-28-2013
20130077715RECEIVER HAVING A SCALABLE INTERMEDIATE FREQUENCY - A technique includes using a receiver to process a radio frequency (RF) signal to downconvert spectral content from a first frequency band to a second frequency band to generate an intermediate frequency (IF) signal. The technique includes controlling a location of the second frequency band based at least in part on a selectable channel bandwidth of the receiver.03-28-2013
20130039445METHOD AND APPARATUS FOR DETERMINING ANALOG BEAM IN HYBRID BEAM-FORMING SYSTEM - A method and an apparatus determine an analog beam in a digital/analog hybrid beam-forming system. In a method of a reception end, for determining an analog beam in a hybrid beam-forming system, channel information regarding a transmission end is measured. At least one of an analog transmission beam-forming vector and a reception beam-forming vector is determined depending on the measured channel and a digital beam-forming technique in use. Information of the determined transmission beam-forming vector is fed back to the transmission end.02-14-2013
20130039444Radio Frequency Receiver with Dual Band Reception and Dual ADC - A radio frequency receiver with dual band reception and dual analog-to-digital converters (ADCs) can be configured to operate in a single channel mode or a dual channel mode to receive a single RF input channel or two RF input channels at the same or different frequency bands. In the single channel mode, the dual ADCs can be used to improve the performance of the receiver for the single input signal or the dual ADCs can be configured for reduced power consumption. In the dual channel mode, the dual ADCs operate on the individual RF input signals to realize dual band reception. In one embodiment, the receiver is configured for asymmetric dual band reception to receive a wideband input signal on a first input signal path and a narrow band input signal on a second input signal path.02-14-2013
20130039443SYSTEM AND METHOD FOR POWER REDUCTION IN REDUNDANT COMPONENTS - Various exemplary embodiments relate to a telecommunications system. The telecommunications system may include at least one actively operating component and at least one redundant component. The redundant component may include a first subcircuitry for receiving synchronization information and at least one second subcircuitry. The first subcircuitry may be activated independently of the second subcircuitry.02-14-2013
20100046671OFDM RECEIVER AND METHODS FOR OPERATING IN HIGH-THROUGHPUT AND INCREASED RANGE MODES - An OFDM receiver operates in a high-throughput mode or an increased-range mode. The receiver includes FFT circuitry to generate frequency domain symbol-modulated subcarriers for a set of OFDM subcarriers. During the increased-range mode, data is received on a single subchannel and the FFT circuitry generates frequency domain symbol-modulated subcarriers for a set of OFDM subcarriers associated with the single subchannel. During the high-throughput mode, data is received on each subchannel of a plurality of subchannels and the FFT circuitry generates frequency domain symbol-modulated subcarriers for a different one of the subchannels. The OFDM receiver may operate in accordance with one of the IEEE 802.11 standards.02-25-2010
20130034191RECEIVER AND SIGNAL RECEIVED POWER ESTIMATION METHOD - In the case of a narrow band in which the number of sub-carriers to be used for the concurrent transmission is smaller than a predetermined value, an RSRP estimation unit carries out processes in an order of time-wise in-phase addition, frequency-wise averaging, and conjugate multiplication, with respect to the channel estimation values estimated by the channel estimation unit; and in the case of a wide band in which the number of sub-carriers to be used for the concurrent transmission is greater than the predetermined value, the RSRP estimation unit carries out processes in an order of frequency-wise averaging, conjugate multiplication, and time-wise in-phase addition, with respect to the channel estimation values estimated by the channel estimation unit.02-07-2013
20130034190WIRELESS RECEIVER - Wireless receiver for receiving a plurality of co-existing wireless signals respectively from different positioning systems, includes an analog frontend and an analog-to-digital converting unit. The analog frontend is arranged to convert bands of the co-existing wireless signals into a plurality of corresponding intermediate bands by a local frequency and to provide an intermediate signal including the intermediate bands. The analog-to-digital converting unit is coupled to the analog frontend, and is arranged to convert the intermediate signal to a digital signal, wherein an operation band of the analog-to-digital converting unit covers the plurality of intermediate bands.02-07-2013
20130034192RECEIVING METHOD AND APPARATUS, AND COMMUNICATION SYSTEM USING THE SAME - A radio unit receives burst signals in a target system or those in a MIMO system. A judgment unit determines if a MIMO signal having a form of channel corresponding to the target system is assigned posterior to a target LTS and a target signal. If a constellation of signal points in a position posterior to the target LTS and target signal corresponds to a constellation of signal points in a MIMO signal, the judgment unit judges that the MIMO signal is assigned in the received burst signal. If it is judged by the judgment unit that the MIMO signal was assigned, an instruction unit stops the operation of a baseband processing unit for MIMO-STS and the like assigned posterior to the MIMO signal.02-07-2013
20090135953Receiving circuit - A receiving circuit includes a frame memory to store received data of one frame, a de-rate matching circuit to generate data before encoding by reading the received data from the frame memory and performing de-rate matching in a reverse manner to rate matching performed on the received data at a transmitting end, and a TTI memory to store the data before encoding.05-28-2009
20130028351DISCRETE DIGITAL RECEIVER WITH SAMPLE MEMORY - A receiver includes a sample and hold module, sample memory, a discrete time filter module, and a conversion module. The sample and hold module is operable to sample and hold an inbound wireless signal to produce a frequency domain sample pulse train. The sample memory is operable to store sample pulses of the frequency domain sample pulse train to produce a stored sample pulse train. The discrete time filter module is operable to filter the stored sample pulse train to produce a filtered sample pulse. The conversion module is operable to convert the filtered sample pulse into an inbound baseband signal.01-31-2013
20130083868COMBINED COMPLEX REAL MODE DELTA-SIGMA ADC - A delta-sigma analog-to-digital converter (ADC) is disclosed. In one embodiment, the delta-sigma ADC includes a dual mode resonator and a plurality of switches. The delta-sigma ADC is configured to operate in a real modulation mode or a complex modulation mode based on settings of the plurality of switches.04-04-2013
20130089166DIGITAL BROADCAST RECORDING AND REPRODUCING APPARATUS AND DIGITAL BROADCAST RECORDING AND REPRODUCING METHOD - According to one embodiment, a digital broadcast recording and reproducing apparatus includes: a receiver configured to receive broadcasting data that contains broadcasting content and address information indicating a source of reproduction control information related to reproduction control of the broadcasting content; a storage configured to store therein the broadcasting data received by the receiver; an acquisition module configured to acquire the reproduction control information from the source indicated by the address information when the broadcasting content in the broadcasting data stored in the storage is reproduced; and a reproducer configured to reproduce the broadcasting content in accordance with the reproduction control information acquired by the acquisition module.04-11-2013
20130089167TERMINAL COMPRISING MULTI-ANTENNAS AND METHOD OF PROCESSING RECEIVED FREQUENCY - A wireless communication terminal according to the embodiment includes a communication module including a circuit board having a plurality of pins; a shield case antenna overlapping with one side of the circuit board, electrically connected to a part of the pins and including a signal receiving unit; and a signal processing unit for processing the received signals. An antenna matching unit for matching impedance between the signal processing unit and an antenna unit, a phase shifter for controlling a phase of the received signal and an amplitude regulator for adjusting amplitude of the received signal are provided between the signal processing unit and the antenna unit.04-11-2013
20130051495INTERACTIVE DIGITAL DUTY CYCLE COMPENSATION CIRCUIT FOR RECEIVER - A receiver circuit. A receiving stage is coupled to a first supply voltage and an input signal, and operative to generate a first intermediate signal from the input signal based on the first supply voltage. A compensation stage is coupled to a second supply voltage and the first intermediate signal, and operative to generate a second intermediate signal by adjusting duty cycle of the first intermediate signal upon detecting changes in the first supply voltage to compensate for the changes in the first supply voltage. An outputting stage is coupled to the second supply voltage and operative to generate an output signal based on the second supply voltage upon receiving the second intermediate signal. A voltage of the output signal is adjusted to a level of the second supply voltage and the output signal has a 50% duty cycle.02-28-2013
20090304111Decoding Device and Method - A decoding device and method for decoding an LDPC code with high accuracy while suppressing an increase of the scale of a device. A check node calculator (12-10-2009
20120219094Operation of User Equipment When Control and Data Information are Supplied by Different Radio Units - A receiver operates in a mobile communication system that comprises first node and second nodes, the first and second nodes transmitting common control signals and dedicated data signals, respectively. The receiver determines a first timing rotation and/or a first frequency rotation of the common control signals and a second timing rotation and/or a second frequency rotation of the dedicated data signals. The receiver determines a first and/or second difference, wherein the first difference is a difference between the first timing rotation of the common control signals and the second timing rotation of the dedicated data signals and the second difference is a difference between the first frequency rotation of the common control signals and the second frequency rotation of the dedicated data signals. An adapted timing of dedicated data signals is produced based on the first and/or second differences, and the adapted timing is used to receive dedicated data signals.08-30-2012
20090041158DIGITAL DEMODULATING APPARATUS, DIGITAL RECEIVER, CONTROLLING METHOD OF THE APPARATUS, COMPUTER PROGRAM PRODUCT, AND RECORDING MEDIUM RECORDING THEREON THE PRODUCT - A digital demodulating apparatus comprises circuit components constituting a tuner that applies channel select processing to a received signal, and a demodulator that demodulates the signal to which the tuner has applied channel select processing; a power supply unit that supplies power to each circuit component; a reception condition detecting unit that detects a reception condition when the tuner receives the signal; a power adjusting unit that adjusts the power to be supplied to each circuit component by the power supply unit, on the basis of a result of the detection by the reception condition detecting unit; a fading environment estimating unit that estimates a fading environment when the tuner receives the signal; and a power controlling unit that controls the power adjusting unit on the basis of a result of the estimation by the fading environment estimating unit so that the number of times of adjustments of the power by the power adjusting unit per unit time changes in accordance with the variability of the reception condition.02-12-2009
20130070873SIGNAL ENCODING APPARATUS AND METHOD, SIGNAL DECODING APPARATUS AND METHOD, PROGRAMS AND RECORDING MEDIUMS - A signal decoding method including the steps of: (a) de-multiplexing compressed data in an input signal and generating encoded data for at least one low frequency sub-band signal and information characterizing at least one high frequency sub-band signal; (b) decoding the encoded data and generating a low frequency sub-band signal; (c) generating at least one high frequency band signal using the low frequency sub-band signal and at least one item of the information characterizing the at least one high frequency sub-band signal; (d) adjusting a gain of the at least one high frequency band signal using the at least one item of information characterizing the at least one high frequency sub-band signal; and (e) generating a time series signal by combining the low frequency sub-band signal and the at least one high frequency sub-band signal03-21-2013
20110058630METHOD AND ARRANGEMENT IN WIRELESS COMMUNICATION NETWORKS USING RELAYING - A wireless communication system with relaying to enhance performance provides artificial frequency selectivity and spatial diversity by introducing delay diversity. A OFDM chunk is subjected to a 2D cyclic prefix by pre-appending to a representation of the chunk the last column of the representation. The last row of the pre-appended chunk is copied to the top of the augmented chunk forming an augmented chunk.03-10-2011
20130058436APPARATUS AND METHOD FOR PROCESSING A SIGNAL - A signal processing apparatus stores previously determined function values using parameters through a processing unit, and outputs the stored function data using subsequently input data as an address.03-07-2013
20130058437ANALOG-TO-DIGITAL CONVERTER AND WIRELESS RECEIVER - The influence of a jitter of a sampling clock of an analog-to-digital converter is digitally corrected at low power consumption.03-07-2013
20130058438Digital Compensation Technique Using Area Efficient Tri-state Architecture - An integrated circuit device can include a radio-frequency device and a hard-wired lookup table. The radio-frequency device can have an analog input, a digital control input, and an analog output. An unadjusted transfer response of the analog output relative to the analog input and the digital control input can differ from an ideal transfer response. The hard-wired lookup table can be connected to the digital control input of the radio-frequency device to generate a modified digital control input based on a predetermined function. This can have the effect that the adjusted transfer response of the analog output relative to the analog input and the modified digital control input is closer to the ideal transfer response than the unadjusted transfer response of the analog output relative to the analog input and the digital control input. The predetermined function can be defined by metallization connections within the integrated circuit device.03-07-2013
20110013727Diversity Reception - A receiver for receiving signals of a protocol in which traffic data is redundantly modulated onto both of two carriers according to a predetermined decision scheme, the receiver comprising: an input for receiving signals on the two carriers; a demodulator for demodulating the signals received on each of the two carriers to form two respective received data streams; first transformation logic for generating a first candidate set of traffic data by processing the received data streams by the functional inverse of the predetermined decision scheme; second transformation logic for generating a second candidate set of traffic data by aggregating corresponding bits of each of the received data streams; and a traffic data set selector for selecting data from either the first candidate set of traffic data or from the second candidate set of traffic data for further processing, the traffic data set selector being configured to make that selection in dependence on the relative strength with which signals on the two carriers are received.01-20-2011
20110064163Methods and Apparatuses for Channel Estimation of OFDM Systems to Combat Multipath Fading - Methods for channel estimation for OFDM schemes are provided to combat multipath fading. Scattered pilot symbols are adaptively tracked by applying a weighted summation function over the received symbols to get a “snapshot” of the pilot symbols. Channel impulse response and frequency response can then be applied to the snapshot for channel estimation. The channel estimation is then used for interpolating one or more data symbols. Furthermore, the path information of the channel impulse response can help to optimize the OFDM window position.03-17-2011
20090268848Systems and Methods for Filter Based Media Defect Detection - Various embodiments of the present invention provide systems and methods for media defect detection. For example, a data receiving system is disclosed that includes a data signal provided from a medium that may include a defective portion. An absolute value circuit receives the data signal and provides an output corresponding to an absolute value of the data signal. The output corresponding to the absolute value of the data signal is input to a filter that filters it and provides a filtered output. In some cases, the filter is a digital filter operable to integrate the absolute value of the data signal. A comparator receives the output from the filter and compares it with a threshold value. The result of the comparison indicates a defect status of the medium.10-29-2009
20120224656SIGNAL WIRING SYSTEM AND JITTER SUPPRESSION CIRCUIT - Reducing jitter in signal wiring without requiring a larger circuit scale is difficult in the technology of the related art. A signal wiring system to resolve the above problem therefore includes an output unit to output a differential signal, a receiver unit to receive differential signals from the output unit, a jitter suppression circuit to suppress the amount of the jitter in the differential signal received by the receiver unit according to a suppression coefficient, and a signal wiring unit for conveying a differential signal from the output unit and including a wiring length set according to a suppression coefficient in the jitter suppression circuit.09-06-2012
20130064326SERIAL LINK RECEIVER FOR HANDLING HIGH SPEED TRANSMISSIONS - A serial link receiver comprises first and second input terminals for receiving positive and negative inputs of a serial data signal, first and second broadband matching T-coils coupled to the first and second input terminals, first and second AC/DC coupling networks coupled to the first and second broadband matching T-coils, and a common mode level shifter coupled to the outputs from the first and second AC/DC coupling networks. This receiver architecture combines the ability to have a wide bandwidth input and pass through data signals at both low and high frequencies. This AC and DC coupled front end also incorporates the feature of a common mode level shifting network to place the common mode of the signal at the optimum point for the first active amplifier stage.03-14-2013
20120114078Method, System and Apparatus for Balanced Frequency Up-Conversion of a Baseband Signal - A balanced transmitter up-converts a baseband signal directly from baseband-to-RF. The up-conversion process is sufficiently linear that no IF processing is required, even in communications applications that have stringent requirements on spectral growth. In operation, the balanced modulator sub-harmonically samples the baseband signal in a balanced and differential manner, resulting in harmonically rich signal. The harmonically rich signal contains multiple harmonic images that repeat at multiples of the sampling frequency, where each harmonic contains the necessary information to reconstruct the baseband signal. The differential sampling is performed according to a first and second control signals that are phase shifted with respect to each other. In embodiments of the invention, the control signals have pulse widths (or apertures) that operate to improve energy transfer to a desired harmonic in the harmonically rich signal. A bandpass filter can then be utilized to select the desired harmonic of interest from the harmonically rich signal. The sampling modules that perform the sampling can be configured in either a series or a shunt configuration. In embodiments of the invention, DC offset voltages are minimized between the sampling modules to minimize or prevent carrier insertion into the harmonic images.05-10-2012
20120114077VARIABLE DYNAMIC RANGE RECEIVER - Embodiments of the present invention may provide a signal processing circuit that may comprises an analog-to-digital converter (ADC), and an output restriction circuit. The output restriction circuit may reduce the accuracy of the digital output of the ADC when signal content exceeds a pre-determined spectrum mask in an undesirable band. In one embodiment, the input signal spectrum may be actively monitored and when the input spectrum is inconsistent with an intended application, the output resolution may be restricted, for example, by truncating least significant bits (LSBs) of the digital output or adding digital noise.05-10-2012
20130163698LOW COMPLEX AND ROBUST DELAY ESTIMATION - A method and apparatus for finding an estimate of the delay of a signal travelling between two points. A quantity is evaluated from the signal at a final number of time instants, at both a reference point and a reception point. The values are quantized by comparison with a threshold adapted to a typical magnitude of the quantity. If the quantized values from the reception point are shifted back by the true delay with respect to the quantized values from the reference point, then certain co-occurrences of quantized values have very low probability. Hence, the best delay estimate is that shift which yields the least number of low-probability co-occurrences.06-27-2013
20130163699DIGITAL FRONT END RECEIVER USING DC OFFSET COMPENSATION SCHEME - The present invention relates to a digital front end receiver using a DC offset compensation scheme. The digital front end receiver includes a DC offset compensation filter configured to remove DC offset components from signals received from a digital mixer and a Cascaded Integrator-Comb (CIC) decimation filter configured to reduce a sampling rate of the signals received from the DC offset compensation block.06-27-2013
20120269296MULTI-STAGE RECEIVER - A multi-stage receiver comprises an input stage, an intermediate stage, and an output stage. The input stage is configured to provide a first signal and a second signal. The intermediate stage is coupled to the input stage and comprises a first amplifying circuit and a second amplifying circuit. Positive and negative input terminals of the first amplifying circuit receive the first signal and the second signal, respectively. Positive and negative input terminals of the second amplifying circuit receive the second signal and the first signal, respectively. The output stage is coupled to the intermediate stage and configured to generate low-skewed differential signals according to output signals of the intermediate stage.10-25-2012
20120195396STACKED DIGITAL/RF SYSTEM-ON-CHIP WITH INTEGRAL ISOLATION LAYER - An apparatus includes a device package, a first Integrated Circuit (IC) that is packaged in the device package, and a second IC, which is packaged in the device package and is fabricated on a multi-layer interconnection circuit including a plurality of interconnection layers for interconnecting components of the second IC, wherein a selected layer in the plurality is configured to serve as a conductive shield for reducing interference between the first and second ICs.08-02-2012
20080292020Reconfigurable Pulse Detector in Wireless Communications System - In a receiver architecture, for example for use in receiving pulses in an Ultra Wideband system, a received signal is applied to a mixer, together with pulses which correspond to expected received pulses. The mixer output is applied to a block, which can be configured either as an integrator or as a filter. When no pulses are being received, this block is configured as a filter, allowing it to lock quickly to any new sequence of pulses, while, when the system has locked to a sequence of pulses, the block is configured as an integrator, so that an improved signal-noise ratio can be achieved.11-27-2008
20100177850ELECTRONIC DEVICE - An electronic device satisfies: f07-15-2010
20110158351METHOD AND APPARATUS FOR COMMUNICATING ANTENNA PORT ASSIGNMENTS - A method, an apparatus, and a computer program product for wireless communication are provided in which downlink control information (DCI) including a total number of available antenna ports, a rank indicator for a user equipment (UE), and one or more port assignment bits is received, a subset of the total number of available antenna ports that are assigned to the UE based on at least one of: the rank indicator or the one or more port assignment bits is determined, and demodulation based on reference signals corresponding to the set of assigned antenna ports is performed.06-30-2011
20100034317Digital Antenna - A radio system for a motor vehicle includes a digital antenna coupled by a digital link to a base unit. The digital antenna includes an antenna and a programmable radio tuner coupled to the antenna located exterior of the vehicle, and a first network interface coupled to the radio tuner. The radio tuner selectively tunes to a radio frequency (RF) and convert a RF signal to a baseband signal. The first network interface transmits the baseband signal over the digital link to the base unit.02-11-2010
20110280342MIMO TRANSMISSION WITH RANK-DEPENDENT PRECODING - Techniques for performing rank-dependent precoding for a MIMO transmission are described. Each rank may be associated with a set of at least one precoding vector or matrix that can provide good performance for that rank. A transmitter may obtain a precoding vector for a rank-1 transmission from a first set containing at least one column vector of a unitary matrix, e.g., a Fourier matrix. The transmitter may perform precoding for the rank-1 transmission based on the precoding vector. The transmitter may obtain a precoding matrix for a rank-2 transmission from a second set containing an identity matrix. The transmitter may perform precoding for the rank-2 transmission based on the precoding matrix. For the rank-2 transmission, the transmitter may select the identity matrix as the precoding matrix if a MIMO channel resembles a diagonal channel (which may be determined based on antenna configurations) and may select the unitary matrix otherwise.11-17-2011
20080279309Multi-Band DMT Receiver - There is disclosed a receiver for receiving a multi-band DMT signal. The receiver includes a plurality of demodulators, each demodulator having a discrete Fourier transform and being provided to demodulate a respective one of a plurality of bands in the multi-band signal, the multi-band signal being modulated in an inverse discrete Fourier transform. A method of demodulating a multi-band signal is also provided.11-13-2008
20120236968ENHANCED LATTICE REDUCTION SYSTEMS AND METHODS - An exemplary embodiment of the present invention provides a lattice reduction method comprising obtaining a preliminary estimate of a transformation matrix, generating a covariance matrix based on the preliminary estimate of the transformation matrix, reducing diagonal elements of the covariance matrix to generate a unimodular transformation matrix, and using the unimodular transformation matrix to obtain an estimate of an input.09-20-2012
