Patent application number | Description | Published |
20080219381 | METHOD 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 |
20080310351 | Preamble Formats for MIMO Wireless Communications - A method for generating a preamble of a frame for a multiple input multiple output (MIMO) wireless communication begins by, for each transmit antenna of the MIMO wireless communication, generating a carrier detect field, wherein, from transmit antenna to transmit antenna, the carrier detect field is cyclically shifted. The method continues by, for a first grouping of the transmit antennas of the MIMO wireless communication: generating a first guard interval following the carrier detect field; and generating at least one channel sounding field, wherein, from transmit antenna to transmit antenna in the first grouping, the at least one channel sounding field is cyclically shifted, and wherein the at least one channel sounding field follows the first guard interval. The method continues by, when the MIMO wireless communication includes more than the first grouping of the transmit antennas, for another grouping of the transmit antennas: generating at least one other channel sounding field, wherein, from transmit antenna to transmit antenna in the another grouping, the at least one other channel sounding field is cyclically shifted, and wherein the at least one other channel sounding field follows the at least one channel sounding field; and generating the first guard interval prior to the at least one other channel sounding field. | 12-18-2008 |
20090074096 | APPARATUS FOR HIGH DATA THROUGHPUT RECEPTION IN A WLAN - An apparatus for high data throughput reception in a WLAN includes a receiving module, first and second determining modules, a generating module, and a producing module. The receiving module receives a symbol vector representing M streams of symbols transmitted via a wireless communication channel. The first determining module determines inner coded bits and extrinsic information of the inner coded bits based on the symbol vector, a channel matrix, and inner extrinsic information feedback. The second determining module determines outer coded bits and extrinsic information of the outer coded bits based on the extrinsic information of the inner coded bits, the inner coded bits, and a soft input soft output decoding process. The generating module generates the inner extrinsic information feedback based on the extrinsic information of the outer coded bits. The producing module produces decoded bits based on the outer coded bits. | 03-19-2009 |
20090143030 | PROGRAMMABLE TRANSMITTER - A programmable transmitter generates a frame in a frame format according to one of a plurality of operating modes using a frame structure table storing a respective frame format for each of the operating modes. The transmitter includes a frame structure engine that receives a mode selection signal indicative of a select operating mode, and accesses the frame structure table to determine the frame format of the select operating mode. The frame structure engine produces a control signal to a frame generator to control the generation of a frame in the frame format of the select operating mode. | 06-04-2009 |
20090154596 | RF TRANSMITTER HAVING MULTIPLE CONSTANT TRANSMIT POWER LEVELS - A radio frequency transmitter includes a baseband transmit processing module, a mixing module, a power amplifier, a transmit power sense module, and a transmit power control module. The baseband transmit processing module is operably coupled to encode outbound data into outbound baseband signals in accordance with one of a plurality of encoding protocols. The mixing module is operably coupled to convert the outbound baseband signals into outbound radio frequency signals. The power amplifier is operably coupled to amplify the outbound RF signals prior to transmission to produce amplified outbound RF signals. The transmit power sense module is operably coupled to sense the amplified outbound RF signals to provide a transmit signal strength indication (TSSI). The transmit power control module is operably coupled to adjust gain of the baseband transmit processing module, the mixing module, and/or the power amplifier based on the TSSI and the particular encoding protocol used to produce the baseband signals. | 06-18-2009 |
20090207827 | HIGH DATA THROUGHPUT WIRELESS LOCAL AREA NETWORK RECEIVER - A method for receiving a frame in a high data throughput wireless local area network begins by receiving a preamble of the frame via a channel in accordance with a default receiver filter mask. The processing continues by validating the preamble. The processing continues by, when the preamble is validated, interpreting the preamble to determine a high data throughput channel configuration. The processing continues by reconfiguring the default receiver filter mask in accordance with the high data throughput channel configuration to produce a reconfigured receiver filter mask. The processing continues by receiving a data segment of the frame in accordance with the reconfigured receiver filter mask. | 08-20-2009 |
20090253379 | Wireless data communications using low traffic channels of a frequency spectrum - Provided is a wireless communication device in a communication system that utilizes unused wireless channels for wireless communications. The wireless communication device determines whether a channel within a frequency spectrum is unused. When the channel is unused, the communication device generates a generic signal in accordance with a frequency spectrum etiquette. The wireless communication device transmits the generic signal to indicate upcoming use of the channel, and in accordance with the frequency spectrum etiquette, transmits a protocol specific signal via the channel in accordance with a specific protocol of a plurality of specific protocols. | 10-08-2009 |
20090262859 | Long training sequence for MIMO WLAN systems - A method for configuring a multiple input multiple output (MIMO) wireless communication begins by generating a plurality of preambles for a plurality of transmit antennas. Each of the plurality of preambles includes a carrier detection sequence at a legacy transmit rate, a first channel sounding at the legacy transmit rate, a signal field at the legacy transmit rate, and Z−1 channel soundings at a MIMO transmit rate, where L corresponds to a number of channel soundings. The method continues by simultaneously transmitting the plurality of preambles via the plurality of transmit antennas. | 10-22-2009 |
20090268846 | MODIFIED PREAMBLE FOR PROGRAMMABLE TRANSMITTER - A programmable transmitter generates a frame preamble to train a receiver with respect to a communication link format that corresponds to a transmission mode wherein the transmission mode may comprise transmitting the communication link over one or more antennas. Generally, the invention includes generating a preamble with an arrangement that depends upon whether a Greenfield (high data rate) or mixed mode transmission is to occur and that depends upon a number of spatial streams that are to be generated. One format for high data rate transmission includes a short training sequence, a long training sequence and a signal field. The mixed mode transmission further includes a legacy prefix. | 10-29-2009 |
20090282315 | LDPC coding systems for 60 GHz millimeter wave based physical layer extension - LDPC coding systems for 60 GHz millimeter wave based physical layer extension. LDPC (Low Density Parity Check) encoding in cooperation with sub-carrier interleaving, in the context of orthogonal frequency division multiplexing (OFDM), and appropriate symbol mapping is performed in accordance with transmit processing as may be performed within a communication device. In a receiving communication device, receive processing may be performed on a received signal based on the type of LDPC, sub-carrier interleaving, and symbol mapping thereof. The LDPC code employed in accordance with such LDPC encoding may have a partial-tree like structure. In addition, appropriate manipulation of the bits assigned to respective sub-carriers may be performed to ensure that the bits emplaced in the MSB (Most Significant Bit) location of various symbols has some desired diversity (e.g., from different codewords, from appropriately different locations within a given codeword, etc.). | 11-12-2009 |
