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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
7039370 Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems May. 2, 2006
7027464 OFDM signal transmission scheme, and OFDM signal transmitter/receiver Apr. 11, 2006
7023265 Equalizing method in receivers using a combination of multiple carrier and code division multiple access modulating techniques Apr. 4, 2006
7023324 Power-line carrier communication apparatus Apr. 4, 2006
7023928 Synchronization of a pilot assisted channel estimation orthogonal frequency division multiplexing system Apr. 4, 2006
7023929 Digital pre-compensation filter for DMT type transmitter Apr. 4, 2006
7020071 Methods and apparatus for wireless communication using orthogonal frequency division multiplexing Mar. 28, 2006
7020074 Synchronization method and apparatus for frequency division multiplexed telecommunication systems Mar. 28, 2006
7020226 I/Q distortion compensation for the reception of OFDM signals Mar. 28, 2006
7016651 Apparatus and method for measuring signal quality of a wireless communications link Mar. 21, 2006
7010027 Multistandard discrete multi-tone (DMT) digital subscriber line (DSL) system Mar. 7, 2006
7006430 Receiver, receiving method, and recording medium which records program for receiving data signals Feb. 28, 2006
7002897 Multiple channel interference cancellation Feb. 21, 2006
7002904 Method and apparatus for reducing peak power in partial transmit sequence OFDM Feb. 21, 2006
6999503 Partial response signaling for orthogonal frequency division multiplexing Feb. 14, 2006
6999756 Apparatus for processing call of wireless LAN using callback function and method thereof Feb. 14, 2006
6996418 Apparatus and method for OFDM data communications Feb. 7, 2006
6992972 Frequency division multiplexing system with selectable rate Jan. 31, 2006
6992973 Transmitting apparatus, receiving apparatus, communication system, transmission method, reception method, and communication method Jan. 31, 2006
6990060 Polyphase-discrete fourier transform (DFT) sub-band definition filtering architecture Jan. 24, 2006
6990061 Method and apparatus for channel estimation Jan. 24, 2006
6990062 Reduced complexity DMT/OFDM transceiver Jan. 24, 2006
6985434 Adaptive time diversity and spatial diversity for OFDM Jan. 10, 2006
6985533 Method and apparatus for reducing peak to average power ratio in a multi-carrier modulation communication system Jan. 10, 2006
6982949 Vertical roaming in wireless networks through improved wireless network cell boundary detection Jan. 3, 2006
6977884 Transmitting apparatus, receiving apparatus, communication system, transmission method, reception method, and communication method Dec. 20, 2005
6975583 Technique for continuous OFDM modulation Dec. 13, 2005
6975585 Slotted synchronous frequency division multiplexing for multi-drop networks Dec. 13, 2005
6973118 Digital broadcasting apparatus Dec. 6, 2005
6965630 Mode Controller for signal acquisition and tracking in an ultra wideband communication system Nov. 15, 2005
6965632 Method and apparatus for using adaptive threshold with initial acquisition Nov. 15, 2005
6959036 Method and apparatus for an X-DSL modem supporting multiple X-DSL line codes Oct. 25, 2005
6956812 Reception apparatus Oct. 18, 2005
6956814 Method and apparatus for mobile platform reception and synchronization in direct digital satellite broadcast system Oct. 18, 2005
6956815 Method and apparatus using pseudo-inverses of linear transformations in multi-carrier modulation receivers and transceivers Oct. 18, 2005
6954420 Method for displaying the modulation error of a multiple carrier signal Oct. 11, 2005
6954423 Analog implementation of linear transforms Oct. 11, 2005
6952394 Method for transmitting and receiving orthogonal frequency division multiplexing signal and apparatus therefor Oct. 4, 2005
6950389 Peak-to-average power reduction in an orthogonal frequency division multiplexing system Sep. 27, 2005
6944122 Modulator, demodulator, and transmission system for use in OFDM transmission Sep. 13, 2005
6940807 Method and apparatus for a X-DSL communication processor Sep. 6, 2005
6940828 Apparatus, and associated method, for transforming data in an OFDM communication system Sep. 6, 2005
6937644 Generalized two-stage data estimation Aug. 30, 2005
6937665 Method and apparatus for multi-user transmission Aug. 30, 2005
6914876 Method for dynamic frequency selection Jul. 5, 2005
6904036 Single user detection base station Jun. 7, 2005
6898176 Communications terminal and operating method May. 24, 2005
6891792 Method for estimating time and frequency offset in an OFDM system May. 10, 2005
6888789 Transmitting apparatus, receiving apparatus, communication system, transmission method, reception method, and communication method May. 3, 2005
6885654 Low complexity data detection using fast fourier transform of channel correlation matrix Apr. 26, 2005

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