20110142170Signal Receiver and Method for Estimating Residual Doppler Frequencies of Signals Thereof - The invention provides a signal receiver. The signal receiver comprises a carrier removal module, a Fast Fourier Transformation (FFT) module, and a signal processor. The carrier removal module generates a carrier signal with a frequency of an estimated carrier frequency, generates at least one delta carrier signal with a frequency of the carrier frequency plus a delta frequency, removes the carrier signal from a first signal to obtain a second signal, and removes the delta carrier signal from the first signal to obtain a third signal. The FFT module derives a series of first FFT values from the second signal, and derives a series of second FFT values from the third signal. The signal processor estimates the carrier frequency of the second signal to obtain the estimated carrier frequency, determines the delta frequency for the carrier removal module, estimates a residual Doppler frequency of the second signal according to both the first FFT values and the second FFT values, and adjusts the estimated carrier frequency according to the residual Doppler frequency.06-16-2011
20120288032METHODS AND DEVICES FOR RECEIPT OF IMBALANCED TRANSMISSION SIGNAL - Communication systems may benefit from an HSPA MIMO receiver configured for receipt of an imbalanced transmit signal, as well as a method for operating the receiver. According to certain embodiments, a method can include receiving a multiple-input multiple-output system communication signal comprising at least one primary signal at a first power level from a first antenna and a secondary signal at a second power level different from the first power level from a second antenna. The method can also include estimating at least one parameter of the communication signal. The method can further include applying the at least one parameter as estimated to calculate linear minimum mean square error coefficients. The method can additionally include applying the linear minimum mean square error coefficients to process the communication signal.11-15-2012
20120288031Providing Signaling Information in an Electronic Service Guide - Apparatuses may perform and methods may include: receiving a digital broadcast signal that includes an Electronic Service Guide (ESG); extracting and assembling the ESG; extracting from the ESG signaling information which links one or more services in an upper level layer of a broadcast protocol to a physical layer of the broadcast protocol. Based on the signaling information, one or more services from a broadcast system may be accesses.11-15-2012
20120002757PROCEDURE FOR THE REMOVAL OF THE DC COMPONENT INHERENT IN ANY RADIO FREQUENCY CHAIN - The invention offers a procedure for compensating the DC component inherent in any radio frequency chain making it possible from a single measurement, generally located in the digital stage, to determine a set of multiple compensation values that must be applied to multiple compensation points of the analogue chain. The compensation values are calculated by an iterative process converging towards a cancellation of the DC component and avoid saturating amplification components and components of the analogue digital converter.01-05-2012
20110293042COMBINING PILOT-SYMBOL-BASED PHASE ESTIMATION WITH DATA-SYMBOL-BASED PHASE ESTIMATION - A method for a receiver to estimate phase of a carrier wave, including receiving a carrier wave carrying pilot symbols and data symbols extending between the pilot symbols, determining phase of the carrier wave at received pilot symbols, and interpolating the phase of the carrier wave at points between pilot symbols based, at least in part, on an estimated phase of demodulated data symbols. Apparatus for estimate phase of a carrier wave, including a unit for determining phase of the carrier wave at received pilot symbols, and a unit for interpolating the phase of the carrier wave at points between pilot symbols based, at least in part, on an estimated phase of demodulated data symbols. Related apparatus and methods are also described.12-01-2011
20110293041Receiver Resistor Network for Common-Mode Signaling - A receiver circuit to receive signals from first and second pairs of transmission lines includes first and second interfaces, each with first and second input nodes to receive respective signals. The receiver circuit also includes a resistor network with first, second, third, and fourth resistive elements. The first and second resistive elements are each connected between the input nodes of a respective interface. The third and fourth resistive elements each include a pair of resistors connected in series between the input nodes of a respective interface, and an intermediate node between the resistors. The intermediate nodes are connected to an AC ground. The receiver circuit further includes a differential amplifier with first and second inputs coupled respectively to the first and second interfaces and an output to provide a signal derived from common mode components of the signals received at the input nodes.12-01-2011
20110293040METHOD AND APPARATUS FOR SIGNAL ACQUISITION IN OFDM RECEIVERS - A method and apparatus for signal acquisition in an OFDM receiver relies on a preamble training sequence to synchronize the receiver in time (e.g. determining the start of a frame) and in frequency (carrier frequency offset compensation). The preamble training sequence has a periodic structure and the method and apparatus perform a cross-correlation technique using a matched filter to achieve time synchronization and/or frequency synchronization and/or channel estimation, the latter being especially useful in multi-antenna receivers for diversity combining purposes. Many advantages derive from performing at least two and preferably all three operations jointly, in terms of latency, hardware complexity, and length of training sequence required to achieve satisfactory convergence on all counts. The periodicity of the training sequence is exploited to reduce considerably the main filter complexity and optionally dynamically adjust carrier offset compensation throughout the filtering process, thus improving the quality of all final estimates (carrier frequency offset, time synchronization, and channel).12-01-2011
20090103653State metrics memory reduction in a turbo decoder implementation - Methods and apparatus are described for reducing memory storage cells in a turbo decoder by storing only half the state metrics generated during a scan process. States associated with each bit transmission may be divided into couples and only one state from every state couple may be stored. In one example embodiment, only the state metric for a losing state of every state couple is saved, along with a single bit, e.g., 1 or 0, indicating whether the upper state or lower state of the state couple was the winner. The winning state may be reconstituted at a later stage. In this manner, for a code rate ⅓ and constraint length 3 turbo code, instead of storing 8*10=80 bits of state metrics for each systematic bit, only (4*10)+(4*1)=44 bits of scan state metrics data need be stored, a savings of nearly 50% regardless of the transistor technology used.04-23-2009
20110286551WIDEBAND DIGITAL RECEIVER COMPRISING A SIGNAL DETECTION MECHANISM - A wideband microwave digital receiver comprises an antenna, an amplifier, and a digital IFM device for measuring the frequency of the received signal or signals. A consistency indicator indicates the consistency of the frequency measurements and is calculated by analyzing the values taken by said measurements obtained over two consecutive transforms. The presence of signal pulses at the input of the receiver is detected when said indicator signals the consistency of at least one frequency measurement.11-24-2011
20100002806APPARATUS FOR RECEIVING SIGNALS IN OFDM COMMUNICATION SYSTEM HAVING MULTIPLE ANTENNAS AND METHOD THEREOF - Provided are an apparatus for receiving signals in an OFDM communication system using multiple transmission/reception antennas and a method thereof. The method includes modulating a predetermined part of a data stream based on a multi-dimensional reception procedure to generate a first modulated data stream; regenerating a symbol corresponding to the modulated data stream; eliminating the regenerated symbol from a remained data stream; modulating the eliminated data stream to generate a second modulated data stream; and outputting an output signal obtained by serializing the first modulated data stream and the second modulated data stream.01-07-2010
20100027716AUTONOMOUS CONTROL UNIT AND RECEIVER USING THE SAME - An autonomous control unit includes an input stage register section, a computation section, and an output stage register section. The input stage register section includes plural input stage registers, and acquires, at a first timing, data indicating a given reception status of an incoming signal. The computation section performs comparison computation with respect to the data acquired by the input stage register section, performs logic processing of a set number of cycles of sequential control on the comparison computation result, and derives a logic processing result. The output stage register section includes at least one output stage register, and outputs a control value from the logic processing result at a second timing.02-04-2010
20090067547METHOD AND APPARATUS FOR PROCESSING SELECTDINTERPLACE OPERATION IN OPEN STATE IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for processing SelectedInterlace operation in open state in a wireless communication system is described. It is determined if a SelectedInterlaceResponse message with SelectedInterlaceEnabled set to ‘1’ is sent. A SelectedInterlaceOn mode is entered. A shared signaling channel (SSCH) block is sent to an access terminal on a set of interlaces. It is determined if a SelectedInterlaceAckRequest message with the SelectedInterlacesEnabled field equal to ‘0’ is received.03-12-2009
20090067545Receiver of high speed digital interface - A receiver of a high speed digital interface includes at least one differential amplifier, a pair of resistive elements, a current source and a pair of transistors. The differential amplifier receives a small differential signal at a pair of input terminals and outputs an amplified differential signal. Each of the resistive elements has one end coupled to one of the input terminals of the differential amplifier and the other end receiving a reference voltage. The pair of transistors has drains respectively coupled to the input terminals of the differential amplifier, sources commonly coupled to the current source and gates receiving a differential feedback signal derived from the amplified differential signal.03-12-2009
20090147884TRANSCEIVER DEVELOPMENT IN VHF/UHF/GSM/GPS/BLUETOOTH/CORDLESS TELEPHONES - A digital communication circuit can be implemented can be implemented in a CMOS, or other IC structure. The digital circuit can utilize negative frequency removers or image frequency removers in the digital domain. The circuit can include mixers, switches, a complex filter, a low noise amplifier and summers. The image frequency can be removed digitally.06-11-2009
20110261905COMPRESSED SENSING CHANNEL ESTIMATION IN OFDM COMMUNICATION SYSTEMS - Methods and devices for receiving Orthogonal Frequency Domain Multiplexed (OFDM) wireless signals employ compressed sensing-based estimation techniques, exploiting the common sparseness of the wireless channel, to achieve signal reception in the presence of significant Doppler spread. When implemented for an ISDB-T mobile TV standard signal, the compressed sensing channel estimation algorithm enables data reception in Doppler spread conditions beyond the capabilities of conventional channel estimation methods.10-27-2011
20100040173OFDM SIGNAL RECEIVER AND METHOD FOR RECEIVING OFDM SIGNAL - A Tu delay section (02-18-2010
20080267320Communication device and channel estimation method - A communication apparatus and a channel estimating method for performing channel estimations with high precision. The communication apparatus, which receives multicarrier signals comprising a plurality of subcarriers, has a first estimating unit that generates temporary channel estimation values from pilot signals located in any ones of a plurality of received subcarriers; a second estimating unit that generates a virtual channel estimation value sequence related to the frequency bands other than the frequency bands of the plurality of subcarriers and that combines the generated virtual channel estimation value sequence with the plurality of temporary channel estimation values to generate a channel estimation value sequence corresponding to a predetermined frequency bandwidth; and a generating unit that uses this generated channel estimation value sequence to generate channel estimation values related to any ones of the plurality of subcarriers.10-30-2008
20110150141COMPUTATIONAL GENERATION OF NARROW-BANDWIDTH DIGITAL SIGNALS - A signal shaper generates an output signal representing a binary sequence, the output signal being the time-dependence of a signal value F. The signal shaper is input a first signal value F06-23-2011
20110150136DUTY CYCLE COMPENSATING DIGITAL DATA RECEIVER - A data communication receiver includes an interface operable to receive at least one incoming data signal. A transition point tracker is operable to track data transition points of the data signal, and a data sampler is operable to sample the data signal at a desired sampling point between transition points.06-23-2011
20100124299METHOD FOR MIMO DECODING, APPARATUS FOR MIMO DECODING, AND MIMO RECEIVER - There is provided a method for MIMO decoding, based on a channel estimated value between a plurality of transmitting antennas and a plurality of receiving antennas, a received signal received by the plurality of receiving antennas, including: in obtaining a unitary matrix Q and a triangular matrix R through QR decomposition of a channel estimated value matrix H, creating the triangular matrix R such that a sum of scalars of non-diagonal elements of the triangular matrix R is the minimum; and estimating a signal transmitted from the plurality of transmitting antennas through the use of the created triangular matrix R, the unitary matrix Q, and the received signal received by the plurality of receiving antennas.05-20-2010
20090285333RECEIVING CIRCUIT - A receiving circuit includes a positive-side level judgment circuit, a negative-side level judgment circuit, and a gate circuit, and is configured to receive input of an AMI-coded signal, convert the signal to a binary output signal, and output the same. The positive-side level judgment circuit judges whether the voltage of an input signal is greater or less than a threshold on the positive side. The threshold on the positive side is provided with a hysteresis characteristic by a positive feedback. The negative-side level judgment circuit judges whether the voltage of an input signal is greater or less than a threshold on the negative side. The threshold on the negative side is provided with a hysteresis characteristic by a positive feedback loop. The gate circuit logically combines the outputs of the positive-side and negative-side level judgment circuits so as to generate the output signal.11-19-2009
20100128817WIRELESS RECEIVER AND METHOD OF SAVING POWER - A receiver (05-27-2010
20090310714METHOD AND APPARATUS FOR CHANNEL ESTIMATION - The invention relates to DVB-T system, and in particular, to a channel estimation method for OFDM symbols. A plurality of symbols are received to generate a pilot response. A finite impulse response is generated from the pilot response. A coefficient table is selected based on the characteristics of the finite impulse response. The channel is estimated by interpolating the pilot response based on the coefficient table.12-17-2009
20090310713RECEIVING APPARATUS, RECEIVING METHOD, AND PROGRAM - The present invention provides a receiving apparatus including: a capturing section configured to correct an error of a receive signal and capture the receive signal; a filtering section configured to remove a low frequency component of a signal indicative of an integrated value of an error of the receive signal; and a capture detecting section configured to monitor a signal outputted from the filtering section and, if the signal is within a predetermined range for a predetermined time, detect that the capturing section has captured the receive signal.12-17-2009
20120033763Method and Apparatus for Channel Response Calculation in an OFDM Receiver - An efficient algorithm is described for use with OFDM receivers that characterizes the impulse response of a communication channel using frequency domain techniques that reduce computational and memory requirements, relative to time-domain cross-correlation methods, without sacrificing algorithm performance. An FFT engine is used to transform a time domain input sequence, the transformed sequence is multiplied by the conjugate of the expected sequence, the product of several sequences is averaged, then the FFT engine transforms the average back to a time domain sequence, the magnitude of which is the impulse response of the channel.02-09-2012
20100195766TRANSMITTING/RECEIVING SYSTEM AND METHOD OF PROCESSING DATA IN THE TRANSMITTING/RECEIVING SYSTEM - A transmitting/receiving system and a data processing method of the same are disclosed herein. The receiving system may include a receiving unit, a first processing unit, and a second processing unit. The receiving unit receives a broadcast signal including mobile service data and an FIC segment from at least one slot. The first processing unit acquires FIC segments from the broadcast signal and obtains an FIC chunk, wherein the obtained FIC chunk is configured of a chunk header and a chunk payload. Herein, the chunk header may include FIC chunk major protocol version information and FIC chunk minor protocol version information, and the chunk payload may include signaling information between at least one ensemble and at least one mobile service. The second processing unit processes the FIC chunk based upon the FIC chunk major protocol version information and the FIC chunk minor protocol version information.08-05-2010
20100195767DYNAMIC CURRENT STEERING MIXER - A dynamic current steering mixer. The dynamic current steering mixer comprises a Gilbert cell mixer core, a pair of load devices, a dynamic current steering cell, and a transconductor cell. The Gilbert cell mixer core has first and second nodes, receives a first differential input signal, and provides a differential output signal at the first nodes thereof. The load devices are respectively coupled between the first nodes of the Gilbert cell mixer core and a first fixed voltage. The dynamic current steering cell has third nodes coupled to the second nodes and fourth nodes. The transconductor cell is coupled between the fourth nodes and a second fixed voltage and receives a second differential input signal. The dynamic current steering cell alternately steers current of the transconductor cell to or away from the Gilbert cell mixer core.08-05-2010
20110268228RECEIVING DEVICE - A receiving device includes a case body having an insertion slot of a contact IC card formed in the case body, a tuner arranged in the case body to receive a digital broadcasting signal, and a digital circuit board arranged in the case body to accommodate the tuner mounted on the digital circuit board. In the receiving device, the digital circuit board is arranged to include a debugging circuit pattern formed in a predetermined area at an end portion of the digital circuit board, the debugging circuit pattern being arranged to connect an integrated circuit mounted on the digital circuit board to a debugging circuit for debugging of the integrated circuit.11-03-2011
20090052581DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA IN DIGITAL BROADCASTING SYSTEM - A digital broadcasting system and a data processing method are disclosed. A receiving system of the digital broadcasting system includes a baseband processor, a management processor, and a presentation processor. The baseband processor receives broadcast signals including mobile service data and main service data. Herein, the mobile service data may configure a RS frame, which includes mobile service data and table information describing channel configuration information and IP access information of an ensemble level corresponding to the RS frame. The table information is encapsulated to a UDP/IP header. The management processor processes table information from the RS frame to acquire channel configuration information and IP access information of an ensemble level, and accesses mobile service data requested to be received from the RS frame, based upon the acquired information. The presentation processor decodes the accessed mobile service data and outputs the decoded data to a display screen and/or a speaker.02-26-2009
20090168922METHODS AND SYSTEMS FOR PDCCH BLIND DECODING IN MOBILE COMMUNICATIONS - Various methods and systems for efficiently performing the blind decoding of downlink signals is described. Several forms of arranging possible CCE combinations are examined and investigated. Based on PDCCH size estimation/information, CCE concatenations that are most likely (of limited sets) can be arrived at. Tree-based concatenations are also devised using largest CCE ordering to align smaller CCE sizes to similar boundaries. By such ordering, the search space for all possible CCE ordering and sizes can be reduced to an efficient tree. Set mapping between possible lnposelstartCCElnposelend/REs are also described using a first set to secondary and tertiary sets. Various other ordering and sorting schemes are also detailed that enable a blind decode of a PDCCH channel to be efficiently performed.07-02-2009
20110200144Apparatus and Method for Antenna Diversity Reception - An apparatus provides a baseband signal for exploiting receive antenna diversity by means of a digital baseband processor. The apparatus includes a combiner configured to temporally delay a first received signal corresponding to a first receive antenna with respect to a second received signal corresponding to a second receive antenna, and to add the delayed first received signal and the second received signal to obtain a baseband representation of a combined signal at an output of the combiner as the baseband signal for exploiting receive antenna diversity.08-18-2011
20090003489Clustered OFDM with channel estimation - An improved OFDM receiver is realized by employing a simplified delay function for the transmissions channel. The simplified delay function yields a simplified frequency-domain correlation that is applied to develop an Eigen matrix U that is used in developing estimates of the channels. Those channel estimates are used in the receiver to develop the output signals.01-01-2009
20100220815Method for Processing a Data Signal, Data Processing Unit and Computer Program Conduct - A method for processing a data signal received via a communication channel is described, comprising determining a first matrix comprising components describing characteristics of the communication channel and inverting the first matrix by sub-dividing the first matrix into at least four sub matrices, inverting a first sub matrix of the four sub matrices generating a second matrix by multiplying a second sub matrix of the four sub matrices with the inverted first matrix and a third sub matrix of the four sub matrices, determining the difference matrix between the second matrix and a fourth sub matrix of the four sub matrices inverting the difference matrix and calculating the inverted matrix based on the inverted difference matrix. The data signal is processed using the inverted first matrix.09-02-2010
20090103652SAMPLING RECEIVER - The switching operation of a high frequency switch connected in series downstream from the amplifier circuit produces a load variation on the amplifier circuit, and serially connecting the amplifier circuit and high frequency switch causes a drop in gain due to an in-band mismatch. An amplifier circuit is connected to the input pin for input a high frequency signal, and the output of the amplifier circuit branches to serially connected resistances. An RC filter composed of a resistance and a capacitance is parallel connected between the resistances and the downstream high frequency switches. Input pins for inputting a high frequency signal are connected to the gates of the high frequency switches. Capacitances are parallel connected downstream from the high frequency switches, forming a switched capacitor circuit connected to the output pins.04-23-2009
20090041160TAPS FOR DATA FROM HARDWARE ENGINES IN A RECEIVER - Systems, methods, devices, and processors are described for a wireless receiver. The receiver may be configured to receive signals transmitted according to various mobile digital television standards. The receiver may include a number of hardware engines. The hardware engines may be individually controlled in a number of aspects. Power to particular hardware engines may be controlled, and the speed of the different hardware engines may vary. The receiver may include a novel multi-function decoder engine. The receiver may be configured to dynamically avoid problems related to harmonics, and may include a novel tap configuration with taps at different locations in the data flow.02-12-2009
20110200147HIGH-PERFORMANCE TONE DETECTION USING A DIGITAL SIGNAL PROCESSOR (DSP) HAVING MULTIPLE ARITHMETIC LOGIC UNITS (ALUS) - In one embodiment, a DSP having four arithmetic logic units (ALUs) and able to have two read/write operations per clock cycle performs silence detection and tone detection for data frames containing samples of an audio signal. The ALUs are used together in parallel to process the samples in the data frames received by the DSP. A received data frame is filtered by the silence detection so that substantially silent frames are dropped and non-silent frames are further processed. In the tone detection, a filtered data frame is processed, four samples at a time, to determine the power of the signal at a given frequency, where the power determination is used to determine whether a given tone (i.e., a signal at a given frequency) is present in the data frame.08-18-2011
20110200146RECEIVING DEVICE, RECEIVING METHOD, AND PROGRAM - Disclosed herein is a receiving device, including a receiving section configured to receive only a partial segment among a plurality of segments obtained by dividing a frequency band of one physical channel when the receiving device is in a waiting state, and return from the waiting state to an activated state when warning information is transmitted, if transmission of the warning information by the partial segment is possible.08-18-2011
20110200145RECEIVING DEVICE, INFORMATION PROCESSING METHOD, PROGRAM, AND SEMICONDUCTOR CHIP - A receiving device includes: a receiving section configured to output a detection flag indicating that warning information is transmitted or at least part of the warning information if the warning information is transmitted; and a controlling section configured to start processing for outputting warning if the detection flag or the at least part of the warning information is supplied, wherein the supply of the detection flag or the at least part of the warning information to the controlling section is carried out by input of the detection flag or the at least part of the warning information output from a pin of a first semiconductor chip on which the receiving section is mounted to a pin of a second semiconductor chip on which the controlling section is mounted.08-18-2011
20090168923MULTICARRIER-SIGNAL RECEIVING APPARATUS AND MULTICARRIER-SIGNAL TRANSMITTING APPARATUS - A multicarrier-signal receiving apparatus includes: a Fourier-transformer that performs a Fourier transform, on reception signals to extract subcarriers; a channel estimator that performs channel estimation on one of the extracted subcarriers using channel estimation symbols included in a subcarrier group to which the one of the extracted subcarriers belongs, the subcarrier group including subcarriers to which an identical phase rotation is added upon transmission; and a channel compensator that performs channel compensation on data symbols included in the one of the extracted subcarriers using a result of the channel estimation performed by the channel estimator on the one of the extracted subcarriers.07-02-2009