20090285172 | ASSIGNMENT OF HOLDING PACKETS IN A WIRELESS COMMUNICATION NETWORK - A method and apparatus for assigning holding packets in a wireless communication system or network includes determining an invalid station address that corresponds to an invalid station and that does not correspond to the address of an affiliated station. The invalid station address is assigned to a holding packet. The holding packet is transmitted to allocate a transmit period to the invalid station. This generates a quiet time in the wireless communication system or network during the transmit period. | 11-19-2009 |
20090291654 | RECEIVER WITH HYBRID RECEPTION ESTIMATION AND METHODS FOR USE THEREWITH - A receiver includes an antenna array that generates a plurality of received signals from at least a first remote transmitter and a second remote transmitter, the antenna array having a beam pattern that is controllable based on at least one control signal. A plurality of receiver sections process the plurality of received signals to generate a plurality of down-converted signals. A receiver processing module, generates the at least one control signal to control the beam pattern to a first pattern during a first time period for reception from the first remote transmitter, generates a first reception estimate based on the plurality of down-converted signals during the first time period, generates the at least one control signal to control the beam pattern to a second pattern during a second time period for reception from the second remote transmitter, generates a second reception estimate based on the plurality of down-converted signals during the second time period, and generates inbound data based on the first reception estimate and the second reception estimate. | 11-26-2009 |
20090291659 | RECEIVER WITH STATISTICAL ANALYSIS AND METHODS FOR USE THEREWITH - A receiver includes an antenna array that generates a plurality of received signals from at least a first remote transmitter and a second remote transmitter. Aa plurality of receiver sections process the plurality of received signals to generate a plurality of down-converted signals. A receiver processing module generates a first plurality of reception matrices corresponding to the first remote transmitter based on the plurality of down-converted signals, generates a first reception statistic from a sum based on the first plurality of reception matrices, and generates an association decision corresponding to one of: the first remote transmitter and the second remote transmitter, based on the first reception statistic. | 11-26-2009 |
20090291660 | MULTI-BAND RECEIVER WITH HARMONIC CANCELLATION AND METHODS FOR USE THEREWITH - A multi-band receiver includes a first receiver coupled to receive a first desired signal component of an RF signal over a first range of frequencies and generate a first received signal. A second receiver receives a second desired signal component of the RF signal over a second range of frequencies and generates a second received signal. The second receiver includes a harmonic cancellation module that attenuates a harmonic of the first desired signal component that falls within the second range of frequencies. | 11-26-2009 |
20090325507 | BASEBAND / RFIC INTERFACE FOR HIGH THROUGHPUT MIMO COMMUNICATIONS - Analog signal paths are utilized between a baseband processor and a radio front end to support high throughput communications for a multiple in multiple out radio transceiver that support communications over two or more antennas. Specifically, analog differential I and Q path communication signals are exchanged between a radio front end core and a baseband processor to maximize throughput capacity for high data rate signals. Along the same lines, the impedances of traces and the interface are matched to reduce I/Q imbalance. | 12-31-2009 |
20100111145 | BASEBAND UNIT HAVING BIT REPETITIVE ENCODED/DECODING - A baseband unit includes an input/output interface and a processing module. The input/output interface module receives a data word of outbound data and outputs a plurality of outbound symbols. The processing module converts the data word into a bit repetitive data word; encodes the bit repetitive data word to produce an encoded data block; and converts the encoded data block into the plurality of outbound symbols. | 05-06-2010 |
20100115371 | Selective merge and partial reuse LDPC (Low Density Parity Check) code construction for limited number of layers Belief Propagation (BP) decoding - Selective merge and partial reuse LDPC (Low Density Parity Check) code construction for limited number of layers Belief Propagation (BP) decoding. Multiple LDPC matrices may be generated from a base code, such that multiple/distinct LDPC coded signals may be encoded and/or decoded within a singular communication device. Generally speaking, a first LDPC matrix is modified in accordance with one or more operations thereby generating a second LDPC matrix, and the second LDPC matrix is employed in accordance with encoding an information bit thereby generating an LDPC coded signal (alternatively performed using an LDPC generator matrix corresponding to the LDPC matrix) and/or decoding processing of an LDPC coded signal thereby generating an estimate of an information bit encoded therein. The operations performed on the first LDPC matrix may be any one of, or combination of, selectively merging, deleting, partially re-using one or more sub-matrix rows, and/or partitioning sub-matrix rows. | 05-06-2010 |
20100115372 | Header encoding for single carrier (SC) and/or orthogonal frequency division multiplexing (OFDM) using shortening, puncturing, and/or repetition - Header encoding for SC and/or OFDM signaling using shortening, puncturing, and/or repetition in accordance with encoding header information within a frame to be transmitted via a communication channel employs different respective puncturing patterns as applied to different portions thereof. For example, a first puncturing pattern is applied to a first portion of the frame, and a second puncturing pattern is applied to a second portion of the frame (the second portion may be a repeated version of the first portion). Shortening (e.g., by padding 0-valued bits thereto) may be made to header information bits before they undergo encoding (e.g., in an LDPC encoder). One or both of the information bits and parity/redundancy bits output from the encoder undergo selective puncturing. Moreover, one or both of the information bits and parity/redundancy bits output from the encoder may be repeated/spread before undergoing selective puncturing to generate a header. | 05-06-2010 |
20100115375 | Header encoding/decoding - In a communication device that is operative to perform decoding, a log-likelihood ratio (LLR) circuitry operates to calculate LLRs corresponding to every bit location within a received bit sequence. This received bit sequence may include a header and a data portion (both of which may be included within a frame that also includes a preamble). The header is composed of information bits, a duplicate of those information bits (such as may be generated in accordance with repetition encoding), and redundancy bits. The header includes information corresponding to frame or data including frame length, a code type by which the data are encoded, a code rate by which the data are encoded, and a modulation by which symbols of the data are modulated. Once the header has been decoded, then the data corresponding thereto is decoded by a block decoder circuitry to make estimates of that data. | 05-06-2010 |
20100142505 | MULTIPLE PROTOCOL WIRELESS COMMUNICATIONS IN A WLAN - A method for multiple protocol wireless communications begins by determining protocols of wireless communication devices within a proximal region. The method then continues by determining whether the protocols of the wireless communication devices within the proximal region are of a like protocol. The method continues by, when the protocols of the wireless communication devices within the proximal region are not of a like protocol, selecting a protocol of the protocols of the wireless communication devices within the proximal region based on a protocol ordering to produce a selected protocol. The method continues by utilizing the selected protocol by the wireless communication devices within the proximal region to set up a wireless communication within the proximal region. | 06-10-2010 |
