Patent application number | Description | Published |
20100158154 | METHOD AND APPARATUS FOR GENERATING PREDISTORTION SIGNAL - Provided is a digital predistortion linearizer applicable to millimeter-wave band point-to-point communications. The digital predistortion linearizer includes a transmission unit and a reception unit. The reception unit receives a first signal including a transmission signal and a distortion signal through a millimeter-wave propagation environment, detects the distortion signal from the first signal, and transmits information on the detected distortion signal with the first signal to the transmission unit. The transmission unit generates a predistortion signal using the information on the distortion signal and the first signal received from the reception unit, couples the generated predistortion signal with the transmission signal, and outputs the coupled signal. | 06-24-2010 |
20110073183 | REFLECT-ARRAY LENS FOR SOLAR CELL AND SOLAR CELL MODULE HAVING REFLECT-ARRAY LENS - Disclosed are a reflect-array lens (or a planar lens) and a solar cell module having the same. The reflect-array lens for a solar cell includes: a planar dielectric substrate having a first permittivity, wherein a plurality of recesses are formed on one surface of the planar dielectric substrate and filled with a dielectric having a second permittivity different from the first permittivity. The reflect-array lens can be easily fabricated and has an excellent concentration degree, and the solar cell module having the reflect-array lens has improved photoelectric conversion efficiency. | 03-31-2011 |
20110128096 | SYSTEM AND METHOD FOR MODIFYING HAIRPIN FILTER, AND HAIRPIN FILTER - A system for modifying a hairpin filter is provided which includes a structure transformer to divide a hairpin filter into a plurality of filters and to arrange the plurality of filters in a bilaterally symmetrical pattern, and a coupling generator to generate a plurality of coupling lines, each of the plurality of coupling lines being between each of the filters. | 06-02-2011 |
20110150131 | APPARATUS AND METHOD FOR PROCESSING DIGITAL TRANSMISSION/RECEPTION SIGNALS TO CORRECT IN-BAND GAIN FLATNESS - An apparatus for processing a digital transmission signal for a transmitter includes a transmission Finite Impulse Response (FIR) filter to perform shaping on initial setting data to convert the initial setting data into a signal having a predetermined passband, a comparator to compare the signal with data including degradation information provided as feedback by a receiver corresponding to the transmitter, to generate a control signal, and a band flatness correction filter to adjust a coefficient of the band flatness correction filter in response to the control signal, and to correct an in-band flatness. | 06-23-2011 |
20110249769 | METHOD AND APPARATUS OF COMPENSATION FOR AMPLITUDE AND PHASE DELAY USING SUB-BAND POLYPHASE FILTER BANK IN BROADBAND WIRELESS COMMUNICATION SYSTEM - Provided is a method and apparatus improving a deterioration of a gain flatness and a phase characteristic that may be incurred while a baseband signal is transformed into a immediate frequency (IF) signal and a radio frequency (RF) signal in a broadband wireless communication system. A sub-band extractor may divide the broadband signal into multiple sub-band signals, may pre-compensate for a gain and a phase delay of each sub-band signals in the baseband, and may combine the pre-compensated sub-band signals into the single broadband signal and thus, the deterioration of the gain flatness and a phase delay flatness that may be incurred while the broadband signal is transformed into the IF signal and the RF to signal, may be improved. | 10-13-2011 |
20120154207 | APPARATUS AND METHOD FOR SCANNING IMAGE IN IMAGE PROCESSING SYSTEM - Disclosed is an image scanning apparatus in an image processing system, including: a frequency signal generator configured to synthesize at least two single frequency signals; a frequency up converter configured to up-convert and transmit the synthesized single frequency signals; a frequency down converter configured to down-convert and receive frequency signals reflected from an object by the up-converted frequency signals; a frequency sorter configured to sort the down-converted frequency signals so as to correspond to the at least two single frequency signals; a multiple frequency processor configured to generate a transfer function by performing parallel processing on each of the sorted frequency signals; and an image processing unit configured to generate an image of the object by using the transfer function. | 06-21-2012 |
20120155746 | ADAPTIVE HIGH SPEED/HIGH RESOLUTION 3D IMAGE RECONSTRUCTION METHOD FOR ANY MEASUREMENT DISTANCE - Disclosed is a method for performing a 3D image reconstruction at a high speed and high resolution, regardless of a measurement distance. Specifically, a weight for image reconstruction is previously set, and a 3D image reconstruction algorithm is performed at a high speed, without reducing a resolution, by a parallel processing for image reconstruction, a computation of a partial region using a database based on a measurement result, and a generation of a variable pulse waveform. | 06-21-2012 |