20090310712WIRELESS RECEIVER - Provided is a wireless receiver capable of realizing multi-band and multi-mode operations while reducing an electric power consumption of an RF analog local oscillator.12-17-2009
20110206161METHOD AND SYSTEM FOR A DELTA QUANTIZER FOR MIMO PRE-CODERS WITH FINITE RATE CHANNEL STATE INFORMATION FEEDBACK - A MIMO pre-coding system for a delta quantizer for MIMO pre-coders with finite rate channel state information feedback may include quantizing a change in channel state information in a MIMO pre-coding system onto a codebook, which comprises one or more unitary matrices, using a cost function. The codebook may be generated based on at least the channel state information. The channel state information may comprise a matrix V and the cost function f(A) may be defined by the following relationship:08-25-2011
20110206160RECEIVING DATA COMPENSATION METHOD TO IMPROVE DATA RECEIVING RATE AND RECEIVING MODEM CIRCUIT THEREOF - Included in the present general inventive concept are a receiving data compensating method to improve a data receiving rate and a receiving modem circuit thereof. The receiving data compensating method may include measuring a receiving characteristic offset based on characteristics of a receiver according to first and second state data. After measuring the receiving characteristic offset, a first data sample time offset to correspond to the first state data and a second data sample time offset to correspond to the second state data are independently decided. The decided first and second data sample time offsets are applied during compensation of receiving data received through a receiver. A near field communication (NFC) multimedia device may implement the receiving data compensation method.08-25-2011
20080292021Method And Module For Acquiring Digital Subscriber Line Parameter, And Line Management System - The present disclosure includes a method for acquiring DSL parameters, a module for acquiring Digital Subscriber Line (DSL) parameters, and a line management system. The method includes: obtaining the priority of a DSL; and acquiring parameters of the DSL in an acquisition period corresponding to the obtained priority, in accordance with a preset corresponding relationship between the priority of the DSL and the acquisition period. The system includes: a module for acquiring DSL parameters, configured to obtain the priority of a DSL and acquire parameters of the DSL in an acquisition period corresponding to the obtained priority in accordance with a preset corresponding relationship between the priority of the DSL and the acquisition period; a database configured to store the parameters acquired by the module for acquiring DSL parameters; a line management module configured to manage the DSL using the DSL parameters.11-27-2008
20080304595DSP workload distribution in a power line carrier system - Disclosed are various embodiments for dividing workload in a digital signal processing system. In one embodiment, the system includes at least one analog-to-digital converter configured to receive a three phase analog waveform and a digital waveform. The system can also include a first DSP configured to interface with an external computer and a second DSP configured to receive the digital waveform and isolate a specified frequency range. The system can also include a plurality of DSP's configured to extract specified channels from the specified frequency range and output the extracted channel data.12-11-2008
20120294391CONTROL SIGNAL RECEIVER AND COMMUNICATION DEVICE HAVING THE SAME - A control signal receiver includes a converting circuit and a synchronization detection circuit. The converting circuit generates a complex control symbol stream including transmission configurations by converting an input signal. The synchronization detection circuit generates a first bit stream by applying a first determination criterion to the complex control symbol stream and generates a first synchronization signal by comparing the first bit stream with a reference synchronization word. The synchronization detection circuit generates a second bit stream by applying the first determination criterion and a second determination criterion to the complex control symbol stream in that order and generates a second synchronization signal by comparing the second bit stream with the reference synchronization word. The synchronization detection circuit outputs one of the first synchronization signal and the second synchronization signal as asynchronization enable signal. The control signal receiver effectively establishes frame synchronization.11-22-2012
20120294390METHOD OF SELECTING METRICS AND RECEIVER USING THE SAME - A method and apparatus of selecting N metrics among M metrics is provided. The apparatus determines M metrics P(i), where i=1, . . . , M. Each P(i) is represented by B bits. The apparatus determines N metrics among M metrics. The complexity for configuring the circuit is decreased, and the length of the critical path is reduced.11-22-2012
20080205552METHOD AND APPARATUS FOR TRANSMISSION WITHIN A MULTI-CARRIER COMMUNICATION SYSTEM - Multiple transmit antenna transmission together with preferably pseudo-random, antenna-specific, scrambling (PRAS) is utilized to scramble incoming data differently on different antennas for those users requiring frequency diversity type transmissions. When PRAS is activated for a particular allocation, each transmit antenna applies a different scrambling sequence to the data symbols that are transmitted in the allocation.08-28-2008
20080253482Receiving circuit and method thereof - A receiving circuit is provided for receiving a data signal and a clock signal, which are RSDS signals, and outputting an output data signal to a data driver. The receiving circuit includes a data comparator, a data intermediate circuit, a clock comparator, a clock intermediate, and a flip-flop. The data comparator, driven with a data bias current, receives the data signal, and outputs a compared data signal. The clock comparator, driven with a clock bias current, receives the clock signal, and outputs a compared clock signal. The flip-flop receives the compared data signal via the data intermediate circuit and the compared clock signal via the clock intermediate circuit. The phase difference between the compared data signal and the compared clock signal is improved by adjusting the data and the clock bias currents.10-16-2008
20080285683Serial data receiving circuit - Object: Reduction of the power consumption except during the receiving operation by analyzing the control command inputted by asynchronous method according to the CPU instructions and identifying the communication rate and the character set.11-20-2008
20100142646System And Method For Improved Communication Utilizing Velocity Related Information - According to one embodiment, a method for communication includes receiving, by a receiver, a first modulated signal. The first modulated signal includes at least one error. The method also includes demodulating the first modulated signal. The demodulation includes compensating for the at least one error utilizing information related to a velocity of the receiver.06-10-2010
20080240293DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA - A digital broadcast system and method of processing data are disclosed. A channel equalizer includes a frequency domain converter receiving a known data sequence, when the known data sequence is periodically inserted and transmitted in general data, and converting the received data to frequency domain data, a CIR estimator using the data being received during a known data section and known data generated by a receiving system, so as to estimate a CIR, a CIR calculator interpolating or extrapolating the CIR estimated by the CIR estimator in accordance with characteristics of the general data being received, a coefficient calculator converting the CIR being outputted from the CIR calculator to a frequency domain CIR and calculating and outputting an equalization coefficient, and a distortion compensator multiplying the equalization coefficient calculated by the coefficient calculator with the data converted to frequency domain data by the frequency domain converter, thereby compensating channel distortion.10-02-2008
20080240292System and method for determining signal phase - A receiver circuit (10-02-2008
20110206163DIGITAL SIGNAL CONDITIONING - Methods, systems and other embodiments associated with pre-processing a signal for spectral analysis are presented. A system for pre-processing a digital input signal includes a digital down converter (DDC), an interpolator, and a series of down samplers. The DDC modulates the digital input signal to create a down converted signal. The interpolator re-samples the down converted signal to produce a re-sampled signal. The series of down samplers produces down sampled signals. The multiplexer selects one of the digital input signal, the down converted signal, and the down sampled signals and routes the selected signal to an output line.08-25-2011
20110206162MULTI-CHANNEL RECEIVER - This invention relates to a method, a computer program product, a device, and a system, wherein a receiver unit (08-25-2011
20090129506DIGITAL BROADCASTING TRANSMISSION/RECEPTION SYSTEM HAVING IMPROVED RECEIVING PERFORMANCE AND SIGNAL PROCESSING METHOD THEREOF - A digital broadcasting transmission/reception system having improved receiving performance and signal processing method thereof. A digital broadcasting transmitter according to the present invention includes a data pre-processor which processed robust data and generates robust data packet of predetermined format, a TS stream generator which combines robust data packet with a normal data packet to generate a TS stream of a predetermined format, a randomizer which randomizes the TS stream output from the TS stream generator, a convolution encoder which performs convolution encoding with respect to the robust data of the data output from the randomizer, and a RS encoder which performs RS encoding with respect to the data output from the convolution g encoder. Accordingly, digital broadcasting receiving performance can be improved in a poor multipath channel, while maintaining compatibility with existing transmission/reception system.05-21-2009
20100142648APPARATUS AND METHOD FOR I/Q MISMATCH CALIBRATION - There is provided an apparatus and method for In-phase/Quadrature-phase (I/Q) mismatch calibration. The apparatus includes: a symmetrical point extracting part receiving continuous wave signals and extracting an I/Q channel average locus of the continuous wave signals; an error extracting part extracting a degree of distortion of the continuous wave signals from the extracted I/Q channel average locus; and a calibrating part calibrating a mismatch between I-channel signals and Q-channel signals of the continuous wave signals using the degree of distortion of the continuous wave signals.06-10-2010
20100142647METHOD FOR PROCESSING A SAMPLED RECTIFIED ULTRA WIDE BAND SIGNAL - A method for processing, in an ultra-wide band receiver, a sampled rectified ultra-wide band received signal, including: at least one sliding correlation between a selection of samples of the sampled ultra-wide band received signal and a correlation sequence, the sliding correlation carrying out a succession of n elementary correlation steps, n being an integer larger than or equal to 2, at a frequency f, between the selection of samples and the correlation sequence, an elementary correlation producing a series of intermediate correlation samples, and summation of the intermediate correlation samples delivered by each of the n elementary correlation steps to form n correlation samples which form a correlation vector.06-10-2010
20090129507DIGITAL BROADCASTING TRANSMISSION/RECEPTION SYSTEM HAVING IMPROVED RECEIVING PERFORMANCE AND SIGNAL PROCESSING METHOD THEREOF - A digital broadcasting transmission/reception system having improved receiving performance and signal processing method thereof. A digital broadcasting transmitter according to the present invention includes a data pre-processor which processed robust data and generates robust data packet of predetermined format, a TS stream generator which combines robust data packet with a normal data packet to generate a TS stream of a predetermined format, a randomizer which randomizes the TS stream output from the TS stream generator, a convolution encoder which performs convolution encoding with respect to the robust data of the data output from the randomizer, and a RS encoder which performs RS encoding with respect to the data output from the convolution g encoder. Accordingly, digital broadcasting receiving performance can be improved in a poor multipath channel, while maintaining compatibility with existing transmission/reception system.05-21-2009
20090129504DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA IN DIGITAL BROADCASTING SYSTEM - The present invention provides a data processing method. The data processing method includes receiving a broadcast signal in which main service data and mobile service data are multiplexed, acquiring transmission-parameter-channel signaling information including transmission parameter information of the mobile service data, and fast-information-channel signaling information, acquiring binding information describing a relationship between at least one ensemble transferring the mobile service data and a first virtual channel contained in any of the at least one ensemble by decoding fast-information-channel signaling information, acquiring ensemble identification information transferring the first virtual channel using the binding information, and receiving at least one mobile service data group transferring an ensemble according to the ensemble identification information, parsing service table information contained in the ensemble and decoding content data contained in the first virtual channel using the parsed service table information, and displaying the decoded content data.05-21-2009
20120140856RECEIVING APPARATUS AND RECEIVING METHOD - A receiving apparatus for being viewable of a first broadcast based on a first received signal received using a first frequency band as any one frequency band of a plurality of frequency bands, or being viewable of a second broadcast based on a second received signal received using a second frequency band as all frequency bands other than the first frequency band of the plurality of frequency bands, the receiving apparatus including: a receiving unit which receives a third received signal by using a third frequency band as any one frequency band of a plurality of frequency bands included in the second frequency band when the first broadcast is being viewed; and a control unit which determines whether the second broadcast is viewable or nor based on the third received signal, and switches from viewing of the first broadcast to viewing of the second broadcast.06-07-2012
20120140855RECEIVING APPARATUS AND DATA TRANSMISSION APPARATUS - According to an aspect of the invention, a receiving apparatus includes a receiving unit, a reverse conversion unit, and an extracting unit. The receiving unit receives conversion data which is generated, based on a predetermined first rule, by converting transmission data including a plurality of bits and data including an error detection code for detecting an error of the transmission data. The reverse conversion unit reverse-converts, based on a predetermined second rule, the conversion data received by the receiving unit and reverse data generated by reversing a part of bits of the received conversion data to generate a plurality of reverse conversion data. The extracting unit extracts, from the plurality of the reverse conversion data, the reverse conversion data for which an error is not detected in an error detection based on the error detection code.06-07-2012
20090161795Method and Apparatus for Processing a Signal - The present invention relates to a method and apparatus for processing a signal. An object of the present invention devised to solve the problem lies on a method and apparatus for processing a signal, which allows a signal having optimized signal transmission efficiency to be transmitted/received. According to an aspect of the present invention, there is provided a method of processing a signal including receiving a broadcasting signal including audio data coded using a pilot reference value and a pilot difference value, demodulating the broadcasting signal in consideration of a scattered pilot which varies over time and a continual pilot which is fixed over time in a frame of the received broadcasting signal and decoding the demodulated signal to obtain a broadcasting transmission stream, demultiplexing the broadcasting transmission stream to obtain coded audio data in an Internet protocol (IP) packet and an identifier for identifying a method of decoding the audio data, obtaining the pilot reference value corresponding to a plurality of data and the pilot difference value corresponding to the pilot reference value from the coded audio data and obtaining the audio data using the pilot reference value and the pilot difference value.06-25-2009
20090129505PARTIAL-RATE TRANSFER MODE FOR FIXED-CLOCK-RATE INTERFACE - Systems and methods are provided for a partial-rate transfer mode using fixed-clock-rate interfaces. In the partial-rate mode, each data bit is transmitted consecutively two or more times. The receiver uses a global clock without phase adjustment to detect the replicated incoming bits. As a result, the receiver system can receive data at a partial data rate when the system is locking into the phase of data received from the transmitter.05-21-2009
20100002805SIGNAL DECODING SYSTEM AND METHOD - A signal decoding system includes a signal acquisition unit, and a decoding unit including a segmenting module and a decoding module; the signal acquisition unit is configured for receiving a data waveform and a clock waveform outputted from one or more electronic devices; the segmenting module is configured for dividing the data waveform and the clock waveform into segments; and the decoding module is configured for decoding each segmented data waveform.01-07-2010
20110142171BROADCASTING SYSTEM AND RECEPTION APPARATUS - A broadcasting system 06-16-2011
20120069934SYSTEM AND METHOD FOR REDUCING POWER CONSUMPTION IN A FLO-EV RECEIVER - A method for exiting receiver processing in a FLO-EV receiver comprises receiving a communication signal comprising at least one received symbol, deriving a channel performance metric based on the received symbol, determining whether the metric exceeds a threshold, and when the metric exceeds the threshold, providing a logic signal to signal receiver processing cessation.03-22-2012
20090080569METHOD OF GENERATING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method of generating a reference signal includes acquiring a base sequence and acquiring a reference signal sequence with a length N from the base sequence. Good PAPR/CM characteristics of the reference signal can be kept to enhance performance of data demodulation or uplink scheduling.03-26-2009
20110228880DIGITAL BROADCASTING RECEIVER FOR PROTECTION OF BROADCASTING CONTENTS AND THE METHOD THEREOF - Provided are a digital broadcasting receiver and method of broadcast content protection. The digital broadcasting receiver comprises a platform which stores received broadcast data, middleware which comprises an application manager managing various applications so that broadcast content corresponding to the received broadcast data is used according to a consumption policy, a platform interface unit which acts as an interface between the platform and the middleware, and a middleware interface unit which acts as an interface between the various applications and the middleware. According to the method, various broadcast content protection and management policies can be accepted in various digital broadcasting receivers, each having different hardware and software structures.09-22-2011
20110142172A DEVICE FOR AND A METHOD OF PROCESSING DATA SIGNALS - A method of data signal processing is provided, wherein the method comprises filtering a pre-filtered quadrature data signal by using an m×n filtering matrix, wherein m≠n. In particular, the filtering may be performed by using a rectangular matrix, i.e. a non-quadratic matrix. That is, the filtering may be performed by a matrix multiply in an image cancellation filtering unit. In general m relates to the 5 number of rows of the matrix while n relates to the number of columns of the matrix. In particular, the processing may form or may be a part of an image cancellation process.06-16-2011
20110228881Method circuit and system for adapting a receiver to receive chain components based on characteristics of a received signal - Disclosed is a method, circuit and system for adapting a receiver to receive chain based on characteristics of a received signal. There is provided a circuit and system for wireless data communication along a given radio frequency (RF) carrier frequency or a plurality of carrier frequencies from the set of available carrier frequencies. Communication signals may be transmitted and received along a given channel (i.e. a RF signal with some bandwidth centered at a given carrier frequency or a plurality of carrier frequencies) or a plurality of channels from the set of available channels. According to further embodiments of the present invention, the circuit may include an RF transmitter for wireless data broadcasting.09-22-2011
20130121445RADIO RECEIVER APPARATUS AND RADIO TRANSMITTER APPARATUS - A radio receiver apparatus that can effectively utilize GI to improve the reception quality. In this apparatus, a data extracting part extracts a data portion of a direct wave from a signal subjected to a radio reception process by a received RF part. A GI extracting part extracts, from the signal subjected to the radio reception process by the received RF part, GI having a length determined by an extracted GI length deciding part. The extracted GI is adjusted by a data position adjusting part such that its rear end coincides with the read end of the extracted data portion. A combining part combines the extracted data portion with the GI the data position of which has been adjusted. The combined signal is then supplied to a frequency axis equalizing part, which equalizes the signal distortions of the combined signal on the frequency axis.05-16-2013
20110222632RECEIVING APPARATUS AND RECEIVING METHOD - A receiving apparatus configured to receive a downlink signal in which pilot symbols are mapped discontinuously on a frequency axis and on a time axis, includes: a first Fourier transform unit configured to perform Fourier transform on the downlink signal; an extraction unit configured to extract reference signals included in a predetermined band from the downlink signal that is Fourier transformed; an inverse Fourier transform unit configured to generate a first signal having a first window size by arranging the extracted reference signals on the frequency axis and by performing inverse Fourier transform on the reference signals arranged on the frequency axis; a time extraction unit configured to divide the first signal into a plurality of signals to extract a signal included in a second window; an adjustment unit configured to generate a second signal that includes the signal included in the second window and that has a window size similar to the first window size in which 0 is inserted in points other than the signal; a second Fourier transform unit configured to generate a third signal by performing Fourier transform on the second signal; and a received power calculation unit configured to calculate received power based on the third signal.09-15-2011
20090245424SEMICONDUCTOR DEVICE, MEMORY DEVICE AND MEMORY MODULE HAVING DIGITAL INTERFACE - An object of the present invention is to reduce jitter dependent on data patterns by an interface receiver. Another object of the present invention is to provide an LSI capable of automatically adjusting a delay time for jitter reduction so as to be able to control its setting for each device. Since the jitter dependent on the data patterns can be expected according to how the previous state is being placed, the state of data received by the receiver is held, and the timing provided to fetch input data is adjusted according to the held state and the input data. As a control mechanism lying in the receiver, for determining a delay time dependent on the form of mounting, a driver transmits and receives pulse data set at one-cycle intervals and pulse data set at two-cycle intervals as test patterns. The receiver has an automatic control mechanism for determining a delay time optimal to a system from the difference between a rising time of each of pulses different in pulse width and its falling time.10-01-2009
20090245423De-Interlever That Simultaneously Generates Multiple Reorder Indices - A de-interleaver involves logic that receives a seed and that simultaneously generates from the seed a plurality of reorder indices. The plurality of reorder indices is usable for de-interleaving an incoming stream of interleaved code bits. Each plurality of simultaneously generated reorder indices generated corresponds to a set of simultaneously received code bits in the incoming stream. The reorder indices are converted into physical addresses in parallel and these physical addresses are used to store the set of code bits into a memory. Code bits for multiple sub-packets of different sub-packet sizes are typically present in memory at the same time. The code bits are then read out of memory to form an outgoing stream of de-interleaved code bits. The de-interleaver has a pipelined architecture such that sets of code bits are written into the memory at the same rate that sets of code bits are received onto the de-interleaver.10-01-2009
20110142169ELECTRONIC DEVICE, INTEGRATED CIRCUIT AND METHOD FOR SELECTING OF AN OPTIMAL SAMPLING CLOCK PHASE - An electronic device comprises a number of sub-systems coupled via an interface. One of the number of sub-systems comprises logic for receiving a frame of input data having a plurality of phases on respective data paths. The electronic device further comprises logic for performing cross correlation on the received input data with a pre-determined bit pattern, operably coupled to selection logic, for selecting a single phase from the plurality of phases sent to the interface to sample the received input data in a middle region of a data bit period in response to the cross correlation.06-16-2011
20090122915DIGITAL BROADCASTING TRASMISSION/RECEPTION SYSTEM HAVING IMPROVED RECEIVING PERFORMANCE AND SIGNAL PROCESSING METHOD THEREOF - A digital broadcasting transmission/reception system having improved receiving performance and signal processing method thereof. A digital broadcasting transmitter according to the present invention includes a data pre-processor which processed robust data and generates robust data packet of predetermined format, a TS stream generator which combines robust data packet with a normal data packet to generate a TS stream of a predetermined format, a randomizer which randomizes the TS stream output from the TS stream generator, a convolution encoder which performs convolution encoding with respect to the robust data of the data output from the randomizer, and a RS encoder which performs RS encoding with respect to the data output from the convolution g encoder. Accordingly, digital broadcasting receiving performance can be improved in a poor multipath channel, while maintaining compatibility with existing transmission/reception system.05-14-2009
20090316833RECEIVER - A receiver employing an OFDM system which uses a frequency band that is constituted by a plurality of subchannels, and receiving a signal added a phase rotation which is made to respectively differ for each transmission antennas of transmitter and transmitted from the transmission antennas, having a virtual subchannel quality estimating portion which estimates the quality of a propagation path in the case of same phase rotation is added to signal transmitted from transmitter, each group configured with a plurality of consecutive subcarriers.12-24-2009