20100150254 | COMMUNICATION DEVICE INCORPORATING BEAMFORMING HANDSHAKING - A communication device includes a wireless transmitter, a wireless receiver, and a processing module. The wireless transmitter, the wireless receiver, and/or the processing module facilitate: a control-level communication with another communication device using initial transmit beamforming parameters and initial receive beamforming parameters; a handshake communication with the other communication device to determine adjustments of at least one of the initial transmit beamforming parameters and the initial receive beamforming parameters to produce at least one of adjusted transmit beamforming parameters and adjusted receive beamforming parameters; and a normal-level communication with the other communication device using the at least one of the adjusted transmit beamforming parameters and the adjusted receive beamforming parameters. | 06-17-2010 |
20100220798 | PREAMBLE FORMATS SUPPORTING HIGH-THROUGHPUT MIMO WLAN AND AUTO-DETECTION - A method for generating a preamble of an Orthogonal Frequency Division Multiplexed (OFDM) data frame for a multiple input multiple output (MIMO) wireless communication includes determining at least one system condition preamble format parameter. When the system condition preamble format parameter satisfies a first preamble format parameter a preamble having a first preamble format is formed. When the system condition preamble format parameter satisfies a second preamble format parameter, a preamble having a second preamble format is formed. Further, when the system condition preamble format parameter satisfies a third preamble format parameter, a preamble having a third preamble format is formed. The first, second, and third preamble formats differ based upon their lengths, fields, and modulation formats of a high throughput signal field. | 09-02-2010 |
20100220804 | ASYMMETRICAL MIMO WIRELESS COMMUNICATIONS - A method for asymmetrical MIMO wireless communication begins by determining a number of transmission antennas for the asymmetrical MIMO wireless communication. The method continues by determining a number of reception antennas for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas exceeds the number of reception antennas, using spatial time block coding for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas does not exceed the number of reception antennas, using spatial multiplexing for the asymmetrical MIMO wireless communication. | 09-02-2010 |
20100232411 | SIGNALING FORMAT FOR WLANS - A method for wireless communication begins by determining whether legacy devices are within a proximal region of the wireless communication. The method continues, when at least one legacy device is within the proximal region, formatting a frame to include: a legacy preamble; a signal field; an extended preamble; at least one additional signal field; at least one service field; an inter frame gap; and a data field. | 09-16-2010 |
20100266064 | MIMO WIRELESS COMMUNICATION GREENFIELD PREAMBLE FORMATS - A method for multiple input multiple output wireless communication begins by determining protocols of wireless communication devices within a proximal region. The method continues by determining whether the protocols of the wireless communication devices within the proximal region are of a like protocol. The method continues by determining the number of transmit antennas. The method continues, when the protocols of the wireless communication devices within the proximal region are of the like protocol, formatting a preamble of a frame of the wireless communication utilizing at least one of cyclic shifting of symbols, cyclic shifting of tones, sparse tone allocation, and sparse symbol allocation based on the number of transmit antennas. | 10-21-2010 |
20100272151 | TRANSCEIVER WITH PLURAL SPACE HOPPING PHASED ARRAY ANTENNAS AND METHODS FOR USE THEREWITH - A wireless transceiver includes a plurality of phased array antennas, that transmit an outbound RF signal containing outbound data to remote transceivers and that receives an inbound RF signal containing inbound data from the remote RF transceivers, wherein the plurality of phased array antennas are each configurable based on a control signal. An antenna configuration controller generates the control signal to configure the phased array antenna to hop among a plurality of radiation patterns based on a hopping sequence. An RF transceiver section generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal. In one configuration, a switching section selectively couples a selected one of the plurality of phased array antennas to the RF transceiver section, based on the control signal. In figuration, the RF transceiver section includes an RF section for each antenna array. | 10-28-2010 |
20100273436 | COLLABORATIVE PAIRING TRANSCEIVER WITH SPACE HOPPING PHASED ARRAY ANTENNA AND METHODS FOR USE THEREWITH - A wireless transceiver includes at least one phased array antenna, that transmits an outbound RF signal containing outbound data to a remote transceiver and that receives an inbound RF signal containing inbound data from the at least one remote RF transceiver, wherein the at least one phased array antenna is configurable based on a control signal. An antenna configuration controller generates the control signal to configure the phased array antenna to hop among a plurality of selected radiation patterns that are collaboratively selected by the wireless transceiver and the remote transceiver via a pairing procedure. At least one RF transceiver section generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal. | 10-28-2010 |
20100273437 | TRANSCEIVER WITH SPACE HOPPING PHASED ARRAY ANTENNA AND METHODS FOR USE THEREWITH - A wireless transceiver includes at least one phased array antenna, that transmits an outbound RF signal containing outbound data to at least one remote transceiver and that receives an inbound RF signal containing inbound data from the at least one remote RF transceiver, wherein the at least one phased array antenna is configurable based on a control signal. An antenna configuration controller generates the control signal to configure the phased array antenna to hop among a plurality of radiation patterns based on a hopping sequence. At least one RF transceiver section generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal. | 10-28-2010 |
20100273523 | COMMUNICATION DEVICE THAT DETECTS AND ADAPTS TO THE PRESENCE OF OTHER DEVICES AND METHODS FOR USE THEREWITH - An adaptive communication device includes a transceiver that communicates with a first remote communication device in a millimeter wave frequency band in accordance with a first protocol. The transceiver generates conflict detection signals based on signals received from a second remote communication device that communicates in accordance with a second protocol. A conflict detection module detects communication by the second communication device based on the conflict detection signals and generates a model trigger signal in response thereto. A conflict modeling module responds to the model trigger signal by generating idle prediction data based on the conflict detection signals, wherein the idle prediction data predicts an idle period in the communications by the second remote communication device. A transmission control module generates transmit control signals based on the idle prediction data, wherein the transceiver times transmissions sent to the first remote communication device based on the transmit control signals. | 10-28-2010 |
20100281330 | Low complexity communication device employing in-place constructed LDPC (Low Density Parity Check) code - Low complexity communication device employing in-place constructed LDPC (Low Density Parity Check) code. Intelligent design of LDPC codes having similar characteristics there between allows for a very efficient hardware implementation of a communication device that is operative to perform decoding of more than one type of LDPC coded signals. A common basis of decoder hardware (e.g., decoder circuitry) is employed when decoding all of the various types of LDPC coded signals that such a communication device can decode. However, all of the decoder hardware is only employed to decode signals corresponding to the lowest code rate LDPC code supported by the communication device. A first subset of the decoder hardware is employed to decode signals corresponding to the second to lowest code rate LDPC code, a second subset (being less than the first subset) is employed to decode signals corresponding to the third to lowest code rate LDPC code, etc. | 11-04-2010 |
