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Class Information
Number: 370/210
Name: Multiplex communications > Generalized orthogonal or special mathematical techniques > Fourier transform
Description: Subject matter utilizing a special mathematical relationship that provides a connection between information in the frequency domain and the time domain.










Patents under this class:
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Patent Number Title Of Patent Date Issued
6885712 Methods and devices for minimizing interblock interference using an optimum time of reference Apr. 26, 2005
6882618 Transmitting apparatus, receiving apparatus, communication system, transmission method, reception method, and communication method Apr. 19, 2005
6882619 Interference suppressing OFDM method for wireless communications Apr. 19, 2005
6879578 Single user detection user equipment Apr. 12, 2005
6876672 Method of transmitting data on multiple carriers from a transmitter to a receiver and receiver designed to implement the said method Apr. 5, 2005
6876675 Synchronization in OFDM systems Apr. 5, 2005
6873596 Fourier-transform based linear equalization for CDMA downlink Mar. 29, 2005
6870808 Channel allocation in broadband orthogonal frequency-division multiple-access/space-division multiple-access networks Mar. 22, 2005
6868056 Apparatus and method for OFDM communication Mar. 15, 2005
6862261 Zipper type VDSL system Mar. 1, 2005
6862262 OFDM communication device and detecting method Mar. 1, 2005
6862451 Cellular radio signal with additional channel assigned to downlink, corresponding method, system and base station Mar. 1, 2005
6856590 OFDM transmission device and OFDM transmission method Feb. 15, 2005
6853616 Orthogonal frequency division multiplexing receiver where FFT Window position recovery interlocks with sampling clock adjustment and method thereof Feb. 8, 2005
6850481 Channels estimation for multiple input--multiple output, orthogonal frequency division multiplexing (OFDM) system Feb. 1, 2005
6847314 Method for coding integer supporting diverse frame sizes and CODEC implementing the method Jan. 25, 2005
6845082 Peak to average power ratio reduction in communication systems Jan. 18, 2005
6816453 Communication system using orthogonal frequency division multiplexed signal Nov. 9, 2004
6804192 OFDM/DMT digital communications system including partial sequence symbol processing Oct. 12, 2004
6798738 FFT window position recovery apparatus and method for OFDM system receiver Sep. 28, 2004
6795392 Clustered OFDM with channel estimation Sep. 21, 2004
6795426 Realtime power control in OFDM systems Sep. 21, 2004
6785300 Delay compensation Aug. 31, 2004
6781951 Radio communication system Aug. 24, 2004
6771591 Method and system for processing orthogonal frequency division multiplexed signals Aug. 3, 2004
6768713 Orthogonal frequency division multiplexing receiver with iterative channel estimation and a corresponding method Jul. 27, 2004
6760300 High speed wireless OFDM transceiver modem Jul. 6, 2004
6757241 System for interference cancellation Jun. 29, 2004
6751187 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmission Jun. 15, 2004
6751263 Method for the orthogonal frequency division modulation and demodulation Jun. 15, 2004
6747945 OFDM transmitting and receiving apparatus and OFDM transmitting and receiving method Jun. 8, 2004
6747946 Method and apparatus for transmitting orthogonal-multi-carrier signal Jun. 8, 2004
6747948 Interleaver scheme in an OFDM system with multiple-stream data sources Jun. 8, 2004
6748234 Method and apparatus for power control in a wireless communication system Jun. 8, 2004
6741551 Hybrid TDMA/CDMA system based on filtered multitone modulation May. 25, 2004
6735167 Orthogonal transform processor May. 11, 2004
6735221 Communication network system May. 11, 2004
6731595 Multi-carrier modulation and demodulation system using a half-symbolized symbol May. 4, 2004
6726297 OFDMA signal transmission apparatus and method Apr. 27, 2004
6728203 Systems and methods for selecting a cell in a communications network Apr. 27, 2004
6725045 System and method for locating personal units, notifying called parties of incoming calls and automatically routing calls to desired telephone stations Apr. 20, 2004
6714511 OFDM transmission/reception apparatus having a guard interval length changing function Mar. 30, 2004
6711123 Receiving apparatus for OFDM communication system Mar. 23, 2004
6704366 Time and frequency interleaving system for transmitting digital data between fixed or mobile stations Mar. 9, 2004
6700936 Many-carrier transmission system and a receiver therefor Mar. 2, 2004
6683864 Transmission method and transmission apparatus Jan. 27, 2004
6680901 OFDM demodulator Jan. 20, 2004
6680902 Spreading code selection process for equalization in CDMA communications systems Jan. 20, 2004
6671252 Robust signaling tone duration measurement Dec. 30, 2003
6657950 Optimal filtering and upconversion in OFDM systems Dec. 2, 2003

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