20090116584System and Method for Receiving User-Specific Information Over Digital Radio - A system and method for permitting users to receive desired/user-specific data or information, e.g., electronic mail or other user-subscribed services, e.g., for textual information, over the airwaves via a receiver, e.g., a digital receiver In one embodiment, an authorization process is provided wherein the receiver includes a hard-coded user ID stored thereon for comparison with an input user ID encoded with user-specific data signals. A splitter permits simultaneous processing of e.g., radio frequency signals including user-specific information via an authorization path, as well as radio frequency signals having standard audio and/or audio/video information. The authorization path includes an out-of-band tuner and an authorizing means for authorizing user-specific data transmissions for retrieval by an authorized receiver05-07-2009
20090116585ANALOG FRONT-END HAVING BUILT-IN EQUALIZATION AND APPLICATIONS THEREOF - An analog front-end having built-in equalization includes a control module and a tunable gain stage. The control module is operably coupled to provide a frequency response setting based on a channel response of a channel providing high-speed serial data to the analog front-end. The tunable gain stage includes a frequency dependent load and an amplifier input section. The frequency dependent load is adjusted based on the frequency response setting. The amplifier input section is operably coupled to the frequency dependent load and receives the high-speed serial data. In conjunction with the frequency dependent load, the amplifier input section amplifies and equalizes the high-speed serial data to produce an amplified and equalized serial data.05-07-2009
20100189194FREQUENCY GENERATION CIRCUIT - A frequency generation circuit comprises a crystal oscillator (07-29-2010
20100183094RECEPTION DEVICE AND RECEPTION METHOD - A reception device includes a block division setting unit which sets a block division setting value based on an arrived delay wave group, a replica signal generating unit which generates a replica signal which is a replica of a transmitted signal based on a received signal, a delay wave removing unit which removes delay waves from the received signal for every time period, the removals being performed by using the block division setting value set by the block division setting unit and the replica signal, a combining unit which combines the signal from which the delay wave was removed, the combining being performed by the combining unit for every time period, and a determining unit which makes determination on the signal combined by the combining unit.07-22-2010
20100177849PARALLEL SAMPLING DEVICE,PARALLEL SAMPLING METHOD,RECEIVING DEVICE, AND RECEIVING METHOD - A parallel sampling device comprises a memory that stores the values of the sampling function (Sin πt/πt), a low pass filter, sampling means that samples a signal, which has passed through low pass filter, at a sampling period of Ts, and parallel sampling means provided in a stage following the sampling means. The parallel sampling means generates parallel sampled values at an interval of the sampling period Ts/N(N is a natural number equal to or larger than 2) based on sampled values obtained by the sampling means and the values of the sampling function stored in the memory. This configuration allows parallel sampling to be performed easily even if the frequency is high or the sampling period of parallel sampling is narrow.07-15-2010
20130216003RESETTABLE VOLTAGE CONTROLLED OSCILLATORS (VCOs) FOR CLOCK AND DATA RECOVERY (CDR) CIRCUITS, AND RELATED SYSTEMS AND METHODS - Clock and data recovery (CDR) circuits and resettable voltage controlled oscillators (VCOs) are disclosed. In one embodiment, the CDR circuit includes a sampler configured to receive a data stream in a data path and sample the data stream. However, a clock signal of the data stream needs to be recovered to sample the data stream since the data stream may not be accompanied by the clock signal. To recover the clock signal from the data stream, the CDR circuit may have a resettable VCO configured to generate a clock output. The sampler and the resettable VCO may be operably associated so that the sampler samples the data stream in the data path based on the clock output. The resettable VCO can be reset to adjust a clock phase of the clock output and help reduce sampling errors resulting from drift of the clock output and/or the data stream.08-22-2013
20110058629COEFFICIENT PROVISION SYSTEM AND METHOD USING SQUARE MATRICES - Methods and systems for providing coefficients to data processing systems. The method operates by calculating the coefficients instead of storing them. A full rank square matrix (having either 1 or −1 in all positions) is used in conjunction with a single column matrix of specific numbers. Depending on the binary input, one row in the square matrix is matrix multiplied with the single column matrix to arrive at the desired coefficient. The result of the matrix multiplication is the desired coefficient after a series of additions and subtractions between the specific numbers in the single column matrix. An implementation of the method has an input module which receives the digital input, a square matrix module that selects a 1 or a −1 to be applied to specific stored values, a stored values module which stores the stored values and which multiplies the selected 1 or −1 to the relevant stored value. Finally, an accumulator module adds and subtracts the stored values after the relevant 1 or −1 has been applied. The output of the accumulator module is the desired coefficient.03-10-2011
20110058627USE OF RDS DATA TO SELECT MATCHING NETWORK - Devices and methods for dynamically selecting a matching network for an antenna are provided. In one example, an electronic device capable of selecting such a matching network may include an antenna, several selectable matching networks, a radio receiver, and matching network control circuitry. The radio receiver may couple to the antenna via one of the selectable matching networks to receive a radio signal with both an analog and digital component. The matching network control circuitry may select the matching network from among the several selectable matching networks based at least in part on a characteristic of the digital component of the radio signal.03-10-2011
20100239049METHOD OF CONTROLLING POWER CONSUMPTION FOR A RADIO RECEIVER - In a radio receiver, an analog/digital converting unit, which digitalizes a received signal down-converted in a radio frequency unit and takes the digitalized signal in a baseband unit, is capable of setting a bias current. A method of controlling power consumption includes determining whether a change is a first change in which a state is changed from a receive state to a standby state of the communication signal or a second change in which a state is changed from the standby state to the receive state based on a digital signal output from the analog/digital converting unit; and setting the bias current to a value smaller than a value in case of the second change when the determined change is the first change, and setting the bias current to a value larger than a value in case of the first change when the determined change is the second change.09-23-2010
20090041159POWER CONTROL FOR RESPECTIVE HARDWARE ENGINES IN WIRELESS RECEIVER - Systems, methods, devices, and processors are described for a wireless receiver. The receiver may be configured to receive signals transmitted according to various mobile digital television standards. The receiver may include a number of hardware engines. The hardware engines may be individually controlled in a number of aspects. Power to particular hardware engines may be controlled, and the speed of the different hardware engines may vary. The receiver may include a novel multi-function decoder engine. The receiver may be configured to dynamically avoid problems related to harmonics, and may include a novel tap configuration with taps at different locations in the data flow.02-12-2009
20110110463RECEIVER WITH BALANCED I/Q TRANSFORMER - A receiver with a balanced I/Q transformer is described. In an exemplary design, the receiver includes an LNA that amplifies a received RF signal and provides a single-ended RF signal to the balanced I/Q transformer. The balanced I/Q transformer includes at least one primary coil and first and second secondary coils. The first secondary coil is magnetically coupled to the at least one primary coil and provides a first differential RF signal to a first mixer. The second secondary coil is magnetically coupled to the at least one primary coil and provides a second differential RF signal to a second mixer. The first and second mixers downconvert the first and second differential RF signals with I and Q LO signals, respectively, and provide differential I and Q downconverted signals. The primary and secondary coils may be fabricated on two conductive layers of an integrated circuit.05-12-2011
20100220816POWER SAVINGS IN HIERARCHICALLY CODED MODULATION - A wireless communication apparatus in a hierarchically coded modulation system can use error control mechanisms generated during decoding of base layer information to predict a probability of successful demodulation of enhancement layer information. Performance in the demodulation of the base layer correlates to performance in the demodulation of the enhancement layer. The receiver can determine whether to attempt demodulation of temporally correlated enhancement layer data based in part on the predicted probability of success. If the receiver determines not to demodulate the enhancement layer, the receiver can power down the enhancement layer demodulator, or otherwise minimize the power expended in the enhancement layer demodulator.09-02-2010
20080253483METHOD FOR RECEIVING SIGNAL AND APPARATUS THEREOF - A signal receiving apparatus includes a frequency converting circuit, a computing circuit, and a control circuit. The frequency converting circuit is for converting a RF signal to respectively generate a first converted signal and a second converted signal according to a first converting frequency and a second converting frequency. The computing circuit is for computing signal quality parameters of the first converted signal and the second converted signal. The control circuit is for outputting a control signal according to the signal quality parameters of the first converted signal and the second converted signal, wherein the control signal corresponds to the converting frequency of the frequency converting circuit.10-16-2008
20110129035SELF-ADAPTIVE FREQUENCY INTERPOLATOR FOR USE IN A MULTI-CARRIER RECEIVER - A Digital Video Broadcasting-Terrestrial/Handheld (DVB-T/H) receiver comprises a controller and a frequency interpolator for use in estimating channel state information (CSI) information of a received signal by frequency interpolation. The controller determines a multi-path delay (T06-02-2011
20100296606DIVERSITY RECEIVING APPARATUS, DIVERSITY RECEIVING METHOD, SEMICONDUCTOR INTEGRATED CIRCUIT, AND RECEIVER - There is provided an apparatus, comprising: a first branch (11-25-2010
20100296607RECEIVING APPARATUS FOR RECEIVING SIGNALS THROUGH ADAPTIVE ARRAY ANTENNA - Preceding filters receives the inputs of a plurality of received signals associated respectively with a plurality of antennas. Subsequent filters band-limit the plurality of inputted received signals, respectively. A first combining unit derives a weight vector for the plurality of band-limited received signals and performs array synthesis on the plurality of band-limited received signals, using the derived weight vector. The second combining unit performs array synthesis on the plurality of inputted received signal signals, using the derived weight vector. A demodulator demodulates the array-synthesis result.11-25-2010
20130136209Active General Purpose Hybrid - A general purpose hybrid includes a first input port in communication with a first dual vector generator, a second input port in communication with a second dual vector generator, a first active combiner receives a first signal from the first dual vector generator and a third signal from the second dual vector generator, where the first and second dual vector generators independently apply phase shifting and amplitude control to the first and third signals; a second active combiner receives a second signal from the first dual vector generator and a fourth signal from the second dual vector generator, where the first and second dual vector generators independently apply phase shifting and amplitude control to the second and fourth signals; a first output port provides a first composite signal from the first active combiner; and a second output port provides a second composite signal from the second active combiner.05-30-2013
20100310010RADIO FREQUENCY INTEGRATED CIRCUIT HAVING FREQUENCY DEPENDENT NOISE MITIGATION WITH SPECTRUM SPREADING - A plurality of baseband clock signals by detecting an interference condition associated with at least one of the plurality of baseband clock signals and by spreading the spectrum of the at least one of the plurality of baseband clock signals when the interference condition is detected.12-09-2010
20100310011SENSOR-BASED WIRELESS COMMUNICATION SYSTEMS USING COMPRESSIVE SAMPLING - Methods, devices and systems for sensor-based wireless communication systems using compressive sampling are provided. In one embodiment, the method for sampling signals comprises receiving, over a wireless channel, a user equipment transmission based on an S-sparse combination of a set of vectors; down converting and discretizing the received transmission to create a discretized signal; correlating the discretized signal with a set of sense waveforms to create a set of samples, wherein a total number of samples in the set is equal to a total number of sense waveforms in the set, wherein the set of sense waveforms does not match the set of vectors, and wherein the total number of sense waveforms in the set of sense waveforms is fewer than a total number of vectors in the set of vectors; and transmitting at least one sample of the set of samples to a remote central processor.12-09-2010
20130142285MAJORITY DETECTOR APPARATUS, SYSTEMS, AND METHODS - Apparatus, methods, and systems are disclosed, including, for example,a data receiver to receive a calibration voltage and a reference voltage to calibrate the data receiver. The output of the data receiver is provided to a first ripple counter that counts the outputs from the data receiver and provides an output count. The ripple counter may count either ones or zeros. A second ripple counter counts the number of a clock signals over the same period of time. The output count is either multiplied by two or the count of clock signals is divided by two. A ripple comparator may then compare the outputs and adjust the reference voltage based upon the comparison results.06-06-2013
20090067546Method for Compensating Electromagnetic Data - Method for compensating for phase errors in electromagnetic data by exploiting the frequency scaling properties of electromagnetic fields. The data are obtained at various source-receiver offsets. Then, temporal frequency components of the data at each offset R are determined. Next, the phase spectrum (phase vs. offset) for each of the frequency components is determined. Then, the phase spectra for the different frequencies f are displayed vs. scaled offset R√ω, where ω=2πf. Finally, the phase spectra are then adjusted such that the differences in phases for the different frequencies are reduced. The adjustment process can be repeated until phase differences are reduced to an acceptable level.03-12-2009
20110110464RADIO BROADCAST RECEIVER - A radio broadcast receiver includes a broadcast reception and reproduction unit 05-12-2011
20110129037DIGITAL POWER AMPLIFIER WITH I/Q COMBINATION - An electronic circuit, such as a transmitter, for receiving a modulating signal including an in-phase component (I) and a quadrature component (Q). The electronic circuit has a first digital-to-RF-amplitude convertor (DRAC) receiving the in-phase component and a second digital-to-RF-amplitude convertor (DRAC) receiving the quadrature component. The first digital-to-RF-amplitude convertor is operative in a first duty cycle that is different from 50% and the second digital-to-RF-amplitude convertor is operative in a second duty cycle that is different from 50% and substantially the same in value as said first duty cycle.06-02-2011
20110019772DEVICE AND METHOD FOR MOVING A RECEIVE WINDOW IN A RADIO ACCESS NETWORK - A method of moving a receiving window in a wireless mobile communication system, wherein the AM RLC of the transmitting side sends information of the last discarded SDU regardless of continuity of the discarded SDUs. The AM RLC of the receiving side checks whether all SDUs from the start point of the receiving window up to the last discarded SDU are successfully received, delivers the SDUs that are successfully received to an upper layer, and discard only those SDUs that are not successfully received.01-27-2011
20110026641Cyclic Delay Diversity in a Wireless System - A system includes a first transmitter, a second transmitter, and a legacy receiver. The first transmitter transmits information via a first channel to the legacy receiver. The second transmitter transmits a time-shifted version of the information via a second channel to the legacy receiver. The legacy receiver combines the information received via the first channel and the time-shifted information received via the second channel to provide combined information. The legacy receiver processes the combined information as though it is received via a single channel.02-03-2011
20110026642MOBILE COMMUNICATION SYSTEM, TRANSMITTING DEVICE, RECEIVING DEVICE, AND METHOD - A transmitting device for a mobile communication system employing a multicarrier scheme includes a mapping unit configured to map control information to subcarriers in a subframe; an inverse Fourier transform unit configured to inverse-Fourier-transform a signal of the mapped control information; and a transmitting unit configured to wirelessly transmit a transmission signal including the inverse-Fourier-transformed signal to a receiving device. The control information is mapped to control frequency bands that are discontinuous in the frequency domain and are provided across the subframe separately from frequency bands for a shared data channel. The mapping is performed such that the control information for the receiving device mapped to one of the control frequency bands is transmitted at the same time as the control information or the shared data channel for the receiving device mapped to a different frequency band.02-03-2011
20090034656BROADCAST RECEIVING SYSTEM AND METHOD FOR PROCESSING BROADCAST SIGNALS - A broadcast receiving system capable of receiving mobile broadcast data and a method for processing broadcast signals are disclosed. The broadcast receiving system includes N number of antenna elements, a demodulator, a transmission parameter detector, and a block decoder. The N number of antenna elements receives each of the broadcast signals. The demodulator demodulates the broadcast signal having greater signal strength among each of the received broadcast signals. The transmission parameter detector detects the transmission parameter. The block decoder symbol-decodes the mobile broadcast service data included in the received broadcast signal in block units, based upon the detected transmission parameter.02-05-2009
20090003490Method and system for tracking and determining a location of a wireless transmission - An apparatus for detecting and timing a transmitting device is disclosed. The device includes a receiving system receiving a signal containing at least a preamble code of a known length and at least one pulse within a receive window after the preamble code, a circuit receiving the at least one pulse comprising a zero-crossing circuit for indicting a zero-voltage crossing of the at least one pulse and a trigger device for latching the indication of zero-voltage crossing, and a ripple circuit counter, receiving the latched indication of said zero-voltage crossing and associating a time to the receipt of the latched indication. A system for detecting and locating a transmitting device is further disclosed. The system includes a plurality of sensor apparatus each determining a reception time of a signal and a processor for determining a location based on groups of the reception times01-01-2009
20090052580DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA IN DIGITAL BROADCASTING SYSTEM - A digital broadcast system and a method of processing data disclose. A receiving system of the digital broadcast system may include a baseband processor, a management processor, and a presentation processor. The baseband processor receives broadcast signals including mobile service data and main service data. The mobile service data configures a RS frame, and the RS frame includes the mobile service data and at least one type of channel setting information on the mobile service data. The management processor decodes the RS frame to acquire the mobile service data and the at least one type of channel setting information on the mobile service data, then extracts position information of an SDP message. Herein, the SDP message includes Codec information for each component in the respective virtual channel from the channel setting information, thereby accessing the SDP message from the extracted position information and gathers SDP message information. The presentation processor decodes mobile service data of a corresponding component based upon the gathered SDP message information.02-26-2009
20110243275APPARATUSES AND METHODS FOR DATA TRANSMISSION AND RECEPTION - Provided is a data transmission system of providing preambles of different classes according to a characteristic of a terminal. A terminal having constraints on using a power with respect to a data reception may receive only a preamble of a particular class and thus decrease a power consumption. A generally terminal may receive preambles of plural classes and quickly receive data.10-06-2011
20110243274METHOD AND SYSTEM FOR IDENTIFICATION OF PORTABLE ANTENNA MODULES - Antenna identification data is transferred over a regular channel that is normally used for transferring navigation signals. Modulation of the received signal is used for transferring the portable antenna parameter data. Antenna identifications and parameters are written into a portable antenna module. The antenna module is attached to a radio receiver. The antenna module and the receiver are powered up. The portable antenna module receives radio signals that are amplified in a low-noise amplifier. Then, a level of the output signal is discretely modulated in the amplitude modulator and the signal is transferred to the radio receiver. The discrete fluctuations of the level of the signal are determined in the amplitude demodulator. The fluctuation of the level of the signal carries the information about the identification parameters of the portable antenna module. An analog-to-digital conversion of the determine signal fluctuation is performed in an analog-to-digital converter. The converted digital signal is used for receiving data related to the type and parameters of the portable antenna module.10-06-2011
20090213963DIGITAL RADIO RECEIVER - A digital radio receiver for receiving information on a piece of music that is identification information for specifying content of digital acoustic information, the identification information being broadcast together with the digital acoustic information, is provided. The digital radio receiver includes an internal memory configured to store the information on the piece of music; an operation unit configured to set a timing at which a flag is attached to the information on the piece of music recorded in the internal memory; and a controller configured to perform a process for storing the information on the piece of music in the internal memory.08-27-2009
20090213962Digital radio receiver and method of reproducing acoustic information - A digital radio receiver for receiving information on a piece of music that is identification information for specifying content of digital acoustic information, the identification information being broadcast together with the digital acoustic information is provided. The digital radio receiver includes an internal memory configured to store the information on the piece of music; an operation unit configured to set a timing at which the information on the piece of music is stored in the internal memory; a display unit configured to display the information on the piece of music; and a controller configured to perform a process for storing the information on the piece of music in the internal memory in response to the operation of the operation unit.08-27-2009
20090028271WIRELESS TRANSMITTING AND RECEIVING DEVICE AND METHOD - A wireless device, method, and signal for use in communication of a wireless packet between transmitting device and a wireless receiving device via a plurality of antennas, wherein a signal generator generates wireless packet including a short-preamble sequence used for a first automatic gain control (AGC), a first long-preamble sequence, a signal field used for conveying a length of the wireless packet, an AGC preamble sequence used for a second AGC to be performed after the first AGC, a second long-preamble sequence, and a data field conveying data. The AGC preamble sequence is transmitted in parallel by the plurality of antennas.01-29-2009
20110080977Apparatus for multicast transmissions in wireless local area networks - Message formats and apparatus are described that serve to reserve access to a communication medium in a multi-cast system. A first message, a multicast request-to-send message, includes a duration field having information representing the reserved time for a communication medium, a multicast receiver address field, a multicast transmitter address field, a field that identifies the number of slots for a clear-to-send response, and a field that identifies the number slots for a not-clear-to-send response. A second message includes a duration field, and a multicast receive address field. The second message has a format that can be used as one of a clear-to-send message in response to a multicast request-to-send message, a cancel-clear-to-send message that cancels a data transmission after the clear-to-send message is sent, and a not-clear-to-send message in response to the multicast request-to-send message.04-07-2011
20110069785System and Method for Low Complexity Sphere Decoding for Spatial Multiplexing MIMO - In this application, an algorithm for decoding multiple input-multiple output (MIMO) transmission for communication systems is provided; the algorithm combines sphere decoding (SD) and zero forcing (ZF) techniques to provide near optimal low complexity and high performance constant time modified sphere decoding algorithm; this algorithm was designed especially for large number of transmit antennas, that allows efficient implementation in hardware—this is done by limiting the number of overall SD iterations; moreover, we make sure that matrices with high condition number are more likely to undergo SD.03-24-2011
20110075765CONSTANT DELAY ZERO STANDBY DIFFERENTIAL LOGIC RECEIVER AND METHOD - A differential receiver circuit on an integrated circuit consumes substantially no standby power, has constant propagation delay regardless of the input common mode bias, has acceptable common mode rejection and includes first and second pass circuits and buffers to receive differential input signals. The first pass circuit provides a true output signal based on a differential between the “true” buffered signal and the complimentary buffered signal. The second pass circuit provides a “complementary” output signal based on a differential between the complimentary buffered signal and the “true” buffered signal. The differential receiver circuit rejects common mode biases that may be present on the received differential signals without varying propagation delay times.03-31-2011