20100281335 | Communication device architecture for in-place constructed LDPC (Low Density Parity Check) code - Communication device architecture for in-place constructed LDPC (Low Density Parity Check) code. Intelligent design of LDPC codes having similar characteristics there between allows for a very efficient hardware implementation of a communication device that is operative to perform encoding of respective information bit groups using more than one type of LDPC codes. A switching module can select any one of the LDPC codes within an in-place LDPC code for use by an LDPC encoder circuitry to generate an LDPC coded signal. Depending on which sub-matrices of a superimposed LDPC matrix are enabled or disabled, one of the LDPC matrices from within an in-place LDPC code matrix set may be selected. A corresponding, respective generator matrix may be generated from each respective LDPC matrix. Selection among the various LDPC codes may be in accordance with a predetermined sequence, of based operating conditions of the communication device or communication system. | 11-04-2010 |
20100285823 | CONTROL DEVICE FOR ALLOCATING RESOURCES TO COMMUNICATION DEVICES THAT USE DIFFERING PROTOCOLS AND METHODS FOR USE THEREWITH - A control device includes at least one communication interface for communicating first control data with a first plurality of communication devices that utilize the millimeter wave frequency band in accordance with a first protocol and further for communicating second control data with a second plurality of communication devices that utilize the millimeter wave frequency band in accordance with a second protocol. A resource controller allocates resources of the millimeter wave frequency band to the first plurality of communication devices and the second plurality of communication devices based on the first control data and the second control data. | 11-11-2010 |
20100285824 | MULTIMODE CONTROL DEVICE FOR ALLOCATING RESOURCES TO COMMUNICATION DEVICES THAT USE DIFFERING PROTOCOLS AND METHODS FOR USE THEREWITH - A control device includes a first communication interface for communicating first control data with a first plurality of communication devices that utilize the millimeter wave frequency band in accordance with a first protocol, wherein the first communication interface utilizes the millimeter wave frequency band in accordance with the first protocol. A second communication interface communicates second control data with a second plurality of communication devices that utilize the millimeter wave frequency band in accordance with a second protocol, wherein the second communication interface utilizes the millimeter wave frequency band in accordance with the second protocol. A resource controller allocates resources of the millimeter wave frequency band to the first plurality of communication devices and the second plurality of communication devices based on the first control data and the second control data. | 11-11-2010 |
20110028182 | MULTIMODE WIRELESS COMMUNICATION DEVICE - A multimode wireless communication device includes a first radio section operably to convert outbound analog baseband signals into first outbound RF signals and to convert first inbound RF signals into inbound analog baseband signals when the wireless communication device is in a first mode of operation and a second radio section that performs similar functions in a second mode of operation. A diplexer section includes a first diplexer for coupling to a first antenna, and a second diplexer for coupling to a second antenna, and that selectively couples the first radio section to one of the first antenna and the second antenna, and that selectively couples the second radio section to one of the first antenna and the second antenna. First and second T/R switches are coupled to the first and second diplexers and to respectively, to the first and second radio sections. | 02-03-2011 |
20110044395 | MIXED MODE PREAMBLE FOR MIMO WIRELESS COMMUNICATIONS - A preamble of a frame for a multiple input multiple output (MIMO) wireless communication for a first transmit antenna of the MIMO communication includes a legacy preamble portion in accordance with a legacy wireless communication protocol. The preamble of the frame for the MIMO wireless communication for the first transmit antenna also includes a current protocol preamble portion in accordance with a protocol of the MIMO wireless communication. The preamble of a frame for at least a second antenna of the MIMO communication includes a cyclically shifted legacy preamble portion for the frame. The preamble of the frame for the MIMO wireless communication for the second transmit antenna also includes a second current protocol preamble portion in accordance with a protocol of the MIMO wireless communication. | 02-24-2011 |
20110110353 | Multiple input multiple output wireless local area network communications - A wireless local area network (WLAN) transmitter includes a MAC module, a PLCP module, and a PMD module. The Medium Access Control (MAC) module is operably coupled to convert a MAC Service Data Unit (MSDU) into a MAC Protocol Data Unit (MPDU) in accordance with a WLAN protocol. The Physical Layer Convergence Procedure (PLCP) Module is operably coupled to convert the MPDU into a PLCP Protocol Data Unit (PPDU) in accordance with the WLAN protocol. The Physical Medium Dependent (PMD) module is operably coupled to convert the PPDU into a plurality of radio frequency (RF) signals in accordance with one of a plurality of operating modes of the WLAN protocol, wherein the plurality of operating modes includes multiple input and multiple output combinations. | 05-12-2011 |
20110194240 | WAVEGUIDE ASSEMBLY AND APPLICATIONS THEREOF - A device includes a first section, a second section, a hinge section, an antenna, a radiowave transceiver section, and a waveguide assembly. The hinge section couples the first section to the second section and allows the first section to be pivoted with respect to the second section. The antenna is located within the first section and the radio wave transceiver section is located in the second section. The waveguide assembly provides coupling through at least a portion of the first section, at least a portion of the second section, and the hinge section such that the antenna is electrically coupled to the radio wave transceiver section. | 08-11-2011 |
20110228875 | MODIFIED PREAMBLE FOR PROGRAMMABLE TRANSMITTER - A programmable transmitter generates a frame preamble to train a receiver with respect to a communication link format that corresponds to a transmission mode wherein the transmission mode may comprise transmitting the communication link over one or more antennas. Generally, the invention includes generating a preamble with an arrangement that depends upon whether a Greenfield (high data rate) or mixed mode transmission is to occur and that depends upon a number of spatial streams that are to be generated. One format for high data rate transmission includes a short training sequence, a long training sequence and a signal field. The mixed mode transmission further includes a legacy prefix. | 09-22-2011 |
20110235628 | SIGNALING FORMAT FOR WLANS - A method for wireless communication begins by determining whether legacy devices are within a proximal region of the wireless communication. The method continues, when at least one legacy device is within the proximal region, formatting a frame to include: a legacy preamble; a signal field; an extended preamble; at least one additional signal field; at least one service field; an inter frame gap; and a data field. | 09-29-2011 |
20110260839 | AUTONOMOUS BATTERY-FREE MICROWAVE FREQUENCY COMMUNICATION SYSTEM - An autonomous battery-free microwave frequency communication device which includes a capacitance, at least one antenna, a microwave energy harvesting system, a microwave frequency transceiver, and a control system. The energy harvesting system is configured to harvest and store microwave energy received via the antenna onto the capacitance. The transceiver is empowered by energy stored on the capacitance, and is configured to autonomously generate a microwave frequency carrier and to autonomously transmit information using the microwave frequency carrier according to a predetermined communications protocol via the antenna. The control system is empowered by energy stored on the capacitance, and is configured to provide information for transmission. Energy may be harvested from various communication forms, such as wireless network protocols or cellular communications. The frequency band from which energy is harvested may differ from the frequency band used for communications. The energy storage enables autonomous communications with external devices according to common or standard wireless communication protocols. | 10-27-2011 |