20120157021 | APPARATUS AND METHOD FOR WIRELESSLY TRANSMITTING AND RECEIVING ENERGY AND DATA - Disclosed is an apparatus for wirelessly transmitting and receiving energy and data including: a signal generator generating a first frequency signal for power transmission; a first matching circuit matching input/output impedance upon receiving the first frequency signal generated by the signal generator; an oscillator outputting a second frequency signal, a carrier frequency, by using the first frequency signal, generated by the signal generator, as a reference frequency; a mixer modulating a data signal output from a communication module by using the second frequency signal; a second matching circuit matching input/output impedance upon receiving a modulated signal by using the second frequency signal; a resonator resonating an output signal from the first matching circuit to a reception side apparatus; and a radiator radiating an output signal from the second matching circuit to the reception side apparatus. | 06-21-2012 |
20120163499 | APPARATUS, METHOD, AND SYSTEM FOR TRANSMITTING AND RECEIVING HIGH-SPEED DATA IN POINT-TO-POINT FIXED WIRELESS COMMUNICATION - Disclosed are an apparatus, method, and system for transmitting and receiving high-speed data in point-to-point (P2P) fixed wireless communication. In an apparatus for transmitting high-speed data in P2P fixed wireless communication, an amplitude zero autocorrelation waveform (CAZAC) sequence generator generates and outputs a CAZAC sequence. A frame generator generates a frame in which the CAZAC sequence is arranged as part of a preamble before a payload including actual data. A continuous wave (CW) generator generates and outputs a CW signal. A multiplexer receives the CW signal output by the CW generator, and arranges and outputs the CW signal in a position before a signal output by the frame generator. | 06-28-2012 |
20120165647 | APPARATUS FOR MEASURING SIZES OF HUMAN BODY USING MILLIMETER WAVES - Disclosed is an apparatus for measuring sizes of a human body, such as the length of an arm, the size of a waist and the width of a shoulder, in the state that a person does not take off its clothes, using millimeter waves. The apparatus includes a plurality of millimeter-wave transmission/reception units, a rotation unit and a digital signal processing unit. The plurality of millimeter-wave transmission/reception units are arranged in a circular shape around an object to be measured, transmit a millimeter wave to the object to be measured, and receive a signal reflected or scattered by the object to be measured. The rotation unit rotates a circular structure in which the plurality of millimeter-wave transmission/reception units are arranged. The digital signal processing unit analyzes the object to be measured using size and phase information of the signal received by the plurality of millimeter-wave transmission/reception units. | 06-28-2012 |
20130257174 | APPARATUS AND METHOD FOR WIRELESSLY TRANSMITTING AND RECEIVING ENERGY AND DATA - A method for wirelessly receiving energy and data, including: a resonation operation of resonating a first frequency power signal transmitted from a transmission apparatus; a reception operation of receiving a second frequency data signal transmitted from the transmission apparatus; a first matching operation of matching input/output impedance upon receiving the first frequency power signal; a rectification operation of rectifying impedance-matched power signal from the first matching operation into a DC current; a second matching operation of matching input/output impedance upon receiving the second frequency data signal; an oscillation operation of outputting a second frequency signal by using the first frequency signal output from the resonation operation, as a reference frequency; and a frequency mixing operation of mixing the impedance-matched data signal from the second matching operation with the signal output from the oscillation operation to restore a baseband data signal. | 10-03-2013 |
20130322330 | COMMUNICATION APPARATUS AND METHOD FOR GROUP MOVING OBJECT IN COMMUNICATION SYSTEM - A communication apparatus for a group moving object in a communication system includes a Radio Frequency (RF) transmission/reception unit configured to simultaneously set up links with two or more Base Stations (BSs) placed on right and left sides of a road or a track, a baseband unit configured to perform baseband signal processing on signals transmitted and received through the RF transmission/reception unit, and a network interface unit connected to the baseband unit and configured to establish an Ethernet connection for providing communication service to devices within the group moving object. | 12-05-2013 |
20130322497 | DATA TRANSMISSION/RECEPTION APPARATUS IN DATA COMMUNICATION SYSTEM - A data transmission/reception apparatus in a data communication system includes a transmission/reception unit connected to a device within a board and configured to wirelessly transmit transmission data from the device within the board to another device placed in one of other boards outside the board or another device placed in the board and wirelessly receive reception data from the another device, wherein the transmission/reception unit transmits the transmission data and receives the reception data using millimeter wave bands. | 12-05-2013 |