20110075764FULL RANGE OFFSET CORRECTION FOR COHERENT OPTICAL OFDM SYSTEMS - A method includes synchronizing a received signal with at least two orthogonal frequency division multiplexed OFDM training signals having only in-phase values and being real in the time domain and determining a frequency offset correction from the synchronization of the received signal and training symbols responsive to a cross-correlation between said training symbols to enable estimating all possible frequency offsets for correction for enabling OFDM demodulation of said received signal.03-31-2011
20110069786RECEIVING DEVICE AND ADAPTIVE MODULATION METHOD - A mobile station (03-24-2011
20110058628ANTENNA SENSE CIRCUIT AND DIGITAL RADIO RECEIVER THEREOF - An antenna sense circuit includes a detector and a level shifter. The detector consists of a voltage drop component, a transistor component, a first resistor component, and a second resistor component. The voltage drop component is coupled between a first power supply and a first terminal of the first resistor component. The second resistor component has a first terminal coupled to a second terminal of the first resistor component and a second terminal coupled to a second power supply. The transistor component has a control terminal coupled to the second terminal of the first resistor component and the first terminal of the second resistor component, a second connection terminal coupled to the first power supply, and a first connection terminal for outputting a first detecting signal. The level shifter adjusts a voltage level of the first detecting signal to generate a second detecting signal.03-10-2011
20110150138HIGH LINEARITY MIXER AND DIRECT CONVERSION RECEIVER USING THE SAME - A direct conversion receiver includes: a high linearity mixer device including a sampler unit charge-sampling an input current according to a sampling frequency, and a buffer unit receiving an output signal from the sampler unit while having a low input impedance, amplifying the received signal, and outputting a current signal; and a filter device decimating an output signal from the mixer device and FIR-filtering the decimated signal.06-23-2011
20110150137ARCHITECTURE OF MULTI-POWER MODE SERIAL INTERFACE - In one embodiment of an architecture of multi-power mode serial interface, the architecture comprises two I/O ports, and a driver and receiver circuit. In the driver and receiver circuit, at least a multi-mode driver generates a group of signals with different currents or voltages to drive the two I/O ports, according to control signals of different transmission modes. A multi-mode terminator circuit provides different terminal impedances, according to control signals of different transmission modes. At least a receiver receives signals from the two I/O ports and shunt from the multi-mode terminator circuit. Wherein, the different transmission modes at least include a USB compatible mode.06-23-2011
20100322351Channel State Information Feedback for Coordinated Multiple Points Transmission - In accordance with an embodiment of the present invention, a method for providing wireless communication system includes receiving a reference signal from each base station of a plurality of base stations serving a mobile station. The received reference signals are measured to compute a single cell feedback matrix and a combining matrix for each channel between the plurality of base stations and the mobile station. A channel state information is generated having information about the combining and the single cell feedback matrices. The channel state information is transmitted to the plurality of base stations.12-23-2010
20110249774Partial Response Equalizer and Related Method - A multi-phase partial response receiver supports various incoming data rates by sampling PrDFE output values at a selected one of at least two clock phases. The receiver includes a calibration circuit that performs a timing analysis of critical data paths in the circuit, and this analysis is then used to select the particular clock phase used to latch the output values. These techniques permit the multiplexer outputs from for each phase of the partial response receiver to directly drive selection of a multiplexer for the ensuing phase, i.e., by avoiding regions of instability or uncertainty in the respective multiplexer outputs.10-13-2011
20110249773APPARATUS AND METHOD FOR ESTIMATING CHANNEL IN WIRELESS COMMUNICATION SYSTEM - An apparatus method of estimating a channel in a wireless communication system are provided. The method includes determining channel estimation values of pilot tones, selecting data tones to which a first estimation scheme is applied, according to frequency selectivity and time-axis variance of the channel, determining channel estimation values of the selected data tones according to the first estimation scheme by using the channel estimation values of the pilot tones, and determining channel estimation values of the remaining data tones according to a second estimation scheme by using the channel estimation values of the pilot tones and the channel estimation values determined by the first estimation scheme.10-13-2011
20110150135ELECTROSTATIC DISCHARGE CIRCUITRY WITH DAMPING RESISTOR - An apparatus formed on a substrate includes a pad, electrostatic discharge circuitry, and a metal damping resistor connected between the pad and the electrostatic discharge circuitry.06-23-2011
20110150139CALIBRATION METHOD FOR Tx/Rx PATH CHARACTERISTIC OF CHANNEL SOUNDER - The method includes performing a wired back-to-back test by forming M wired paths connecting one of the N transmission antennas with the M reception antennas through M cables, separating i06-23-2011
20090110115METHOD AND APPARATUS FOR DATA RECOVERY - A method for recovering data includes oversampling an input data signal to provide sample sets, and storing a plurality of sample sets in addressable memory. The sample sets are processed, using sequential logic to make determinations of respective samples suitable for use in data recovery from corresponding sample sets. One function applied for the determination, includes taking a first mean transition position in a first group of sample sets, taking a second mean transition position in a second group of sample sets, computing a slope value for change in transition position, and making the determination based on the order of the plurality of samples, the first and second means, and the slope. The determined samples are obtained and data recovery is achieved. Sample sets can be modified according to equalization functions. Other modifications include encoding the sample sets for data compression.04-30-2009
20080267319DIRECT CONVERSION RF TRANSCEIVER FOR WIRELESS COMMUNICATIONS - A single chip radio transceiver includes circuitry that enables received wideband RF signals to be down converted to base band frequencies and base band signals to be up converted to wideband RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry includes a low noise amplifier, automatic frequency control circuitry for aligning the LO frequency with the frequency of the received RF signals, signal power measuring circuitry for measuring the signal to signal and power ratio and for adjusting frontal and rear amplification stages accordingly, and finally, filtering circuitry to filter high and low frequency interfering signals including DC offset.10-30-2008
20110255639QUANTIZATION DEVICE, RADIO-FREQUENCY RECEIVER COMPRISING SUCH A DEVICE AND QUANTIZATION METHOD - This device for quantization of an analogue signal, called the input signal, includes an electronic circuit, called the sign analysis circuit (10-20-2011
20110164703RECEPTION APPARATUS AND METHOD, PROGRAM AND RECEPTION SYSTEM - Disclosed herein is a reception apparatus, including: a reception section configured to receive an OFDM (Orthogonal Frequency Division Multiplexed) signal obtained by modulating a common packet sequence configured from a packet common to streams and a data packet sequence configured from packets individually unique to the streams; a time counting section configured to count, using predetermined time indicated by additional information added to particular packets of the common and data packet sequences obtained by demodulating the received OFDM signal as a reference, elapsed time after the predetermined time; a detection section configured to compare the counted time and time indicated by the additional information added to the particular packets of the common and data packet sequences to detect a displacement in the time direction between the packets; and a correction section configured to correct the displacement between the packets of the common and data packet sequences in the time direction.07-07-2011
20110255638CHANNEL ESTIMATION FOR EQUALIZER USING SERIAL LOCALIZATION WITH INDECISION - In a receiver with a multi-stage equalizer, such as an SLI equalizer, cumulative symbol estimates generated in one or more early stages of the equalizer are used as effective pilot symbols to improve channel estimation for later stages.10-20-2011
20100284494BLIND CARRIER TRACKING LOOP - A receiver is an ATSC (Advanced Television Systems Committee)-receiver and comprises a phase lock loop (PLL) for performing carrier tracking of a carrier in a received signal. The PLL includes a detector (11-11-2010
20100284495METHOD, DEVICE AND SYSTEM OF WIRELESS COMMUNICATION - Some demonstrative embodiments include devices, systems and/or methods of wireless communication. Some embodiments include a receiver to process a wireless transmission received via a plurality of receive antennas, the receiver including a joint beamforming-synchronization module to jointly determine both a synchronization-error value and a beamforming weight vector. Other embodiments are described and claimed.11-11-2010
20100284493DOWN-SAMPLED IMPULSE RESPONSE CHANNEL ESTIMATION - A method for deriving a channel transfer function from an Orthogonal Frequency-Division Multiplex (OFDM) signal received over a channel and having unmodulated sub-carriers and sub-carriers modulated with symbols, includes the steps of sampling the received OFDM signal at a sampling rate greater than the bandwidth of the OFDM signal, deriving from the sampled OFDM signal a set of time domain coefficients representative of the channel impulse response, and deriving from a subset of the set of time domain coefficients a channel transfer function in the frequency domain.11-11-2010
20100329389RECEPTION DEVICE, TRANSMISSION DEVICE, RADIO TRANSMISSION/RECEPTION SYSTEM, AND RADIO RECEPTION METHOD - Orthogonal converters perform orthogonal conversion on the N time-series data extracted from a received radio signal. Multi-user detectors extract transmitted signals from respective transmission devices, from the time-series data which has been subjected to the orthogonal conversion. Inverse orthogonal converters perform inverse orthogonal conversion on the extracted transmitted signal. Rectangular filter circuits remove Mh time-series data at the front end and Mt time-series data at the rear end, from the transmitted signal which has been subjected to the inverse orthogonal conversion, so as to extract Nw time-series data. Deinterleaver circuits deinterleave the aforementioned time-series data. Decoders decode the time-series data for output.12-30-2010
20110135038MULTIPLE DATA RATE COMMUNICATION SYSTEM - Seamless wideband support is afforded by utilizing split-band data streams. For wideband signals, the 8 kHz bandwidth is divided into a low band, with approximately 0-4 kHz bandwidth, and a high band, with approximately 4-8 kHz bandwidth. Narrowband functions and services operate on the low band, while wideband functions and services operate on both low and high bands.06-09-2011
20110135037METHOD, APPARATUS, AND SYSTEM FOR CONTROLLING STORAGE OF USER INPUT INFORMATION - A method, an apparatus, and a system for controlling storage of user input information are disclosed. The method includes: obtaining Dual Tone Multi-Frequency (DTMF) digit mask control information which indicates whether DTMF digit information is suitable for storage; and deciding, when receiving DTMF digit information, whether to store the received DTMF digit information according to the obtained DTMF digit mask control information. In this way, the DTMF digit mask control information controls whether to store the user input information on the DTMF digit information processing device in the architecture with the service function being separated from the bearing function, thus avoiding information security risks brought by indiscriminate storage of sensitive contents in the user input information.06-09-2011
20110135036IQ-Imbalance Compensation in Presence of Carrier Offset - An arrangement for processing a received wireless communication signal is disclosed. The arrangement comprises a frequency offset compensation unit (06-09-2011
20110129036FM detector, signal interpolation method, and related program - A received FM wave signal is subjected to quadrature detection to generate baseband I and Q signals. The baseband I and Q signals are converted into a sequence of samples of phase information. An FM-detection-result signal is generated in response to a variation between two successive samples of the phase information. A power of the baseband I and Q signals is computed. A decision is made as to whether the baseband I and Q signals are valid or invalid by referring to the computed power and at least one threshold value. Signal interpolation is implemented with respect to the FM-detection-result signal in cases where it is decided that the baseband I and Q signals are invalid.06-02-2011
20100226460TUNER UNIT INCLUDING A PLURALITY OF TUNER CIRCUITS - A tuner unit includes a case, first and second antenna terminals, a first tuner circuit for digital terrestrial broadcast reception, a second tuner circuit for digital satellite broadcast reception, and a plurality of external pins. The first and second antennal terminals are arranged in a line along a first straight line, and the plurality of external pins are arranged in a line along a second straight line parallel to the first straight line. A signal in the first tuner circuit flows in a direction from the first antenna terminal toward the second antenna terminal, and a signal in the second tuner circuit flows in a direction from the second antenna terminal toward the first antenna terminal. Consequently, reduction in size can be achieved while maintaining an interval between the first and second antenna terminals at a prescribed distance.09-09-2010
20080219382SIGNAL RECEIVING CIRCUIT TO TRANSMIT HIGH SPEED SIGNAL - A signal receiving circuit to transmit a high speed signal, includes a signal processing unit having a terminal resistor, a board unit having a signal transmitting unit to transmit an external signal to the signal processing unit and a parasitic capacitance offsetting unit which is formed on the board unit and to offset parasitic capacitance existing in the signal processing unit.09-11-2008
20110150140FRACTAL CURVE BASED FILTER - A filter includes a first port, a second port, a first fractal curve based filter element coupled to the first port, and a second fractal curve based filter element coupled to the second port. The first fractal curve based filter element has first electromagnetic properties and the second fractal curve based filter element has second electromagnetic properties. The first fractal curve based filter element is electromagnetically coupled to the second fractal curve based filter element to filter radio frequency (RF) signals.06-23-2011
20100215121RADIO COMMUNICATION DEVICE AND RADIO RECEPTION METHOD - A wireless communication apparatus having a plurality of antennas 08-26-2010
20100215122Receiving Circuit - A receiver is provided that has reduced power consumption and seldom operates erroneously. The receiver generally includes: an input circuit or photoreceptor that receives a modulated digital signal that can includes a preamble; a detector that detects the received digital signal and outputs a baseband signal; a comparator that compares baseband signal and a reference signal; an integration circuit that integrates baseband signal; hysteresis circuits that generates voltage signals based on an average value signal from integration circuit; a multiplexer that selects between the signals from the hysteresis circuits based on a digital output signal from comparator; and a pulse detection counter that counts the number of pulses of the digital signal from comparator and outputs a count signal to one of the hysteresis circuits.08-26-2010
20100215124APPARATUS AND OPERATING METHOD OF DIGITAL RF RECEIVER IN A WIRELESS COMMUNICATION SYSTEM - An apparatus and an operating method of a digital Radio Frequency receiver in a wireless communication system are provided. The digital RF receiver includes a digital signal processor for outputting information of a receive frequency band, and an Analog-Digital Converter for filtering a signal of the receive frequency band from an RF analog signal input and converting the filtered signal to a digital signal.08-26-2010
20100215123WIDEBAND DIGITALLY-CONTROLLED OSCILLATOR (DCO) AND DIGITAL BROADCASTING RECEIVER HAVING THE SAME - A wideband digitally-controlled oscillator (DCO) is provided. The wideband DCO includes an active element which is driven by a first digital control signal; a single inductor which is connected to the active element in parallel, and comprises fixed inductance; and a plurality of capacitors which are connected to the single inductor in parallel, and vary operating frequency by being selectively turned on or off by a second digital control signal. Accordingly, the wideband DCO capable of operating in a wideband frequency range using a single inductor is provided, and if the wideband DCO is implemented using a single integrated circuit (IC) chip, the size of chip is reduced as the single inductor is used.08-26-2010
20110176637Telecommunication Method and Apparatus - Methods of transmitting and receiving information in a telecommunications network are described, as well as a telecommunication network and apparatus for a telecommunication network. The method of transmitting comprises identifying (S07-21-2011
20100166112INTEGRATED MICRO-SAMPLING WIRELESS RECEIVER - Disclosed are methods and systems for filtering an intermediate frequency (IF) band when digitizing a radio frequency (RF) signal using a higher Nyquist zone several times above the sampling rate. Undersampling may be employed along with an undersampled Nyquist filtering technique to implement an integrated receiver for base station applications such as wireless base station beacon monitoring. Such a receiver may be integrated into a smaller package and consume less power at a reduced cost. In one embodiment, the receiver may operate at a high RF sampled frequency that is microsampled in the 1007-01-2010
20100166113RECEIVER STATE ESTIMATION IN A DUTY CYCLED RADIO - A method for receiver state estimation includes communicating, from a first communications device to a second communications device, a first plurality of wake-up frames; receiving, at the first communications device from the second communications device, an indication of a received wake-up frame of the communicated first plurality of wake-up frames; determining, by the first communications device, a time at which the second communications device is in a ready state based on the received indication; subsequently communicating, from the first communications device to the second communications device, a second plurality of wake-up frames. The first plurality is greater than the second plurality, the reduction in number from the first plurality to the second plurality being based on the determined time at which the second communications device is in a ready state.07-01-2010
20110051849RADIO-RECEIVER CIRCUIT - A radio-receiver circuit having an analog-to-digital conversion unit. The analog-to-digital conversion unit comprises an analog-to-digital converter (ADC) and a filter operatively connected to an input terminal of the ADC in a receive path of the radio-receiver circuit. The radio-receiver circuit further comprises a control unit adapted to receive control data and determine, based on the control data, a frequency band in which data is to be transmitted to the radio-receiver circuit during a subsequent time interval. Furthermore, the control unit is operative to adapt at least one frequency characteristic of the analog-to-digital conversion unit to the determined frequency band for receiving said data transmitted in said subsequent time interval.03-03-2011
20110051848METHOD FOR TRANSMITTING SYSTEM INFORMATION - A method for configuring system information, a method for transmitting system information, and a method for transmitting resource ratio information are disclosed. A method for receiving system information elements includes receiving a first message including a fixed-size system information element from a base station, and receiving a second message including an variable-size system information element from the base station.03-03-2011
20110051847METHOD FOR ESTIMATING AND CORRECTING A DRIFT BETWEEN CLOCKS OF A RECEIVING TRANSCEIVER AND A CORRESPONDING EMITTING TRANSCEIVER, AND RECEIVER FOR IMPLEMENTING SAID METHOD - Method for estimating and correcting a frequency offset between a local clock of a receiving transceiver and a remote clock of an emitting transceiver comprises receiving by said receiving transceiver, a signal emitted by the emitting transceiver, said signal lacking a continuous sinusoidal carrier and having at least one symbol, each symbol being emitted within a time frame having a first duration; sampling the signal by taking for each time frame a set of energy measurements of said signal; forming a matrix representative of said energy measurements; determining from said energy matrix, points of maximum of energy within each time frame; determining a line connecting a plurality of said points within each of said time frames; determining a slope of said line; calculating a frequency offset between the clocks of the emitting and receiving transceivers using the slope; and adjusting the receiving transceiver's clock frequency according to the frequency offset.03-03-2011
20110051846Processing EM Bands - Methods and systems for processing an electromagnetic (EM) band are disclosed, including receiving a digitized EM band comprising two or more channels where two or more of the channels comprise modulated information; receiving two or more selections of two or more of the channels from two or more users; and demodulating the information from the selected channels.03-03-2011
20110188609RADIO RECEIVER - A radio receiver for receiving an existing analog broadcast and a terrestrial digital radio broadcast transmitting digital signals, the receiver having a plurality of antennas 08-04-2011
20110188608SEMICONDUCTOR INTEGRATED CIRCUIT AND BROADCAST RECEIVER - A semiconductor integrated circuit for broadcast receivers, which integrates an RF circuit, a mixer, an IF circuit, and an intermediate-frequency signal processing circuit onto a single chip, additionally includes a second RF circuit whose input terminal is grounded through an impedance equivalent to or almost the same as the output impedance of an antenna circuit, and a second mixer downstream of the second RF circuit. The second RF circuit and the second mixer each has an input impedance equivalent to that of the received signal subsystem; therefore, a spurious component equivalent to the spurious component contained in the output signal of the received signal subsystem is detected in the second RF circuit and in the second mixer, and cancels out the spurious component contained in the output signal of the received signal subsystem. Accordingly, the effects of noise due to spurious can be effectively reduced.08-04-2011
20110188607Simplified high frequency tuner and tuning method - A disdosed method tunes a signal from a channelized spectrum having a predetermined channel spacing. A signal of interest having a predetermined maximum bandwidth is mixed with a local oscillator signal, which has a frequency that is an integer multiple of the channel spacing or one-half of a channel spacing displaced from an integer multiple of the channel spacing. The local oscillator signal is selected to frequency translate the signal of interest to within a near-baseband passband whose lower edge is spaced from DC by at least about the maximum bandwidth of the signal of interest. Problems associated with 1/f noise, DC offsets, and self-mixing products are avoided or substantially diminished. Other methods and systems are also disclosed.08-04-2011
20110188606Apparatus for receiving differential signal using a differential amplifier - The invention relates to a receiver for a differential data bus with two resistive branches (08-04-2011
20090175382PROCESS FOR RECEIVING A BROADBAND ELECTROMAGNETIC SIGNAL - In a process for receiving a broadband electromagnetic signal, the receiving spectrum is divided into n partial spectrums (n>1), which are subjected to parallel further processing in n channels. The resulting n partial signals are then demodulated into the base band, digitized by n equal-type analog-to-digital converters, and spectrally transformed by a fast Fourier Transform. Interfering edge effects at the transition to the respectively adjacent channel are compensated by amplitude and phase correction of the n partial signals for compensating. Finally, the partial spectrums of the n partial signals are integrated to form a total spectrum in the frequency domain.07-09-2009
20090175383Wireless Communication Using Beam Forming And Diversity - A method and apparatus for wirelessly transmitting real-time data streams is described. To ensure continuous data flow, fast diversity and slow diversity can be used. Fast diversity chooses a receive antenna based on received signal parameters, such as signal strength, during the transmission header and prior to information transfer. Slow diversity stores received signal parameters from previous packets, associates the parameters with a selected antenna, and uses the parameter history to denote a “default” antenna. Additionally, receive and/or transmit beam forming can be used to maintain continuous communication between stations. Beam forming, which combines antenna signals to maximize performance, is possible when at least two transmit/receive signal processing chains are available.07-09-2009
20090175381DIGITAL RECEIVER FOR REACTIVE RADIO - A digital receiver is disclosed. In one aspect, the receiver includes a receiving module for receiving packetized data. The receive may further include a first processing module for packet detection having a first programmable processor. The receiver may further include a second processing module for demodulation and packet decoding having a second programmable processor. The receiver may further include a first digital receive controller having a third processor arranged for being notified of detection of data by the first processing module and for activating the second processing module.07-09-2009
20100061484MIMO OFDM SYSTEM - A MIMO OFDM system includes a plurality of space-time encoders for encoding respective data blocks with independent space-time codes. The transformed data block signals are transmitted by a plurality of transmit antennas and received by a plurality of receive antennas. The received data is pre-whitened prior to maximum likelihood detection. In one embodiment, successive interference cancellation can be sued to improve system performance. Channel parameter estimation can be enhanced by weighting the channel impulse response estimates based upon a deviation from average.03-11-2010