20110261803 | HIGH DATA THROUGHPUT WLAN FRAME FORMAT - A frame format for high data throughput wireless local area network transmissions includes a first preamble segment, a second preamble segment, and a variable length data segment. The first preamble segment includes at least one training sequence and a high throughput channel indication. The second preamble segment includes a high data throughput training sequence when the high throughput channel indication is set and includes a null segment when the high data throughput training sequence is not set. | 10-27-2011 |
20110280331 | PREAMBLE FORMATS FOR MIMO WIRELESS COMMUNICATIONS - A method for generating a preamble of a frame for a multiple input multiple output (MIMO) wireless communication begins by, for each transmit antenna, generating a carrier detect field. The method continues by, for a first grouping of the transmit antennas, generating a first guard interval following the carrier detect field; and generating at least one channel sounding field. Continuing, the method applies cyclical shift prior to transmission via the first grouping of the transmit antennas. When the MIMO wireless communication includes more than the first grouping of the transmit antennas, for another grouping of the transmit antennas. For the another grouping of the transmit antennas, generating at least one other channel sounding field. The method proceeds by generating the first guard interval prior to the at least one other channel sounding field, and applying another cyclical shift prior to transmission via the another grouping of the transmit antennas. | 11-17-2011 |
20110292883 | TRANSMISSION OF WIDE BANDWIDTH SIGNALS IN A NETWORK HAVING LEGACY DEVICES - A method for generating a preamble of a frame for a wide-bandwidth channel wireless communication begins by generating a legacy carrier detect field. The method continues by generating a channel sounding field, wherein the channel sounding field includes a plurality of tones within the wide-bandwidth channel, wherein a first set of the plurality of tones corresponds to tones of a legacy channel sounding field. The method continues by generating a legacy signal field, wherein, in time, the legacy signal field follows the channel sounding field, which follows the legacy carrier detect field. | 12-01-2011 |
20110306376 | MULTIMODE CONTROL DEVICE FOR ALLOCATING RESOURCES TO COMMUNICATION DEVICES THAT USE DIFFERING PROTOCOLS AND METHODS FOR USE THEREWITH - A control device includes a first transceiver for communicating first control data with a first plurality of devices that utilize the millimeter wave frequency band in accordance with a first protocol, wherein the first transceiver utilizes the millimeter wave frequency band in accordance with the first protocol. A second transceiver communicates second control data with a second plurality of devices that utilize the millimeter wave frequency band in accordance with a second protocol, wherein the second transceiver utilizes the millimeter wave frequency band in accordance with the second protocol. A resource controller allocates resources of the millimeter wave frequency band to the first plurality of devices and the second plurality of devices based on the first control data and the second control data. | 12-15-2011 |
20110310938 | BASEBAND / RFIC INTERFACE FOR HIGH THROUGHPUT MIMO COMMUNICATIONS - Analog signal paths are utilized between a baseband processor and a radio front end to support high throughput communications for a multiple in multiple out radio transceiver that support communications over two or more antennas. Specifically, analog differential I and Q path communication signals are exchanged between a radio front end core and a baseband processor to maximize throughput capacity for high data rate signals. Along the same lines, the impedances of traces and the interface are matched to reduce I/Q imbalance. | 12-22-2011 |
20120008610 | MIXED MODE PREAMBLE FOR MIMO WIRELESS COMMUNICATIONS - A preamble of a frame for a multiple input multiple output (MIMO) wireless communication for a first transmit antenna of the MIMO communication includes a legacy preamble portion in accordance with a legacy wireless communication protocol. The preamble of the frame for the MIMO wireless communication for the first transmit antenna also includes a current protocol preamble portion in accordance with a protocol of the MIMO wireless communication. The preamble of a frame for at least a second antenna of the MIMO communication includes a cyclically shifted legacy preamble portion for the frame. The preamble of the frame for the MIMO wireless communication for the second transmit antenna also includes a second current protocol preamble portion in accordance with a protocol of the MIMO wireless communication. | 01-12-2012 |
20120014364 | WLAN TRANSMITTER HAVING HIGH DATA THROUGHPUT - A wireless local area network (WLAN) transmitter includes a baseband processing module and a plurality of radio frequency (RF) transmitters. The processing module selects one of a plurality of modes of operation based on a mode selection signal. The processing module determines a number of transmit streams based on the mode selection signal. The processing of the data further continues by converting encoded data into streams of symbols in accordance with the number of transmit streams and the mode selection signal. A number of the plurality of RF transmitters are enabled based on the mode selection signal to convert a corresponding one of the streams of symbols into a corresponding RF signal such that a corresponding number of RF signals is produced. | 01-19-2012 |
20120039324 | INITIATION OF A MIMO COMMUNICATION - The present invention provides a method and apparatus for initiating a multiple input multiple output (MIMO) communication. The method and apparatus includes processing that begins by transmitting a frame formatted in accordance with a default MIMO active transmitter-receiver antenna configuration to a target receiver. The processing continues by receiving at least one response frame from the target receiver. The processing continues by determining a number of receiver antennas of the target receiver from the at least one response frame. | 02-16-2012 |
20120058727 | UN-TETHERED WIRELESS STEREO SPEAKER SYSTEM - A wireless speaker system configured to receive stereo audio information wirelessly transmitted by an audio source including first and second loudspeakers. The first loudspeaker establishes a bidirectional secondary wireless link with the audio source for receiving and acknowledging receipt of the stereo audio information. The first and second loudspeakers communicate with each other via a primary wireless link, and the first and second loudspeakers are configured to extract first and second audio channels, respectively, from the stereo audio information. A wireless audio system including an audio source and first and second loudspeakers, each having a wireless transceiver. The first and second loudspeakers communicate via a primary wireless link. The audio source communicates audio information to the first loudspeaker via a secondary wireless link which is configured according to a standard wireless protocol. The first loudspeaker is configured to acknowledge successful reception of audio information via the secondary wireless link. | 03-08-2012 |
20120071187 | CONTROL DEVICE FOR ALLOCATING RESOURCES TO COMMUNICATION DEVICES THAT USE DIFFERING PROTOCOLS AND METHODS FOR USE THEREWITH - A control device includes at least one communication interface for communicating first control data with at least one first communication device that utilizes the millimeter wave frequency band in accordance with a first protocol and further for communicating second control data with at least one second communication device that utilizes the millimeter wave frequency band in accordance with a second protocol. A resource controller allocates resources of the millimeter wave frequency band to the at least one first communication device and the at least one second communication device based on the first control data and the second control data. | 03-22-2012 |