20140064339 | APPARATUS FOR TRANSMITTING AND RECEIVING SIGNAL IN COMMUNICATION SYSTEM - Disclosed uses a digital to analog converter and an analog to digital converter that process a low bit for processing of a data signal at high speed according to analog to digital conversion and digital to analog conversion in a communication system and an analog to digital converter that processes high bit for processing of a signal for synchronization acquisition at low speed. | 03-06-2014 |
20140153502 | WIRELESS LINK METHOD AND SYSTEM USING MULTIBAND - Provided is a wireless link system using a multiband, the system including: a common baseband module to operate in a first frequency band and a second frequency band higher than the first frequency band; at least one low radio frequency (RF) module to process a signal output from the common baseband module in the first frequency band; at least one high RF module to process a signal output from the common baseband module in the second frequency band; a plurality of antennas electrically connected to the at least one low RF module and the at least one high RF module; and a control unit to adaptively allocate a control signal and data to the at least one low RF module and the at least one high RF module based on state information of a wireless channel. | 06-05-2014 |
20140162652 | SYSTEM AND METHOD FOR HANDOVER AND POWER CONTROL FOR WIRELESS COMMUNICATION OF HIGH-SPEED MOBILE - Provided is a method for handover for wireless communication of a high-speed mobile. The method may include receiving, from a candidate communication base station able to communicate with the high-speed mobile, location information of the candidate communication base station and location information of a neighboring communication base station near the candidate communication base station, obtaining current location information and speed information of the high-speed mobile based on global positioning system (GPS) satellite information of the high-speed mobile and topographic information around the high-speed mobile, determining an optimal communication base station among the candidate communication base station and the neighboring communication base station, based on the location information of the candidate communication base station, the location information of the neighboring communication base station, the current location information of the high-speed mobile, and the speed information of the high-speed mobile, and executing handover to the optimal communication base station. | 06-12-2014 |
20140254726 | ANTENNA SWITCHING APPARATUS BASED ON SPATIAL MODULATION - An antenna switching apparatus based on spatial modulation includes a plurality of antennas; a control signal generator configured to generate a plurality of switching control signals; and a plurality of switches configured to switch on to apply a transmission signal to the respective antennas according to the respective switching control signals. Further, the antenna switching apparatus includes a delay analyzer configured to receive the transmission signal output from each of the plurality of switches to calculate delay information for synchronizing the switching control signals applied to the respective switches; and a delay adjuster configured to synchronize the switching control signals to apply the synchronized switching control signals to the respective switches according to the calculated delay information. | 09-11-2014 |
20140286449 | WIRELESS LINK APPARATUS - A wireless link apparatus includes a plurality of antennas; a signal detector configured to calculate SNR based on a signal received from at least one of the plurality of antennas; and a mode selector configured to determine the number of an antenna to be used in modulation method and signal transmission by comparing the calculated SNR with a preset critical value. Further, the wireless link apparatus includes a transmitter configured to modulate a signal in the modulation method determined by the mode selector and transmit the modulated signal using an antenna corresponding to the determined number of the antennas. | 09-25-2014 |
20140333503 | REFLECTARRAY ANTENNA FOR WIRELESS TELECOMMUNICATION AND STRUCTURE THEREOF - A reflectarray antenna for wireless telecommunication includes a ground plane; a dielectric substrate attached on the ground plane; and a first antenna patch formed on one side of the dielectric substrate. Further, the reflectarray antenna includes a second antenna patch formed adjacent to the first antenna patch with a separation area therebetween; and a phase adjustment member disposed in the separation area to adjust a phase of a scattered field of the antenna by the appliance of a DC voltage. | 11-13-2014 |
20140334284 | TRANSMITTER AND RECEIVER FOR WIRELESS COMMUNICATION USING REVOLUTION DIVISION MULTIPLEXING, AND SIGNAL TRANSMISSION AND RECEPTION METHOD THEREOF - A signal transmission and reception method includes generating a plurality of electromagnetic wave mode functions having orthogonality in a spatial domain using a plurality of input signals, synthesizing and wirelessly transmitting the generated electromagnetic wave mode functions, receiving a revolution division multiplexing electromagnetic wave having characteristics of phase rotation in directions of an azimuth angle and an elevation angle, and discriminating the electromagnetic wave mode functions through an orthogonal operation, and restoring an output signal through correction of the discriminated electromagnetic wave mode functions. | 11-13-2014 |