20100027715DETERMINING SCAN STRATEGY FOR DIGITAL CARD - A method is provided for determining a scan strategy to receive data for a digital unit associated with an electronic support measure receiver. The receiver scans a surrounding environment to detect and receive emitted signals while utilizing the digital unit to improve emitter identification. The digital unit is provided with the data according to requirements of digital signal processing algorithms implemented by the unit.02-04-2010
20110216855RECEIVER ARCHITECTURES FOR DIGITAL RADIO BROADCASTS AND ASSOCIATED METHODS - Receiver architectures and related methods are disclosed for high definition (HD) and digital radio FM broadcast receivers. The radio receiver architectures are configured to utilize multiple analog-to-digital converters (ADCs) to handle the digital radio spectrum and can be configured to modify a target IF frequencies depending upon the mode of operation of the receiver. For example, the receiver can include an analog FM reception mode and a digital FM reception mode for which different down-conversions are used for the same analog-plus-digital audio broadcast channel. If desired, the radio broadcast receivers disclosed can be configured so that they only receive digital FM radio content, for example, if the analog FM broadcast was of no interest and/or if the broadcast was all digital.09-08-2011
20110216853SYSTEMS AND METHODS FOR SLIDING CONVOLUTION INTERPOLATING FILTERS - Certain embodiments of the invention may include systems and methods for implementing a multirate digital interpolating filter. According to an example embodiment of the invention, the method includes sampling symbol data from one sample per symbol to N samples per symbol, wherein sampling includes: convolving the symbol data with a decimated finite impulse response (FIR) aperture impulse response coefficient set, convolving the symbol data with one or more shifted decimated FIR aperture impulse response coefficient sets, and summing the convolution results to produce interpolated bandlimited data.09-08-2011
20120307939ESTIMATION OF CHANNEL IMPULSE RESPONSE IN A COMMUNICATION RECEIVER - Embodiments herein provide using extreme value theory (EVT) as a diagnostic to decide which taps are significant. In the low SINR scenario, embodiments herein also provide the following options; i) Fix the model order to a finite value smaller than the model order assumed for the initial CIR estimate. In the case of OFDM based systems, the model order of the CIR is fixed to a value much smaller that the cyclic prefix length. ii) Use the EVT based method to detect significant tap locations and only keep those tap locations such that the CIR length is again restricted to a value smaller than the model order of the initial channel estimate.12-06-2012
20120147995Receiver - A receiver includes a plurality of receive antennas configured to receive radio signals from a plurality of transmit antennas, and a plurality of sets of RAKE fingers configured to generate first signals, wherein each set of RAKE fingers is coupled to a respective one of the plurality of receive antennas. The receiver further includes a weighting factor generator configured to generate weighting factors for weighting the first signals, wherein at least one of the weighting factors is generated by using first signals that are generated by at least two of the plurality of sets of RAKE fingers and received from at least two of the plurality of transmit antennas.06-14-2012
20090034657ELECTROMAGNETIC WAVE-POTENTIAL COMMUNICATION SYSTEM - A wave-potential detector and a wave-potential radiator are provided that detect and radiate wave-potential signals having longitudinally polarized A vectors, respectively. Wave-potential receivers and transmitters incorporating the wave-potential detector and wave-potential radiator, respectively, are also provided. The wave-potential detector includes a biased plasma device, having at least a portion of its bias current that is parallel to the direction of propagation of a wave-potential signal having a longitudinally polarized A vector. Both omnidirectional and directive wave-potential radiators are provided.02-05-2009
20100128818FFT PROCESSOR - An N-point FFT processor 05-27-2010
20110305301BROADCAST RECEIVING APPARATUS AND BROADCAST RECEIVING METHOD - A broadcast receiving apparatus receives digital broadcast and analog broadcast including same broadcast contents simultaneously, and outputs the analog broadcast while the reception state of the digital broadcast worsens, thereby reduces uncomfortable auditory sensations caused by output switching from one type of broadcast to another type of broadcast. The broadcast receiving apparatus is configured to perform control to bring the acoustic characteristic of pre-switching broadcast closer to the acoustic characteristic of post-switching broadcast based on received field strength of analog broadcast signals when the output is switched from one broadcast to another broadcast.12-15-2011
20120039418Dual Channel Reception - There is provided a solution for simultaneous reception of dual channel transmission. The solution is based on applying a first and a second oscillating signals, mixing and adding in order to separate the in-phase and quadrature components of first and second signal from a combined radio frequency signal received as input.02-16-2012
20080232511COMBINED MIXER AND POLYPHASE DECIMATOR - Some embodiments discussed relate to an apparatus and method for processing signals, comprising receiving an input signal and forming a stream of digital samples of the input signal by sampling at a sampling frequency and mixing the stream of digital samples using a mixer sequence having a sine sequence and a cosine sequence based on the sampling frequency to generate an input sequence, each of the sine sequence and the cosine sequence including a plurality of components in an arrangement such that at least one of the components has a zero value and the remaining components has a non-zero value, and filtering the input sequence using a plurality of polyphase filter parts, each corresponding to the non-zero components of the sine sequence and the cosine sequence, and selectively combining the outputs of the polyphase filter parts to generate an in-phase sequence and a quadrature sequence.09-25-2008
20120039417BAND PASS SAMPLING RECEIVER - Provided is a band pass sampling receiver which performs a sampling operation to a combined signal of RF signals of different frequency bands. The band pass sampling receiver performs the sampling operation by applying a sampling rate having a time lag to a combined signal of first and second RF signals of different frequency bands. And, by using a result of the sampling operation and first and second interpolant functions, the first and second RF signals are separated from each other. Herein, the first and second interpolant functions are determined based on the time lag, the sampling rate and frequency bands of the first and second RF signals.02-16-2012
20090196375Supply independent Schmitt trigger RC oscillator - Embodiments of the present invention provide an oscillator circuit having a steady output frequency that is independent of the supplied voltage. This oscillator includes a Schmitt trigger circuit which may be implemented within an integrated circuit of a wireless terminal or other like portable electronic device. The Schmitt trigger circuit receives a threshold voltage input and a second voltage input. The Schmitt trigger circuit generates an output voltage equal to either a first output voltage or a second output voltage based on the results of comparing the threshold voltage input to the second voltage input. An RC network may be coupled to the output of the Schmitt trigger circuit and is operable to supply the second voltage input to the Schmitt trigger circuit. A voltage divider network also couples to the output of the Schmitt trigger circuit wherein the threshold voltage input is proportional to the first output voltage reduced by the voltage divider network based on the output voltage of the Schmitt trigger circuit.08-06-2009
20090220028CALIBRATED PULSED SERIAL LINK - Circuitry for decoding data from a pulsed signal received on a single line, the circuitry comprising receiving means for receiving a first edge and a second edge on the single line, the first and second edges being separated by a time period, the time period representing said data; decode circuitry comprising determining means arranged to determine a value of the time period and decoding means arranged to decode said data based on said determined value of the time period; a memory arranged to store a reference value; and calibration means for calibrating said decode circuitry based on a comparison between said determined value of the time period and said reference value, wherein the determining means comprises a plurality of sampling units for sampling said pulsed signal at different times, and selection means for selecting the output of one of said sampling units to decoded.09-03-2009
20110317789DIGITAL RECEIVERS - The application describes digital receivers and operation thereof with improved recovery of a received signal. A clock generator (12-29-2011
20090010361METHOD AND APPARATUS FOR LOCATIONING USING THE GUARD INTERVALS OF TDS-OFDM DIGITAL TELEVISION SIGNALS - A TDS-OFDM receiver for positioning using guard intervals comprising PN sequences is provided. The receiver comprises the step of calculating a transmission time of at least one PN among a plurality of PNs in a digital television (DTV) signal or information originating from a transmitter and transmitted to a mobile receiver.01-08-2009
20120207244INPUT DEVICE RECEIVER PATH AND TRANSMITTER PATH ERROR DIAGNOSIS - An input device comprises a processing system coupled with a plurality of receiver paths. The processing system comprises a first capacitor and a bypass switch. The first capacitor is configured to be selectively coupled with the plurality of receiver paths. The bypass switch is configured for bypassing the first capacitor. The processing system is configured to selectively couple a first receiver path of the plurality of receiver paths with the first capacitor; acquire a measurement of a first resulting signal from at least one of the first receiver path or a second receiver path of the plurality of receiver paths while the first receiver path is coupled with the first capacitor and while the bypass switch is not bypassing the first capacitor; and determine whether the first receiver path is ohmically coupled with the second receiver path based on the measurement of the first resulting signal.08-16-2012
20120008719DIGITAL BROADCAST RECEPTION APPARATUS - An object of the present invention is to provide a digital broadcast reception apparatus that allows a stable viewing even if a reception environment changes along with a movement. In the present invention, based on current position information indicating a current position detected by a current position detection section and broadcast area information stored in a broadcast area information storage section, a search-mode switching control section instructs a tuning control section to select a diversity operation mode if the current position is close to a boundary of a broadcast area, and select an independent reception operation mode if the current position is not close to the boundary of the broadcast area. In the diversity operation mode, a first system and a second system are tuned to the same physical channel, and cooperate with each other to demodulate a digital broadcast signal and a make an output through a diversity process. In the independent reception operation mode, the first system and the second system individually and independently demodulate the digital broadcast signal and make an output01-12-2012
20120014478ADVANCED LLR PROCESSOR FOR WIRELESS TELECOMMUNICATION SYSTEM - A method and system for processing LLRs, in a receiver, of transmissions over a wireless telecommunication system, the method including receiving multiple soft symbols, selecting a set of appropriate instructions for LLR calculation for the soft symbols, arranging the soft symbols in a register of a processor according to the selected instructions, selecting an appropriate single instruction from the set of instructions to be implemented by the processor using the soft symbols in the register as operands, and calculating, by a computation unit, multiple LLR values for the multiple soft symbols, in parallel, by means of the selected instruction.01-19-2012
20110064164Apparatus And Method For Transceiving Downlink Control Information - A method and apparatus for transceiving Physical hybrid-ARQ indicator channel in a wireless mobile communication system using multi-carriers is disclosed. This method comprises a first reception step of receiving signaling information indicating that a number (N1) of first downlink channels allocated to the first frequency band is 0 through the second frequency band, and a decision step of deciding the number (N1) of first downlink channels allocated to the first frequency band to be 0.03-17-2011
20120250794System and method for effectively implementing a unit GM cell - An apparatus and method for effectively implementing a unit Gm cell includes an input P that receives an input P signal and an input N that receives an input N signal. The unit Gm cell further includes an output P that generates an output P signal that is connected through a first bias resistor to the input N. The unit Gm cell also includes an output N that generates an output N signal that is connected through a second bias resistor to the input P. The unit Gm cell features level-shifting resistors that cause the output P signal and the output N signal to be at different respective voltage levels. A Vcore supply voltage may thus be reduced by a voltage potential across the level-shifting resistors to operate the unit Gm cell with a reduced Vcore supply voltage.10-04-2012
20120063548DIGITAL RECEIVER AND METHOD - A receiver and method is provided for sigma-delta converting an RF signal to a digital signal and downconverting to a digital baseband signal. The RF signal is split into N phases, as can be accomplished using a sample and hold circuit, and each phase is digitized, as can be accomplished using an analog-to-digital (A/D) sigma-delta converter. Polyphase decimation techniques and demodulation are applied to the phased signals to generate a demodulated digital signal. The demodulated digital signal is further downconverted to the appropriate baseband signal.03-15-2012
20120063546PHASE-LOCKED LOOP CIRCUIT - A voltage-controlled oscillator generates a first signal and a second signal having a phase reverse to that of the first signal. A switch supplies a current signal generated by a first charge pump to a loop filter. A counter counts a cycle number of the second signal included in one cycle period of a reference signal. A second charge pump supplies, to the loop filter, a first current signal having a constant value and a second current signal having a constant value whose polarity is reverse to that of the first current signal. The control circuit controls the switch and the second charge pump based on a comparison between the cycle number of the second signal counted by the counter and a value X.03-15-2012
20120027128Phase Aligned Sampling of Multiple Data Channels Using a Successive Approximation Register Converter - Provided is a method for processing data samples from a plurality of data channels. The method may include obtaining a plurality of data samples from the plurality of data channels. Obtaining the plurality of data samples may involve successively obtaining a data sample from each data channel of the plurality of data channels. Successively obtaining a data sample from each data channel may be performed a plurality of times during a specified time period. Each data sample of the plurality of data samples may be associated with a respective sample time, and each respective sample time may be relative to a single specified reference point in time. The method may further include, for each data sample of the plurality of data samples, determining a time-dependent coefficient value that may correspond to the sample time associated with the data sample, and applying the determined time-dependent coefficient value to the data sample.02-02-2012
20120063547RECEIVER AND METHOD FOR DETERMINING A TIME MEASURE DEPENDING ON A TIME OF ARRIVAL OF A PULSE SIGNAL - A receiver for determining a time measure depending on a time of arrival of a pulse signal having a sequence of pulses from a transmitter includes an integrator having a variable and controllable integration window, extending from a starting point to an integrator sampling point, an integrator controller for controlling the integration window in a time-successive way so that the sampling points of successive integration windows are changed by a time delay from a current integration window to a later integration window, wherein the time delay is smaller than half of the integration window, and an output processor for generating the time measure as an indication indicating which later integration window has a sampled integrator value exceeding a threshold or being larger than a sampled integrator value for a timely preceding or timely succeeding integration window.03-15-2012
20090135952Portable Terminal Having Automatic Searching Function For Broadcasting Channel And Method For Searching Broadcasting Channel Automatically In Portable Terminal - A portable terminal having a function for automatically searching for a broadcasting channel, which may automatically set the broadcasting channel according to variation of a broadcasting zone, and a method of automatically searching for a broadcasting channel in a portable terminal are disclosed. A wireless transceiver receives a system information from a base station, and a controller obtains a receivable broadcasting channel based on the system information. Accordingly, the broadcasting channel may be automatically searched based on the location of the portable terminal, and users desired broadcasting channel may be represented.05-28-2009
20090135951METHOD AND APPARATUS FOR POWER CONTROL TECHNIQUES IN AN OFDM BASED RECEIVER - A method comprising the steps of: providing a receiver based on synchronous, sequential, digital design techniques, wherein the receiver is subdivided into stages or sub-devices; providing a primary reset, which initializes the receiver to a known state; and providing a primary clock for changing the known state based on other inputs to the receiver. An OFDM receiver comprising: a primary reset, which initializes the receiver to a known state; and a primary clock for changing the known state based on other inputs to the receiver, wherein the receiver is divided into a plurality of sub-devices forming a sequential device; and a control signal for overriding the primary clock and holding a plurality sequential elements in a reset state.05-28-2009
20120207245DIGITAL BROADCAST APPARATUS AND DIGITAL BROADCAST RECEIVING METHOD - A digital broadcast receiving apparatus includes a receiving unit configured to receive a digital broadcast signal in which predetermined data is transmitted repeatedly. A transmission time estimating unit estimates a transmission time for transmitting data per transmission unit, by analyzing separation information contained in the digital broadcast signal where the separation information describes a time for the transmission unit of data corresponding to the predetermined data. A determining unit determines whether content of the predetermined data has been updated for each data reception starting time after the transmission time has been estimated. If the content has not been updated, the control unit inhibits reception processing by the receiving unit for a predetermined period of time based on the estimated transmission time, and if the content has been updated, the control unit permits the reception processing by the receiving unit.08-16-2012
20120300880METHOD AND SYSTEM FOR RECEIVING RADIO STATIONS - A system for receiving radio stations includes: at least one A/D converter in order to digitize the entire desired frequency band, for instance, an FM band, received via at least one antenna, and a demodulation unit for demodulating at least two signals of different transmitting frequencies of a radio station.11-29-2012
20100172440METHOD AND APPARATUS FOR ACHIEVING SELECTED AUDIO AND OTHER FUNCTIONS - A method and apparatus are provided for reproducing an audio signal. The audio signal may be a digital input with each segment of the signal being broadcast at least two times, which broadcast transmissions are at time spaced intervals. The time spaced transmissions are stored in at least one RAM, and the multiple transmissions are processed to obtain an enhanced output for each segment, which is applied to an audio receiver for reproduction. For example, the multiple transmissions for each segment may be compared, and the best transmission for the segment selected as the enhanced output for the segment.07-08-2010
20110103517DISTANCE ESTIMATION - A method, comprising: periodically enabling reception of a signal at a receiver, every first time; transforming the received signal in order to determine data in the received signal; comparing the determined data with reference data; and using the difference between the determined data and the reference data to estimate a correction to a multiple of the first time in order to determine a distance between the receiver and an origin of the signal.05-05-2011
20120121042CONFIGURATION CONTROLLER FOR RECEIVER - A configuration controller generates one or more control signals based on channel data. The channel data includes requirements data received via the stream of inbound data, wherein the requirements data includes at least one of: a quality of service requirement, and a signal latency limit. A receiver includes an RF receiver section and a receiver processing module that are configured in response to the control signal.05-17-2012
20120121041SERIAL DATA INTERFACE FOR SOFTWARE-DEFINED RADIO SYSTEM - A radio system comprises a front-end receiver for receiving a RF signal and converting the RF signal into a digital payload signal. The system further comprises a base-band processor for processing the digital payload signal, and a serial data interface over which the front-end communicates the digital payload signal and meta data to the base-band processor. The meta data may comprise information indicating whether a corresponding digital payload signal communicated over the serial data interface is valid and additional information of the front-end status, e.g. gain or state of tuning.05-17-2012
20100290564RECEPTION DEVICE AND RECEPTION METHOD - A reception device includes a replica signal generating unit which generates a replica signal which is a replica of a transmitted signal based on a received signal, a time period setting unit which sets a plurality of time periods which time period of the received signal is divided into based on a received power of the received signal, an arrival wave removing unit which removes an arrival waves from the received signal for each time period set by the time period setting unit using the replica signal generated by the replica signal generating unit, a combining unit which combines the signals that the arrival waves are removed by the arrival wave removing unit from the received signal for each time periods set by the time period setting unit; and a demodulation processing unit which performs a demodulation process for the signal combined by the combining unit.11-18-2010
20120163502APPARATUS AND METHOD FOR RECEIVING A SIGNAL - Provided are an apparatus and method for acquiring a signal to noise ratio (SNR) gain and a diversity gain using multiple antennas for receiving data, and an apparatus for receiving a signal using multiple antennas. The apparatus may receive on-off keying modulated signals through K receiving antennas, detect envelopes with respect to each of the signals received through the K receiving antennas, combine signals generated by performing a linear processing and a nonlinear processing with respect to each of the K detected envelopes, and determine a message value of the on-off keying modulated signals.06-28-2012
20120314812PHY sub-channel processing - Physical layer (PHY) sub-channel processing. A soft symbol decision stream is arranged into a number of sub-channels to reduce substantially the processing performed within a communication receiver on data that is not intended for that communication receiver. In other embodiments, a predetermined approach is employed to arrange the soft symbol decision stream into one or more frames; each frame may have one or more soft symbol blocks; and each soft symbol block may have one or more symbols. Each of the soft symbol blocks, within a frame, may be assigned to a sub-channel. Only the soft symbol blocks that contain information destined for the communication receiver need be decoded. Only the sub-channel that includes these soft symbol blocks, destined for this communication receiver, need be decoded. The soft symbol blocks not within the sub-channel may be discarded thereby recovering some of the processing capabilities of the communication receiver.12-13-2012
20100246721METHOD AND APPARATUS FOR EFFICIENT CONTROL DECODING FOR TRANSPARENT RELAYING OPERATION IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described herein that facilitate efficient control decoding to facilitate management of cooperative relay operation in a wireless communication environment. As described herein, a relay node (RN) and/or another entity cooperating with a serving network node for respective users in a potentially assisted group can prune a search space of control decoding candidates corresponding to the respective users. For example, respective control decoding candidates corresponding to, e.g., common and/or user-specific search spaces, aggregation levels, control channel sizes, etc., can be eliminated from a reduced control search space based on various criteria. Further, sets of control decoding candidates corresponding to respective users not schedulable at a given time interval can be eliminated. In addition, control search space pruning can be performed in addition to or in place of increased cyclic redundancy check (CRC) protection for control information, thereby further decreasing the probability of false control detection.09-30-2010
20100246720Channel Variation Detection of Wireless Channel for Adaptive Transmission Schemes - Techniques are provided to determine channel variation of a wireless channel between a first wireless communication device and a second wireless communication device. The first wireless communication device receives a wireless transmission sent by the second wireless communication device. Received data is recovered from the wireless transmission received at the first wireless communication device. The received data is processed with each of multiple channel variation compensations to produce corresponding processed received data subjected to respective ones of the multiple channel variation compensations. For symbols in the received data and in each of the processed received data, distances are computed to their closest symbols in a symbol constellation set used by the second wireless communication device in the wireless transmission. A corresponding distance metric is computed from the distances for symbols in the received data and from the distances for symbols in each of the processed received data. Thus, there is distance metric for the received data, and a distance metric for each of the processed received data. Channel variation of a wireless channel between the first wireless communication device and the second wireless communication device is estimated based on the distance metrics.09-30-2010