20120087503 | MULTI-CHANNEL AUDIO OVER STANDARD WIRELESS PROTOCOL - A wireless multi-channel audio system including an audio source with a wireless transceiver configured to communicate according to a standard wireless protocol and an audio controller, which are collectively configured to establish wireless communications with multiple audio sinks via a corresponding wireless link, to assign each audio sink a corresponding audio channel, to synchronize timing with each audio sink, and to transmit audio information for each audio channel to a corresponding audio sink via a corresponding wireless link. The audio source may inquire as to supported audio parameters, such as sample rate and audio codec, and selects a commonly supported configuration. The audio source may separate audio information into queues for each audio channel for each audio sink. The audio source transmits frames with timestamps and a common start time for synchronization, and the audio sinks use this information to synchronize timing and remain virtually synchronized with each other. | 04-12-2012 |
20120177091 | LONG TRAINING SEQUENCE FOR MIMO WLAN SYSTEMS - A method for configuring a multiple input multiple output (MIMO) wireless communication begins by generating a plurality of preambles for a plurality of transmit antennas. Each of the plurality of preambles includes a carrier detection sequence at a legacy transmit rate, a first channel sounding at the legacy transmit rate, a signal field at the legacy transmit rate, and Z−1 channel soundings at a MIMO transmit rate, where L corresponds to a number of channel soundings. The method continues by simultaneously transmitting the plurality of preambles via the plurality of transmit antennas. | 07-12-2012 |
20120190308 | TRANSCEIVER WITH PLURAL SPACE HOPPING PHASED ARRAY ANTENNAS AND METHODS FOR USE THEREWITH - A wireless transceiver includes an antenna array that transmits an outbound RF signal containing outbound data to remote transceivers and that receives an inbound RF signal containing inbound data from the remote RF transceivers, wherein the antenna array is configurable based on a control signal. An antenna configuration controller generates the control signal to configure the antenna array to hop among a plurality of radiation patterns based on a hopping sequence. An RF transceiver section generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal. In one configuration, a switching section selectively couples a selected one of the antennas in the array to the RF transceiver section, based on the control signal. In another configuration, the RF transceiver section includes an RF section for each antenna in the array. | 07-26-2012 |
20120243494 | COMMUNICATION GATEWAY SUPPORTING WLAN COMMUNICATIONS IN MULTIPLE COMMUNICATION PROTOCOLS AND IN MULTIPLE FREQUENCY BANDS - Provided is operation of a device in a plurality of frequency bands. A packet based network selects a frequency band of operation by determining a quality indicator. The WLAN further selects a communication protocol. WLAN devices include a baseband processor interface and a first radio for receiving the digital data and for transmitting RF signals in first and second frequency bands of a plurality of frequency bands, and for producing corresponding digital data to the baseband processor interface. | 09-27-2012 |
20120252511 | RECEIVER WITH HYBRID RECEPTION ESTIMATION AND METHODS FOR USE THEREWITH - A receiver includes an antenna array that generates received signals from a first remote transmitter and a second remote transmitter, the antenna array having a beam pattern that is controllable based a control signal. A plurality of receiver sections process the received signals to generate down-converted signals. A receiver processing module, generates the control signal to control the beam pattern to a first pattern during a first time period for reception from the first remote transmitter, generates a first reception estimate based on the down-converted signals during the first time period, generates the control signal to control the beam pattern to a second pattern during a second time period for reception from the second remote transmitter, generates a second reception estimate based on the down-converted signals during the second time period, and generates inbound data based on the first reception estimate and the second reception estimate. | 10-04-2012 |
20120266042 | HEADER ENCODING/DECODING - In a communication device that is operative to perform decoding, a log-likelihood ratio (LLR) circuitry operates to calculate LLRs corresponding to every bit location within a received bit sequence. This received bit sequence may include a header and a data portion (both of which may be included within a frame that also includes a preamble). The header is composed of information bits, a duplicate of those information bits (such as may be generated in accordance with repetition encoding), and redundancy bits. The header includes information corresponding to frame or data including frame length, a code type by which the data are encoded, a code rate by which the data are encoded, and a modulation by which symbols of the data are modulated. Once the header has been decoded, then the data corresponding thereto is decoded by a block decoder circuitry to make estimates of that data. | 10-18-2012 |
20120269107 | LOW POWER PROTOCOL FOR WIRELESS TERMINAL PEER-TO-PEER COMMUNICATIONS - A Wireless Local Area Network (WLAN) system based upon peer-to-peer communications. A wireless terminal for peer-to-peer communications acts either as a WLAN master or as a WLAN slave. When the wireless terminal acts a master, the wireless terminal undertakes mastering duties that include transmitting a beacon interval in the frame cycle. When the wireless terminal is not tethered to a power source, mastering duties alternate according to a round-robin WLAN mastering cycle, wherein the wireless terminal acts the WLAN master during at least one frame cycle and acts the WLAN slave during other frame cycles to conserve an untethered power source of the wireless terminal. | 10-25-2012 |
20120269135 | SIGNALING FORMAT FOR WLANS - A method for wireless communication begins by determining whether legacy devices are within a proximal region of the wireless communication. The method continues, when at least one legacy device is within the proximal region, formatting a frame to include: a legacy preamble; a signal field; an extended preamble; at least one additional signal field; at least one service field; an inter frame gap; and a data field. | 10-25-2012 |
20120288024 | ASYMMETRICAL MIMO WIRELESS COMMUNICATIONS - A method for asymmetrical MIMO wireless communication begins by determining a number of transmission antennas for the asymmetrical MIMO wireless communication. The method continues by determining a number of reception antennas for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas exceeds the number of reception antennas, using spatial time block coding for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas does not exceed the number of reception antennas, using spatial multiplexing for the asymmetrical MIMO wireless communication. | 11-15-2012 |
20120307876 | BASEBAND / RFIC INTERFACE FOR HIGH THROUGHPUT MIMO COMMUNICATIONS - Analog signal paths are utilized between a baseband processor and a radio front end to support high throughput communications for a multiple in multiple out radio transceiver that support communications over two or more antennas. Specifically, analog differential I and Q path communication signals are exchanged between a radio front end core and a baseband processor to maximize throughput capacity for high data rate signals. Along the same lines, the impedances of traces and the interface are matched to reduce I/Q imbalance. | 12-06-2012 |
20120309325 | RF MODULE CONTROL INTERFACE - Disclosed are various embodiments for an extremely high frequency transceiver employing a baseband module and a radio-frequency module. The baseband module and the radio-frequency module are connected by a coaxial cable. The coaxial cable carries a multiplexed signal that may include a direct current component, a clock reference, a control signal, and an intermediate frequency signal. The control signal encodes one or more commands for controlling the operation of the radio-frequency module. Multiple radio-frequency modules may be employed in some embodiments. | 12-06-2012 |
20120314711 | Header encoding for single carrier (SC) and/or orthogonal frequency division multiplexing (OFDM) using shortening, puncturing, and/or repetition - Header encoding for SC and/or OFDM signaling using shortening, puncturing, and/or repetition in accordance with encoding header information within a frame to be transmitted via a communication channel employs different respective puncturing patterns as applied to different portions thereof. For example, a first puncturing pattern is applied to a first portion of the frame, and a second puncturing pattern is applied to a second portion of the frame (the second portion may be a repeated version of the first portion). Shortening (e.g., by padding 0-valued bits thereto) may be made to header information bits before they undergo encoding (e.g., in an LDPC encoder). One or both of the information bits and parity/redundancy bits output from the encoder undergo selective puncturing. Moreover, one or both of the information bits and parity/redundancy bits output from the encoder may be repeated/spread before undergoing selective puncturing to generate a header. | 12-13-2012 |