20120128100FREQUENCY SHIFT CIRCUIT AND COMMUNICATION DEVICE - A frequency shift circuit that shifts the frequency of an input signal using a rotor corresponding to a predetermined phase rotation amount, the frequency shift circuit includes a table look-up unit that includes a plurality of tables that store complex data and outputs the complex data for each table based on address information, a complex multiplication circuit that complex-multiplies the complex data which have been output from the table look-up unit for each table, a deletion circuit that generates a rotor corresponding to a phase rotation amount which is based on a result of complex-multiplication executed, and a calculation circuit that calculates the address information for each table such that exp (2 π j θ) is obtained as the result of complex multiplication executed based on rotation angle information θ.05-24-2012
20090022244Information processing apparatus and process execution method - An information processing apparatus is provided that executes a process sequence stored in a sequence table, based on a sequence code created for each process in the process sequence. The sequence code includes a process type that specifies a sequence table, a control target that specifies a control target, and a process number that specifies one particular process in the specified process sequence.01-22-2009
20100208845INTEGRATED RECEIVING CIRCUIT AND METHOD FOR RADIOFREQUENCY AND HIGH SPEED SIGNALS - Integrated receiving circuit for radiofrequency signals an amplifying element using the multiplication zone of a reverse biased semiconductor junction operating in Geiger mode for amplifying an input radiofrequency signal (Vin) and converting it into a digital signal. And a digital part for digitally processing the digital signal.08-19-2010
20110182383Template-based Estimation of Frequency Spectra - Estimating frequency spectrum for digital signals. A frequency spectrum for a digital signal is estimated using a stored template. A frame is received by a receiver on the network. A template is selected from a group of templates based on the received signal parameters, which may include modulation and coding, duration, channel and channel bandwidth, preamble type, beam-forming information, source identifier, and PHY rate. There may be a template for each combination, or a template for a set of related signal types. The template amplitude is scaled based on the signal strength of the received signal to create an estimate of the frequency spectrum, and may also be scaled on duration. The templates may be generated for example to represent IEEE 802.11 transmission modes and rates. Each template represents a frequency spectrum, as an example a FFT spectrum, taken at a specific signal strength. The duration of the frame is later used to calculate the spectrum duty cycle. Spectrum estimation may be performed on the receiver or the device hosting the receiver, with the estimated spectrum sent to a monitoring host, or the signal parameters, strength, and duration may be sent to the monitoring host where spectrum estimation is performed.07-28-2011
20120314811APPARATUS AND METHOD FOR A WIDEBAND RF MIXER - Apparatus and methods of manufacture for a wideband RF mixer are provided. The RF mixer includes an input, an LO input, and an output. A variable impedance tuner is disposed in an input signal path between the input port and the RF mixer, and a variable impedance tuner is disposed in an output signal path between the output and the RF mixer. The impedances of the variable impedance tuners are controllable for a particular frequency of operation with one or more digital or analog control signals.12-13-2012
20120213313ESTIMATING DOCUMENT SIMILARITY USING BIT-STRINGS - Each of a plurality of documents is divided into samples. Small bit-strings are generated for selected samples from each of the documents and used to create a sketch for each document. Because the bit-strings are small (e.g., only one, two, or three bits in length), the generated sketches are smaller than the sketches generated using previous methods for generating sketches, and therefore use less storage space. The generated sketches are compared to determine documents that are near-duplicates of one another.08-23-2012
20120134443Method for Improving Synchronization and Information Transmission in a Communication System - A method is provided for synchronization in a communication system. A receiver receives and processes a signal with a centrally symmetric part s(k) exploitable for synchronization. The signal is based on a uniquely identifiable sequence c(l) from a set of sequences exploitable for information transmission. The centrally symmetric part s(k) is centrally symmetric in the shape of absolute value thereof. The centrally symmetric part s(k) is of arbitrary length N, and the sequence c(l) is a Zadoff-Chu sequence.05-31-2012
20120163503Process for Estimating the Channel from the PSS Signal in a LTE Communication Network, and Receiver for the Same - A Method for estimating the channel in a Long Term Evolution (LTE) communication system, said method involving the step of extracting a Primary Synchronization Signal (PSS) from a received signal and further involving the step of spanning said PSS based Least Square (LS) channel estimation on the 64 sub-carriers so as to facilitate the MMSE channel estimation. Preferably, the spanning is performed by means of an interpolation of the particular sub-carriers which are not allocated to said PSS (#-32, d.c.) The method involves the steps of: —Perform LS channel estimation on the 62 sub-carriers containing the PSS (06-28-2012
20090060091LOW-POWER, LOW-AREA HIGH-SPEED RECEIVER ARCHITECTURE - A high-speed receiver includes multiple receiver components. Each receiver component includes sampling latches for receiving data, phase rotators for controlling timing of sampling of data by the sampling latches, and a clock-tracking logic stage for providing clock and data recovery. The clock-tracking logic stage is divided into a high-speed early/late (E/L) logic and aggregation counter section and a low-speed logic section, separated by a synchronization logic block. The receiver also includes a delay locked loop (DLL) for receiving an input clock signal corresponding to a data rate of the received data, providing coarse delay adjustment of the clock signal and outputting multiple clock phase vectors corresponding to the adjusted clock signal to the phase rotators on each receiver component. The phase rotators control sampling of the data based on the clock phase vectors received from the DLL. A single regulated power supply regulator regulates power supplied to the DLL and the phase rotators.03-05-2009
20120250796SYSTEMS, METHODS AND APPARATUS FOR DETERMINING CONTROL FIELD AND MODULATION CODING SCHEME INFORMATION - Systems, method and apparatus of managing wireless communication are described herein.10-04-2012
20120250797SIGNAL RECEIVING APPARATUS, SIGNAL RECEIVING METHOD AND SIGNAL RECEIVING PROGRAM - Disclosed herein is a signal receiving apparatus including: a data-loss detection section configured to detect a data loss from a received signal; and a timing adjustment section configured to adjust a processing timing by the quantity of the data loss on the basis of the detection result of the data loss.10-04-2012
20120170686MULTI-CHANNEL RECEIVER - This invention relates to a method, a computer program product, a device, and a system, wherein a receiver unit is configured to operate in a single-channel mode and in a multi-channel mode, wherein in the single-channel mode the receiver unit is configured to output exactly one channel of a received signal, and in the multiple-channel mode the receiver unit is configured to output at least two channels of the received signal.07-05-2012
20120170685Wireless Communication Using Beam Forming And Diversity - A method and apparatus for wirelessly transmitting real-time data streams is described. To ensure continuous data flow, fast diversity and slow diversity can be used. Fast diversity chooses a receive antenna based on received signal parameters, such as signal strength, during the transmission header and prior to information transfer. Slow diversity stores received signal parameters from previous packets, associates the parameters with a selected antenna, and uses the parameter history to denote a “default” antenna. Additionally, receive and/or transmit beam forming can be used to maintain continuous communication between stations. Beam forming, which combines antenna signals to maximize performance, is possible when at least two transmit/receive signal processing chains are available.07-05-2012
20120170684Method and System for Decoding OFDM Signals Subject to Narrowband Interference - A method estimates a wireless channel at a receiver. The signal is transmitted using narrowband orthogonal frequency division demultiplexing (OFDM) and frequency subcarriers, and the signal includes a set of data tones and a set of pilot tones. The channel and pilot tone interference are estimated based on all the pilot tones extracted from the signal and a channel model. The set of data are equalized based on the channel estimate. Data interference is detected according to the pilot interference and the equalized data tones. Subcarrier interference-to-noise ratios are determined based on the data interference. Signal strengths of the data tones are determined based on the equalized data tones, log-likelihood ratios of bits represented by the data tones are determined based on the subcarrier interference-to-noise ratios and the signal strength of the data tones.07-05-2012
20120076242DIVERSITY RECEIVER - A diversity receiver includes a plurality of antennas to receive radio frequency signals. A plurality of receiver circuits are each coupled to a respective one of the plurality of antennas to process the received radio frequency signals, and a channel estimator is coupled to at least one of the receiver circuits to determine at least one of channel estimation values for the received radio frequency signals. A controller is coupled to the channel estimator and to at least one of the receiver circuits and selectively activates or deactivates the at least one receiver circuit based on the determined at least one channel estimation value.03-29-2012
20120177146DETECTING CIRCUIT AND RELATED DETECTING METHOD - A detecting circuit includes: a first offset generating circuit arranged to apply a first offset to an input signal pair comprising a positive input signal and a negative input signal and accordingly generate a first output signal pair comprising a first positive output signal and a first negative output signal; and a first sampling circuit coupled to the first offset generating circuit, the first sampling circuit arranged to sample a difference in voltage between the first positive output signal and the first negative output signal to generate a first sampling signal, wherein the first sampling signal is utilized to identify a data signal on the input signal pair.07-12-2012
20100272216APPARATUS AND METHODS FOR DIFFERENTIAL SIGNAL RECEIVING - A differential signal receiver 10-28-2010
20100272215Signaling with Superimposed Differential-Mode and Common-Mode Signals - A data receiver circuit (10-28-2010
20120177148Method and Apparatus for Peak-to-Average Ratio Reduction - Peak-to-average ratio reduction is achieved by detecting peaks in an original analog signal that exceed a given threshold. Segments of the original analog signal containing such peaks are treated (e.g., by attenuation) and a composite analog signal is assembled that includes treated and untreated segments of the original analog signal. The composite analog signal is processed to perform analog-to-digital conversion to generate a composite digital signal. Segments of the composite digital signal corresponding to the treated segments of the original analog signal are reverse-treated or otherwise treated again to undo treatment of the segments of the original analog signal. A final output digital signal is generated that corresponds to the original analog signal in digital form.07-12-2012
20120328051Secondary Channel Estimation - Some example embodiments may be directed towards improving a secondary system channel estimation by using a primary channel estimate. Specifically, some example embodiments may be directed towards a method in an user equipment, which may be comprised in a Radio Network, for estimating a primary and a secondary channel. The method may comprise receiving from at least one Base Station a combined wireless communication signal through at least a portion of the primary channel. The method may also comprise determining an estimation of the primary channel. The method may further comprise determining an estimation of the secondary channel. The method may further comprise determining at least one common sub-component between the estimations of the primary and secondary channels, and determining an updated estimation of the secondary channel based on the at least one common sub-component.12-27-2012
20120082266RECEPTION APPARATUS, RECEPTION METHOD, AND PROGRAM - Disclosed herein is a reception apparatus including: a reception block configured to receive broadcast content broadcast via a broadcasting network; an acquisition block configured to acquire inserted content that is inserted in the broadcast content during the reception thereof; an output block configured to output at least one of the broadcast content and the inserted content; a switch block configured to switch between the broadcast content and the inserted content outputted from the output block; and a buffer configured to sequentially store data of the received broadcast content when the broadcast content is switched to the inserted content; wherein, if the inserted content is switched to the broadcast content, the output block outputs the broadcast content from the buffer while the inserted content is outputted.04-05-2012
20110122974Signal Processing Device and Method - A processing device (05-26-2011
20110122973SYNTHESIZER AND RECEIVER USING THE SAME - A frequency synthesizer receives a frequency compensation signal and a reference oscillation signal from an outside, and outputs first and second signals to an outside. The reference oscillation signal has a varying frequency. The frequency synthesizer includes an oscillator for generating the first signal based on the reference oscillation signal, and a frequency divider/multiplier for outputting the second signal by frequency-dividing or frequency-multiplying the first signal. The varying frequency of the first signal is compensated by the frequency compensation signal. This frequency synthesizer suppresses frequency variations of the first and second signals even if the reference oscillation signal has a large frequency variation.05-26-2011
20120230450METHODS AND APPARATUS FOR CLOCK AND DATA RECOVERY USING TRANSMISSION LINES - A clock and data recovery circuit may comprise a first transmission line comprising a plurality of segments of a first predetermined length. The first transmission line receives and propagates a clock signal through the segments of the first predetermined length. The clock and data recovery circuit may further comprise a second transmission line comprising a plurality of segments of a second predetermined length. The second transmission line receives data from a serial bit stream and propagates the data through the segments of the second predetermined length. In some embodiments, the first or second transmission line further comprise taps to extract, from the segments of the second predetermined length, a plurality of delayed data signals. The clock and data recovery circuit may further comprise a plurality of sampling circuits, coupled to the first and second transmission lines, to generate samples from the delayed data signals and the delayed clock signals.09-13-2012
20110122972SYSTEM AND METHOD FOR SIMULTANEOUS OPERATION OF MULTIPLE MODEMS USING A SINGLE TRANSCEIVER - Systems and methods for simultaneously communicating over multiple air interfaces using a single transceiver are described herein. An input is received at a transceiver. The input has a first signal encoded using a first radio technology and a second signal encoded using a second radio technology. The input is converted from an analog domain to a digital domain. The input is separated into the first signal and the second signal in the digital domain.05-26-2011
20110122971Method for transmitting/receiving feedback information in a multi-antenna system supporting multiple users, and feedback system supporting the same - A method for transmitting/receiving feedback information in a multi-antenna system using a closed-loop scheme supporting multiple users, and a feedback system supporting the same. Multiple feedback protocol scenarios are predefined on the basis of communication environments affecting feedback information configurations. The feedback information is transmitted in a feedback protocol scenario determined by a communication environment. The feedback information is constructed with information required by the communication environment.05-26-2011
20080298505HIERARCHICAL 8PSK PERFORMANCE - A method and receiver systems for demodulating and decoding a hierarchically modulated signal, e.g. an 8PSK signal, are disclosed. An exemplary method includes demodulating and processing (12-04-2008
20080298504SIGNAL RECEIVING METHOD FOR DETERMINING TRANSMISSION FORMAT OF INPUT SIGNAL AND RELATED SIGNAL RECEIVING CIRCUIT - The present invention discloses a signal receiving method for determining a transmission format of an input signal and a related signal receiving circuit. The signal receiving method includes: receiving the input signal; generating a signal detecting result corresponding to at least a signal transmission channel of a plurality of signal transmission channels according to an output result of the signal transmission channel; and determining the transmission format of the input signal according to the signal detecting result. The signal receiving circuit includes: an input interface, for receiving an input signal; a detecting module, for generating a signal detecting result corresponding to at least a signal transmission channel of a plurality of signal transmission channels according to an output result of the signal transmission channel; and a determining unit, for determining the transmission format of the input signal according to the signal detecting result.12-04-2008
20080298503SYSTEMS AND METHODS FOR ADAPTIVE SIGNAL SAMPLING AND SAMPLE QUANTIZATION FOR RESOURCE-CONSTRAINED STREAM PROCESSING - Systems and methods for adaptive signal sampling and sample quantization for resource-constrained stream processing. Exemplary embodiments include a signal sampling and signal quantization method for a data stream from a ECG sensor into a pervasive device, the method including adaptively sampling the data stream, compressing data samples from the data stream, reducing the number of samples via quantization, defining a utility function for signal reconstruction, and formulating optimization on the reconstructed signal that is jointly sampled and quantized.12-04-2008
20110002417TIME-BALANCED MULTIPLEXER SWITCHING METHODS AND APPARATUS - Methods and apparatus are provided for time-balanced switching of multiplexer circuits. An embodiment of the invention includes a transistor chain coupled to the output of the multiplexer circuit. The transistor chain preferably delays transitions that would otherwise occur relatively quickly, to match the timing of transitions that occur relatively slowly. The timing of relatively slow transitions is left unaltered. The invention advantageously allows all selector input transitions to yield a data output transition with a substantially constant delay.01-06-2011
20110026640Systems, methods, and computer readable media for digital radio broadcast receiver memory and power reduction - A method of block deinterleaving data received at a digital radio broadcast receiver is described. The method includes providing a block of memory having n×k addresses, wherein the block comprises a single table, receiving a digital radio broadcast signal at the receiver, and demodulating the digital radio broadcast signal into a plurality of interleaved data units. For at least one series of n×k data units a pointer step size is determined, and for each data unit in the series, an address in the block is calculated based on the pointer step size, and an output data unit is read from the block at the address, such that said output data units represent block deinterleaved data units. An input data unit from the plurality of interleaved data units is then written to the block at the address. Associated systems and computer readable storage media are presented.02-03-2011
20110038439Method of Selecting Receive Antennas for MIMO Systems - A method of performing receive antenna selection is presented. The method executes a determination operation for a set of receive antennas, determines a maximum result of the determination operation for two of the antennas, eliminates one of the two antennas from the set of antennas, and repeats the determination and elimination process until only a predetermined number of antennas remain in the set. The signals from these remaining antennas are then processed. The present invention reduces receiver complexity and cost.02-17-2011
20120087444Secure Information Transfer Based on Global Position - Secure communication of information is effected from a first party to a second party when the first party knows its own global location and the global location of the second party, and employs what essentially is an undiscoverable code signal that is broadcast to, and received by, both the first and the second parties. The first party securely communicates information to the second party by modifying the code signal with the information that is to be communicated and sends the modified code signal to the second party. Illustratively, the code signal is related to the Y component of a GPS signal.04-12-2012
20120087443Event Handling in a Radio Circuit - A radio circuit comprises an interface unit for communicating data and commands over a communication link between a digital baseband circuit and the radio circuit. Furthermore, the radio circuit comprises an event-scheduling unit, a local time-reference unit, a synchronization unit, and an execution-control unit. The event-scheduling unit is arranged to receive event-request commands specifying an event to be executed in the radio circuit and a time instant at which the specified event is to be executed, from the digital baseband circuit. Furthermore, the event-scheduling unit is arranged to, in response to receiving an event request-command, schedule the specified event to be executed on the specified time instant. The execution-control unit is arranged to issue execution of each scheduled event at the scheduled time instant based on time information from the local time reference unit. The local time-reference unit is synchronized with a time-reference unit in the digital baseband circuit in response to a synchronization command, from the synchronization unit.04-12-2012
20130010899Method and System for Loop Through for Multi-Band TV Tuners and Set-Top Box and/or TV Set Applications - Methods and systems for loop-through for multi-band TV tuners and set-top box and/or TV set applications are disclosed and may include generating master and slave output signals from one or more low-noise amplifiers including master and slave stages. The master and slave stages may include parallel-coupled gain paths. Gate terminals and source terminals of input transistors for the master and slave stages may be directly coupled. The input transistors for the master and slave stages may share an inductor coupled to the source terminals and to ground. The master and slave stages may include cascode stages. VHF and UHF signals may be amplified in the multi-band receiver. The generated master output signal may be processed in the multi-band receiver, and may be utilized to generate I and Q output signals. A plurality of the slave output signals may be summed and communicated to a receiver external to the multi-band receiver.01-10-2013
20130010898OFDM BEAMFORMER, AND A SIGNAL RECEIVING SYSTEM INCORPORATING THE SAME - An OFDM beamformer of a signal receiving system receives multiple frequency-domain sample signal vectors each transformed from arrival signals received by a corresponding antenna element of an antenna array, and includes: multiple signal splitters each splitting a corresponding frequency-domain sample signal vector into a data signal subvector and a pilot signal subvector based on predetermined position information; a weight generator generating an estimated auto-correlation matrix and an estimated cross-correlation vector based on the data signal subvectors, the pilot signal subvectors, and a reference pilot signal vector associated with a desired user, and generating an optimal weight vector based on the estimated auto-correlation matrix and the estimated cross-correlation vector; and a combining unit combining, based on the optimal weight vector, serial data signals converted from each data signal vector by a corresponding parallel-to-serial converter to generate an estimated data symbol output corresponding to the desired user.01-10-2013
20130022154ANALOG CORRELATION TECHNIQUE FOR ULTRA LOW POWER RECEIVERS - One embodiment of the present invention relates to an analog correlation unit comprising a plurality of parallel correlation components configured to operating according to an advanced switched-capacitor low pass filter principle that increases coding gain of the unit. Each correlation component comprises a sampling stage and a correlation stage. The sampling stage may comprise a switched capacitor configured to sample a received baseband signal to determine a value (e.g., polarity) of the baseband signal. The sampled baseband signal is provided to the correlation stages, which may respectively comprise a plurality of switched integrators configured to selectively receive and integrate the sampled baseband signal over time depending upon values (e.g., polarity) of the correlation code to generate voltage potential values. The analog correlation result is evaluated by a comparison of an adjustable threshold voltage with the difference between the output voltage potential values.01-24-2013
20120243638SYSTEMS FOR COMMUNICATING USING MULTIPLE FREQUENCY BANDS IN A WIRELESS NETWORK - Communication signals using a first and a second frequency band in a wireless network is described herein. The first frequency band may be associated with a first beamwidth while the second frequency band may be associated with a second beamwidth. An apparatus may include receiver circuitry arranged to receive first signals in a first frequency band associated with a first beamwidth and second signals in a second frequency band associated with a second beamwidth, the first signals comprising a frame synchronization parameter and the second signals comprising frame alignment signals. The apparatus may further include processor circuitry coupled to the receiver circuitry, the processor circuitry arranged to activate or deactivate the receiver circuitry to receive the frame alignment signals based on the frame synchronization parameter. Other embodiments may be described and/or claimed.09-27-2012
20080253481Method for computing the frequency of a signal from in-phase and quadrature components - A novel method and apparatus for computing the phase derivative and also the frequency of a received signal from digital baseband In-Phase (I) and Quadrature (Q) samples is derived and implemented. The resulting method computes the phase derivative and frequency of a received signal from I and Q data directly without the intermediate problem of phase unwrapping required for computing the derivative of modulo-mapped phase. The apparatus is intended for use both in single channel systems performing digital frequency demodulation and in direction-finding systems computing differential phase across two channels.10-16-2008
20080225987Asynchronous interconnection system for 3D interchip communication - An embodiment of the present invention relates to a asynchronous interconnection system comprising a transmitter circuit and a receiver circuit inserted between inserted between respective first and second voltage references and having respective transmitter and receiver nodes coupled in a capacitive manner. The receiver circuit comprises: a recovery stage inserted between the first and second voltage references of the receiver circuit and connected to the receiver node; and a state control stage, in turn inserted between the first and second voltage references of the receiver circuit connected to the recovery stage correspondence with a first feedback node providing a first control signal and having a second feedback node connected in a feedback manner to the recovery stage. The recovery stage comprises a first feedback loop connected to the first feedback node and acting in such a way to recover a received voltage signal and a feedback loop connected to the second feedback node of the state control stage and acting in such a way to deactivate the recovery feedback on the receiver node and guarantee that the receiver node is let in a high impedance state.09-18-2008
20080225986Application Software Flight Recorder Developer Client - Apparatus having corresponding methods and computer-readable media comprises an input circuit to receive data over a communication channel, the data representing operation of a computer during an test interval and screen updates generated by the computer during the test interval; and a processor to generate a motion picture representing the test interval and contemporaneously comprising a stripchart area showing a first stripchart representing the operation of the computer based on the data, and a screen update area showing the screen updates represented by the second data stream; wherein the stripchart area and the screen update area are synchronized.09-18-2008
20130170585Biquad Infinite Impulse Response System Transformation - A BIIR system includes a first delay line for receiving at least one input data sample and generating delayed input samples as a function of the input data sample. The BIIR system further includes a second delay line including multiple delay elements connected in series for generating delayed output samples. An input of one of the delay elements receives at least one output data sample of the BIIR system. A summation element in the BIIR system generates the output data sample of the BIIR system as a function of an addition of at least first and second signals and a subtraction of at least a third signal. The third signal includes a first delayed output sample generated by the second delay line multiplied by a first prescribed value. The first delayed output sample and the output data sample are temporally nonadjacent to one another.07-04-2013
20130170586Radar Detection Method And System Using Low-Resolution FFTS - A method of identifying radar in a wireless device includes detecting an event corresponding to receipt of a signal by the wireless device. The event can include an analog to digital converter (ADC) saturation, a radio frequency (RF) saturation, and/or an ADC power high condition. Notably, the gain change in the wireless device is delayed for a first predetermined time period. Data preceding the event for the first predetermined time period can be buffered. A first low-resolution fast Fourier transform (FFT), wherein low-resolution FFTs are referred to as short FFTs, can be performed with the buffered data. The first short FFT can be processed. When results of the processing indicate the signal is radar, the radar can then be identified.07-04-2013
20110274214METHOD AND APPARATUS FOR STORE AND REPLAY FUNCTIONS IN A DIGITAL RADIO BROADCASTING RECEIVER - A method for receiving and processing a digital radio broadcasting signal includes: receiving a digital radio broadcasting signal comprised of two or more multicast contents, playing a first one of the multicast contents, and concurrently storing a second one of the multicast contents. A receiver that implements the method is also provided.11-10-2011
20110274213RECEPTION DEVICE AND APPARATUS HAVING THE SAME - Data transfer is realized to support a high-speed and complex driving control of the driving element. A driving device includes a driving unit configured to supply a driving element with a pulse signal that determines a driving period to drive the driving element, an input unit configured to receive, in synchronization with a trigger signal, a data signal containing first information, second information, a first flag and a second flag that determine a waveform of the pulse signal, a first setting unit configured to set in the driving unit the first information that is input to the input unit, a retaining unit configured to read and retain the second information on the basis of the first flag, and a second setting unit configured to set in the driving unit the second information that is retained in the retaining unit on the basis of the second flag.11-10-2011
20080219381METHOD AND SYSTEM FOR REDUNDANCY-BASED DECODING OF VIDEO CONTENT IN A WIRELESS SYSTEM - Aspects of a method and system for redundancy-based decoding of video content in a wireless system are provided. A wireless receiver may determine whether a received multimedia data stream comprises video content and may select a redundancy-based decoder when video content is detected. The wireless receiver may be a WLAN receiver or a cellular receiver. Video content may be indicated by at least one flag in a preamble or a reserved field of the received multimedia data. The redundancy-based decoder may be a Viterbi decoder. The wireless receiver may enable a standard Viterbi decoder to decode portions of the multimedia data that do not comprise video content. The wireless receiver may generate at least one signal to select the redundancy-based decoder or the standard Viterbi decoder.09-11-2008
20120250795SYSTEM AND METHOD FOR EFFECTIVELY IMPLEMENTING A FRONT END CORE - An apparatus for implementing a front end core for a transimpedance amplifier includes an input transimpedance stage that receives an FE core input signal and responsively generates an output transimpedance gain signal. A first output gain stage receives the output transimpedance gain signal and responsively generates an FE core output signal. A phase inverter stage also receives the output transimpedance gain signal and responsively generates an inverted output signal. A second output gain stage then receives the inverted output signal and responsively generates an inverted FE core output signal.10-04-2012
20130094613PRECODING SIGNALING IN A MIMO WIRELESS COMMUNICATION SYSTEM - A method for performing data transmission between a transmitter and a receiver. The method includes the steps of generating a feedback message at the receiver in response to data received from the transmitter, assigning an identifier for the feedback message, storing the feedback message in association with the identifier in the receiver, transmitting the feedback message and the identifier to the transmitter, determining, at the transmitter, transmission format for data to be transmitted to the receiver based on the feedback message received from the receiver; and transmitting data and a control message, by the transmitter, using the determined transmission format, with the control message comprising the identifier of the feedback message based on which the transmission format is determined.04-18-2013
20130094615EXPLICIT SKEW INTERFACE FOR REDUCING CROSSTALK AND SIMULTANEOUS SWITCHING NOISE - Methods and apparatus are disclosed, such as those involving an inter-chip interface configured to receive and process electronic data. One such interface includes a receiver circuit that includes a clock tree configured to receive a clock signal at a clock tree input. The clock tree distributes a plurality of clock signals delayed from the clock signal such that one or more of the clock signals have a delay different from the delays of the other clock signals. The receiver circuit further includes a plurality of data input latches configured to receive a plurality of data elements over two or more different points in time. This configuration at least partially reduces crosstalk and simultaneous switching output noise.04-18-2013
20130094614OFDM COMMUNICATION SYSTEM AND METHOD HAVING A REDUCED PEAK-TO-AVERAGE POWER RATIO - An OFDM system embeds sequence information in the transmitted signal that reduces peak average power ratio (PAP) with minimal impact on the overall system efficiency. A marker is embedded onto the transmitted information that is used to identify the combining (inversion) sequence at the receiver. In one embodiment, selected tones in a cluster are rotated when the corresponding phase factor rotates the cluster.04-18-2013
20130101069Word Boundary Lock - In an embodiment, a method for determining a word boundary in an incoming data stream includes initializing an N bit register with initial content, receiving a number of consecutive N bit words of the incoming data stream and processing each of the number of consecutive N bit words. The processing includes performing operations per bit position of the register, including performing an XOR operation on a corresponding received data bit and a next received data bit, performing an AND operation on a current state of the bit position of the register and a result of the XOR operation, and storing a result of the AND operation to update the state of the bit position of the register. The word boundary is defined based on the content of the register following the processing of the number of consecutive N bit words.04-25-2013
20130101067RECEIVING AND TRANSMITTING SIGNALS ACROSS NON-CONTIGUOUS CHANNELS IN A COMMUNICATION SYSTEM - Embodiments for processing signals are disclosed. In one embodiment, a method includes receiving signals from at least two non-contiguous channels, where the at least two non-contiguous channels are within a predetermined bandwidth, and where each of the at least two non-contiguous channels has a center frequency. The method also includes utilizing an average of the center frequencies of the at least two non-contiguous channels to down convert the at least two non-contiguous channels to a combined intermediate frequency (IF) channel that has a center frequency that is an average of a difference between the center frequencies of the at least two non-contiguous channels. The method also includes down converting the combined IF channel to a combined channel at a baseband frequency. The method also includes recovering the at least two non-contiguous channels from the combined channel at a baseband frequency utilizing an upper sideband and lower sideband recovery mechanism.04-25-2013
20130101068Mixed-Signal Radio Frequency Receiver Implementing Multi-Mode Spur Avoidance - A mixed-signal radio frequency receiver implements multiple spur avoidance modes to reduce or remove spurs or digital noise injection into the received channel to enhance the receiver performance. The multiple spur avoidance modes are reconfigurable to allow a single mode or multiple modes to be selected for use depending on the application. One or more spur avoidance modes can be selected to enhance the performance of the receiver or the modes can be selected to reduce power consumption. The same spur avoidance circuit is used to support all of the spur avoidance modes by reconfiguring the circuit for each mode or each combination of modes. In another embodiment, a clock masking scheme is applied to align analog and digital clock edges to separate digital activities from sensitive analog activities.04-25-2013
20130101070Receiver Circuit and Method for Operating a Receiver Circuit - A receiver circuit includes a unit configured to determine filter coefficients based on a sampling time error of a received signal and a phase error of the received signal, as well as a filter configured to filter a signal, which is based on the received signal, based on the filter coefficients.04-25-2013
20130142284PREDISTORTION CIRCUIT, WIRELESS COMMUNICATION UNIT AND METHOD FOR COEFFICIENT ESTIMATION - A predistortion circuit is for providing distortion correction in a presence of harmonics. The predistortion circuit includes an input for receiving a digital input signal; an output for providing a digital output signal to an up-conversion element that produces harmonic terms operably coupled to a non-linear device; and a processor operably coupled to an output of the non-linear device for receiving an output radio frequency signal therefrom and arranged to determine a digital correction to be applied to the digital input signal. The processor is further arranged to determine the digital correction that includes a plurality of in-phase and quadrature cross-terms of the digital input signal where terms of a same order have different co-efficients.06-06-2013
20080205553RECONSTRUCTION OF TIRE PRESSURE MONITORING SIGNALS - A tire pressure monitoring system includes a process of reconstructing a complete data frame from portions of partially received data frames. The tire pressure monitoring system includes a receiver that includes a buffer to store portions of the transmissions for reconstruction of data in response to portions of the transmission not being received. A reconstructed data frame is generated using the saved partially received data frame and the currently received partial data frame.08-28-2008
20110216854RECEIVING DEVICE AND METHOD - A receiving device includes a FFT unit performing FFT on an input signal of a time domain to transform the input signal into a plurality of signals of frequency domains and outputting the plurality of signals of the frequency domains, a signal extracting unit extracting a signal with a power that is greater than a threshold value from among the plurality of signals of the frequency domains output from the first FFT unit and outputting the extracted signal, an IFFT unit performing IFFT on the extracted signal output from the signal extracting unit, a subtracting unit subtracting the extracted signal output from the IFFT unit from the input signal and outputs a subtracted signal, and a second FFT unit transforming the subtracted signal output from the subtracting unit into a signal of the frequency domain by performing the FFT on the subtracted signal output from the subtracting unit.09-08-2011
20110222631APPARATUS FOR RECEIVING SIGNAL AND METHOD OF COMPENSATING PHASE MISMATCH THEREOF - An apparatus for receiving a signal includes a training signal generator generating a training signal corresponding to each frequency channel; an IQ signal generator generating a first in-phase signal and a first quadrature-phase signal using the training signal in a first operation mode and generating a second in-phase signal and a second quadrature-phase signal using a receiving signal in a second operation mode; an IQ mismatch compensator which makes the first in-phase signal and the first quadrature-phase signal generated in response to each frequency channel converge for a reference time in the first operation mode to obtain a phase mismatch compensation coefficient and after obtaining a phase mismatch compensation coefficient with respect to selected frequency channels and generating a look-up table using the phase mismatch compensation coefficient, compensates the second in-phase signal and the second quadrature-phase signal using the phase mismatch compensation coefficient included in the look-up table in the second operation mode; and a memory in which the look-up table is stored.09-15-2011
20080198948Combined sensing methods for cognitive radio - Embodiments of cognitive radio technology can recover and utilize under-utilized portions of statically-allocated radio-frequency spectrum. A plurality of sensing methods can be employed. Transmission power control can be responsive to adjacent channel measurements. Digital pre-distortion techniques can enhance performance. Embodiments of a high DNR transceiver architecture can be employed.08-21-2008
20100284492DIVERSITY RECEIVING APPARATUS AND DIVERSITY RECEIVING METHOD - There is provided a diversity receiving apparatus, comprising: a first branch (11-11-2010
20100316167COMMON MODE TRACKING RECEIVER - A clock receiver (12-16-2010
20130156130ADAPTIVE NIGHT-TIME HIGH DEFINITION (HD) SIGNAL SENSITIVITY THRESHOLD FOR HD RADIO RECEIVERS - A vehicle has a lighting control module and a HD radio receiver. The lighting control module provides an indication of daytime operation of the vehicle and an indication of night-time operation of the vehicle. The HD radio receiver is configured for selecting between outputting digital format audio content of a radio signal and outputting analog format audio content of the HD radio signal dependent upon a HD signal sensitivity threshold. The HD radio receiver sets the HD signal sensitivity threshold to one of a plurality of different night-time HD signal sensitivity threshold values as a function of a signal strength characteristic of the HD radio signal when the lighting control module provides the indication of night-time operation thereto. The HD radio receiver sets the HD signal sensitivity threshold to a daytime HD signal sensitivity threshold value when the lighting control module provides the indication of daytime operation thereto.06-20-2013
20120281788Scalable Architecture for Satellite Channel Switch - A frequency translation module for a broadband multi-channel communication system may include an analog signal converter, a digital channel selection device, and a digital-to-analog (D/A) converter. The analog signal converter is configured to receive a plurality of analog signals, to select analog signals residing in a predefined frequency band, and to convert each of the selected analog signals into a digital signal. The digital channel selection device is configured to process digital signals corresponding to the selected analog signals and to generate a composite output of digital signals representative of the selected analog signals. The D/A converter is configured to translate the composite output to an analog signal output decodable by a receiver. Further, the frequency translation module may include a mixer configured to upconvert the analog signal output to a frequency decodable by the receiver.11-08-2012
20120281787METHOD AND SYSTEM FOR I/Q MISMATCH CALIBRATION AND COMPENSATION FOR WIDEBAND COMMUNICATION RECEIVERS - Methods and systems for I/Q mismatch calibration and compensation for wideband communication receivers may comprise receiving a plurality of radio frequency (RF) channels, downconverting the received plurality of received RF channels to baseband frequencies, determining and removing average in-phase (I) and quadrature (Q) gain and phase mismatch of the downconverted channels, determining a residual phase and amplitude tilt of the downconverted channels with removed average I and Q gain and phase mismatch, and compensating for said residual phase and amplitude tilt I and Q gain and phase mismatch of the downconverted channels. The determined phase tilt may be compensated utilizing a phase tilt correction filter, which may comprise one or more all-pass filters. The average I and Q gain and phase mismatch may be determined utilizing a blind source separation (BSS) estimation algorithm.11-08-2012
20130182795SYSTEMS AND METHODS FOR PEER-TO-PEER COMMUNICATION - Methods, devices, and computer program products for peer-to-peer communication are described herein. In one aspect, an apparatus includes a receiver and processor. The receiver is configured to receive a first data unit from a first device. The first data unit includes a Media Access Control (MAC) address of the first device and data. The processor is configured to generate a device address of the processor and a device address of the first device, and provide the generated device address of the processor, the generated device address of the first device, and the data of the first data unit to an application executable on the processor.07-18-2013
20130182796Method and System for Implementing a Single Weight (SW) Single Channel (SC) MIMO System - Methods and systems for processing signals in a receiver are disclosed herein and may comprise generating at least one control signal that may be utilized to control a first received signal. A phase of the first received signals may be adjusted via the generated control signal so that the phase of the first received signal may be equivalent to a phase of a second received signal, where the phase of the first signal may be adjusted within a processing path used to process the first received signal. An amplitude of the first received signal may be adjusted via the generated control signal so that the amplitude of the first received signal may be equivalent to an amplitude of a second received signal, where the amplitude of the first signal is adjusted within the processing path used to process the first received signal.07-18-2013
20110286552WIDEBAND DIGITAL RECEIVER COMPRISING A PHASE JUMP DETECTION MECHANISM - A wideband digital receiver includes an antenna, an amplifier, and a digital IFM device for measuring the frequency of the received signal or signals based on the result of discrete Fourier transforms DFT applied to said received signals. The receiver includes means for periodically estimating the phase jumps of said signals by combining the measurements of the phase of said signals produced by the transforms DFT.11-24-2011
20110310998SYSTEMS AND METHODS FOR PERFORMING PARALLEL DIGITAL PHASE-LOCKED-LOOP - A parallel phase locked loop (PLL) system includes a first chain of a plurality of pre-locking PLLs that operates from a free-run state to a locked state; and a second chain of a plurality of PLLs to work from the locked-state to recover signal output.12-22-2011
20110310997METHOD OF DISCONTINUOUS RECEIVING STATUS THAT THE USER EQUIPMENT ENTERED - A method for user equipment entering discontinuous reception status, wherein the process of the user equipment side includes: the user equipment starts a timer for entering the discontinuous reception status when the user equipment receives downlink data or uplink grant; the user equipment enters the discontinuous reception status when the timer expires; wherein before the timer expires, if the user equipment receives new downlink data or uplink grant, the user equipment restarts the timer. Further, the process of the base station side includes: the base station starts the timer for the user equipment entering the discontinuous reception status when the base station has sent the downlink data or uplink grant to the user equipment; the base station determines that the user equipment enters the discontinuous reception status when the timer expires; wherein before the timer expires, if the base station transmits again the downlink data or uplink grant to the user equipment, then the base station restarts the timer.12-22-2011
20130188755RECEIVER - A receiver includes a low noise amplifier (LNA), a passive mixer, a passive filter, a baseband processing block and a voltage controller. The LNA receives and amplifies a radio frequency (RF) signal. The passive mixer is coupled to the LNA without any AC coupling capacitance therebetween, and generates an intermediate frequency signal by down-converting the RF signal. The passive filter filters the intermediate frequency signal. The baseband processing block includes a transimpedance amplifier (TIA) and processes the filtered intermediate frequency signal. The voltage controller keeps a first node and a second node of a signal path to be around a common DC voltage, wherein the first node is located between an output terminal of the LNA and an input terminal of the passive mixer, and the second node is located between an output terminal of the passive mixer and an output terminal of the TIA.07-25-2013
20120020437OFDM COMMUNICATION RECEPTION DEVICE - An reception device includes: a fast-fourier-transform (FFT) circuit to FFT a first Orthogonal Frequency Division Multiplexing (OFDM) signal including a plurality of first symbols with a guard interval and a valid symbol using a plurality of FFT windows that includes different timings within a symbol length period; a propagation channel estimation circuit to extract pilot signals from the fast-fourier-transformed first OFDM signal, and estimate a plurality of propagation channel characteristics of the plurality of first symbols based on the pilot signals; and a propagation channel compensation circuit to obtain a propagation channel characteristic of a second symbol without a pilot signal based on the plurality of propagation channel characteristics and remove the propagation channel characteristic of the second symbol from a second OFDM signal obtained by fast-fourier-transforming the second symbol.01-26-2012
20120020436Method and device for multi-channel data alignment in transmission system - A method and a device for multi-channel data alignment in a transmission system are provided, wherein the method comprises receiving a first stream data and a second stream data, determining a deleting/inserting state of the first stream data and the second stream data to generate an information of mismatch data due to a speed difference situation, generating a reverse inserting control signal or a reverse deleting control signal to completely restore the original first stream data and/or the original second stream data at a transmission end, deleting/inserting the first stream data and the second stream data simultaneously after receiving the deleting/inserting state of the first stream data and the second stream data, and outputting the corrected first stream data and the corrected second stream data without mismatching.01-26-2012
20120033762METHOD FOR DYNAMICALLY ADJUSTING ONE OR MORE RF PARAMETERS AND COMMUNICATIONS APPARATUSE UTILIZING THE SAME - A communications apparatus is provided. A radio frequency (RF) circuit is arranged to receive an RF signal from an antenna and process the RF signal according to one or more RF parameters to generate an intermediate signal. A signal processing unit is arranged to process the intermediate signal to generate a processed signal and generates signal processing information regarding requirements for processing the intermediate signal. An RF circuit controller is coupled to the RF circuit and the signal processing unit and arranged to dynamically adjust the RF parameters according to the signal processing information.02-09-2012
20120033761Hybrid Adaptive Antenna Array - Disclosed is a hybrid antenna array (02-09-2012
20120294389CLOCK RECOVERY APPARATUS AND METHOD THEREOF - A method of recovering a clock signal from a digital signal in a receiver includes generating a representation of an eye diagram from symbols of the digital signal, in which the symbols are sampled at a sample rate such that the representation of the eye diagram is generated by a plurality of samples. The generated representation is converted into an array of data elements having a first set of data corresponding to the plurality of samples, and a second set of data representing a plurality of data bins. A plurality of measurements are performed on the array of data elements and/or the eye diagram to obtain a plurality of measurement outputs corresponding to the plurality of samples, which are combined at each sample. A sample is selected as a clock sample based on results of the combination.11-22-2012
20130208831ENERGY-SAVING RECEIVER ASSEMBLY FOR THE WIRELESS RECEPTION OF DATA - A receiver assembly for the wireless reception of data that are modulated onto a carrier signal includes an analog receiver, an evaluating device and a control device. The control device controls the receiver by means of sampling pulses such that the receiver is activated during the sampling pulses and is ready to receive transmission signals and is deactivated during the sampling pauses. The evaluating device generates a data bit sequence from the received signals that are supplied by the receiver during the sampling pulses. The control device is further designed to actuate the receiver between phases having differing sampling frequency ranges in dependence on at least one predefined switching criterion.08-15-2013

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