20120320885 | MIXED MODE PREAMBLE FOR MIMO WIRELESS COMMUNICATIONS - A preamble of a frame for a multiple input multiple output (MIMO) wireless communication for a first transmit antenna of the MIMO communication includes a legacy preamble portion in accordance with a legacy wireless communication protocol. The preamble of the frame for the MIMO wireless communication for the first transmit antenna also includes a current protocol preamble portion in accordance with a protocol of the MIMO wireless communication. The preamble of a frame for at least a second antenna of the MIMO communication includes a cyclically shifted legacy preamble portion for the frame. The preamble of the frame for the MIMO wireless communication for the second transmit antenna also includes a second current protocol preamble portion in accordance with a protocol of the MIMO wireless communication. | 12-20-2012 |
20120321015 | PREAMBLE FORMATS FOR MIMO WIRELESS COMMUNICATIONS - A method for generating a preamble of a frame for a multiple input multiple output (MIMO) wireless communication begins by, for each transmit antenna, generating a carrier detect field. The method continues by, for a first grouping of the transmit antennas, generating a first guard interval, and at least one channel sounding field. Continuing, the method applies cyclical shift prior to transmission via the first grouping of the transmit antennas. When the MIMO wireless communication includes more than the first grouping of the transmit antennas, for another grouping of the transmit antennas. For the another grouping of the transmit antennas, generating at least one other channel sounding field. The method proceeds by generating the first guard interval prior to the at least one other channel sounding field, and applying another cyclical shift prior to transmission via the another grouping of the transmit antennas. | 12-20-2012 |
20130016709 | INITIATION OF A MIMO COMMUNICATION - The present invention provides a method and apparatus for initiating a multiple input multiple output (MIMO) communication. The method and apparatus includes processing that begins by transmitting a frame formatted in accordance with a default MIMO active transmitter-receiver antenna configuration to a target receiver. The processing continues by receiving at least one response frame from the target receiver. The processing continues by determining a number of receiver antennas of the target receiver from the at least one response frame. | 01-17-2013 |
20130039313 | TRANSMISSION OF WIDE BANDWIDTH SIGNALS IN A NETWORK HAVING LEGACY DEVICES - A method for generating a preamble of a frame for a wide-bandwidth channel wireless communication begins by generating a legacy carrier detect field. The method continues by generating a channel sounding field, wherein the channel sounding field includes a plurality of tones within the wide-bandwidth channel, wherein a first set of the plurality of tones corresponds to tones of a legacy channel sounding field. The method continues by generating a legacy signal field, wherein, in time, the legacy signal field follows the channel sounding field, which follows the legacy carrier detect field. | 02-14-2013 |
20130088992 | HIGH DATA THROUGHPUT WIRELESS LOCAL AREA NETWORK RECEIVER - A method for receiving a frame in a high data throughput wireless local area network begins by receiving a preamble of the frame via a channel in accordance with a default receiver filter mask. The processing continues by validating the preamble. The processing continues by, when the preamble is validated, interpreting the preamble to determine a high data throughput channel configuration. The processing continues by reconfiguring the default receiver filter mask in accordance with the high data throughput channel configuration to produce a reconfigured receiver filter mask. The processing continues by receiving a data segment of the frame in accordance with the reconfigured receiver filter mask. | 04-11-2013 |
20130089054 | MIMO WIRELESS COMMUNICATION GREENFIELD PREAMBLE FORMATS - A method for multiple input multiple output wireless communication begins by determining protocols of wireless communication devices within a proximal region. The method continues by determining whether the protocols of the wireless communication devices within the proximal region are of a like protocol. The method continues by determining the number of transmit antennas. The method continues, when the protocols of the wireless communication devices within the proximal region are of the like protocol, formatting a preamble of a frame of the wireless communication utilizing at least one of cyclic shifting of symbols, cyclic shifting of tones, sparse tone allocation, and sparse symbol allocation based on the number of transmit antennas. | 04-11-2013 |
20130129000 | Feedback of Channel Information in a Closed Loop Beamforming Wireless Communication System - A method for feeding back transmitter beamforming information from a receiving wireless communication device to a transmitting wireless communication device includes a receiving wireless communication device receiving a preamble sequence from the transmitting wireless device. The receiving wireless device estimates a channel response based upon the preamble sequence and then determines an estimated transmitter beamforming unitary matrix based upon the channel response and a receiver beamforming unitary matrix. The receiving wireless device then decomposes the estimated transmitter beamforming unitary matrix to produce the transmitter beamforming information and then wirelessly sends the transmitter beamforming information to the transmitting wireless device. | 05-23-2013 |
20130136061 | LOW-RATE LONG-RANGE MODE FOR OFDM WIRELESS LAN - A system for implementing an orthogonal frequency division multiplexing scheme and providing an improved range extension. The system includes a transmitter for transmitting data to a receiver. The transmitter includes a symbol mapper for generating a symbol for each of a plurality of subcarriers and a spreading module for spreading out the symbol on each of the plurality of subcarriers by using a direct sequence spread spectrum. The symbol on each of the plurality of subcarriers is spread by multiplying the symbol by predefined length sequences. The receiver includes a de-spreader module for de-spreading the symbols on each of the plurality of subcarriers. The de-spreader module includes a simple correlator receiver for obtaining maximum detection. The correlator produces an output sequence of a same length as an input sequence and the de-spreader module uses a point of maximum correlation on the output sequence to obtain a recovered symbol. | 05-30-2013 |
20130137385 | TRANSCEIVER WITH PLURAL SPACE HOPPING ARRAY ANTENNAS AND METHODS FOR USE THEREWITH - A wireless transceiver includes an antenna array that transmits an outbound RF signal containing outbound data to remote transceivers and that receives an inbound RF signal containing inbound data from the remote RF transceivers, wherein the antenna array is configurable based on a control signal. An antenna configuration controller generates the control signal to configure the antenna array to hop among a plurality of radiation patterns based on a hopping sequence. An RF transceiver section generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal. In one configuration, a switching section selectively couples a selected one of the antennas in the array to the RF transceiver section, based on the control signal. In another configuration, the RF transceiver section includes an RF section for each antenna in the array. | 05-30-2013 |
20130179756 | Selective merge and partial reuse LDPC (Low Density Parity Check) code construction for limited number of layers Belief Propagation (BP) decoding - Selective merge and partial reuse LDPC (Low Density Parity Check) code construction for limited number of layers Belief Propagation (BP) decoding. Multiple LDPC matrices may be generated from a base code, such that multiple/distinct LDPC coded signals may be encoded and/or decoded within a singular communication device. Generally speaking, a first LDPC matrix is modified in accordance with one or more operations thereby generating a second LDPC matrix, and the second LDPC matrix is employed in accordance with encoding an information bit thereby generating an LDPC coded signal (alternatively performed using an LDPC generator matrix corresponding to the LDPC matrix) and/or decoding processing of an LDPC coded signal thereby generating an estimate of an information bit encoded therein. The operations performed on the first LDPC matrix may be any one of, or combination of, selectively merging, deleting, partially re-using one or more sub-matrix rows, and/or partitioning sub-matrix rows. | 07-11-2013 |
20130212218 | METHOD AND SYSTEM FOR DISTRIBUTED INFRASTRUCTURE FOR STREAMING DATA VIA MULTIPLE ACCESS POINTS - Methods and systems for distributed infrastructure for streaming data via multiple access points. Aspects of one method may include apportioning multimedia information among a plurality of transmitting devices based on feedback channel information received from a destination receiving device by, for example, a transmission controller device. The transmitting devices may transmit the multimedia information to the destination receiving device. A transmitting device that may not be apportioned multimedia information may transmit a probing signal. The destination receiving device may generate feedback channel information for a transmitting device, for example, based on the multimedia information or the probing signal received from the respective transmitting device. The apportioning of the multimedia information may be dynamically adjusted based on updated feedback channel information received from the destination receiving device. | 08-15-2013 |
20130223561 | LDPC coding systems for 60 GHz millimeter wave based physical layer extension - LDPC coding systems for 60 GHz millimeter wave based physical layer extension. LDPC (Low Density Parity Check) encoding in cooperation with sub-carrier interleaving, in the context of orthogonal frequency division multiplexing (OFDM), and appropriate symbol mapping is performed in accordance with transmit processing as may be performed within a communication device. In a receiving communication device, receive processing may be performed on a received signal based on the type of LDPC, sub-carrier interleaving, and symbol mapping thereof. The LDPC code employed in accordance with such LDPC encoding may have a partial-tree like structure. In addition, appropriate manipulation of the bits assigned to respective sub-carriers may be performed to ensure that the bits emplaced in the MSB (Most Significant Bit) location of various symbols has some desired diversity (e.g., from different codewords, from appropriately different locations within a given codeword, etc.). | 08-29-2013 |
20130238953 | Communication device architecture for in-place constructed LDPC (Low Density Parity Check) code - Communication device architecture for in-place constructed LDPC (Low Density Parity Check) code. Intelligent design of LDPC codes having similar characteristics there between allows for a very efficient hardware implementation of a communication device that is operative to perform encoding of respective information bit groups using more than one type of LDPC codes. A switching module can select any one of the LDPC codes within an in-place LDPC code for use by an LDPC encoder circuitry to generate an LDPC coded signal. Depending on which sub-matrices of a superimposed LDPC matrix are enabled or disabled, one of the LDPC matrices from within an in-place LDPC code matrix set may be selected. A corresponding, respective generator matrix may be generated from each respective LDPC matrix. Selection among the various LDPC codes may be in accordance with a predetermined sequence, of based operating conditions of the communication device or communication system. | 09-12-2013 |
20130259169 | RECEIVER WITH HYBRID RECEPTION ESTIMATION AND METHODS FOR USE THEREWITH - A receiver includes an antenna array that generates received signals from a first remote transmitter and a second remote transmitter, the antenna array having a beam pattern that is controllable based a control signal. A plurality of receiver sections process the received signals to generate down-converted signals. A receiver processing module, generates the control signal to control the beam pattern to a first pattern during a first time period for reception from the first remote transmitter, generates a first reception estimate based on the down-converted signals during the first time period, generates the control signal to control the beam pattern to a second pattern during a second time period for reception from the second remote transmitter, generates a second reception estimate based on the down-converted signals during the second time period, and generates inbound data based on the first reception estimate and the second reception estimate. | 10-03-2013 |
20130286914 | LOW POWER PROTOCOL FOR WIRELESS TERMINAL PEER-TO-PEER COMMUNICATIONS - A Wireless Local Area Network (WLAN) system based upon peer-to-peer communications. A wireless terminal for peer-to-peer communications acts either as a WLAN master or as a WLAN slave. When the wireless terminal acts a master, the wireless terminal undertakes mastering duties that include transmitting a beacon interval in the frame cycle. When the wireless terminal is not tethered to a power source, mastering duties alternate according to a round-robin WLAN mastering cycle, wherein the wireless terminal acts the WLAN master during at least one frame cycle and acts the WLAN slave during other frame cycles to conserve an untethered power source of the wireless terminal. | 10-31-2013 |
20130308486 | HIGH DATA THROUGHPUT WIRELESS LOCAL AREA NETWORK RECEIVER - A method for receiving a frame in a high data throughput wireless local area network begins by receiving a preamble of the frame via a channel in accordance with a default receiver filter mask. The processing continues by validating the preamble. The processing continues by, when the preamble is validated, interpreting the preamble to determine a high data throughput channel configuration. The processing continues by reconfiguring the default receiver filter mask in accordance with the high data throughput channel configuration to produce a reconfigured receiver filter mask. The processing continues by receiving a data segment of the frame in accordance with the reconfigured receiver filter mask. | 11-21-2013 |
20140219264 | METHOD AND SYSTEM FOR COMPROMISE GREENFIELD PREAMBLES FOR 802.11N - Aspects of the invention described herein may enable a greenfield access mode in IEEE 802.11n WLAN systems in comparison to an alternative approach that may not provide greenfield access. The utilization of greenfield access may reduce the portion of time required to transmit data due to overhead comprising preamble fields and header fields. This may enable higher data throughput rates to be achieved. This may further enable more robust transmission of data by enabling comparable data rates to be maintained while reducing the coding rate of encoded transmitted data. The reduction of the coding rate may enable comparable data rates to be maintained for transmission via RF channels characterized by lower SNR while still achieving desired target levels of packet error rates. In another aspect of the invention, mixed mode access may be achieved while reducing the portion of time required for transmitting data due to overhead. | 08-07-2014 |
20140329468 | UN-TETHERED WIRELESS AUDIO SYSTEM - A wireless speaker audio system configured to receive audio information wirelessly transmitted by an audio source including first and second wireless transceivers. The first wireless transceiver establishes a bidirectional secondary wireless link with the audio source for receiving and acknowledging receipt of the audio information. The first and second wireless transceivers communicate with each other via a primary wireless link. A wireless audio system including an audio source and first and second wireless transceivers. The first and second wireless transceivers communicate via a primary wireless link. The audio source communicates audio information to the first wireless transceiver via a secondary wireless link which is configured according to a standard wireless protocol. The first wireless transceiver is configured to acknowledge successful reception of audio information via the secondary wireless link. | 11-06-2014 |