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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
7733940 Method and apparatus for signal receipt and acquisition Jun. 8, 2010
7729238 Method for adjusting FFT window positioning in MB-OFDM UWB system Jun. 1, 2010
7724637 Method and apparatus for controlled spectrum multi-carrier modulation May. 25, 2010
7720173 Apparatus and method for transmitting/receiving data in multi-user multi-antenna communication system May. 18, 2010
7720162 Partial FFT processing and demodulation for a system with multiple subcarriers May. 18, 2010
7720013 Method and system for classifying digital traffic May. 18, 2010
7719954 Apparatus and method for measuring noises in a wireless communication system May. 18, 2010
7715484 Orthogonal frequency division multiplexing with PN-sequence May. 11, 2010
7715305 Data detection method and receiver May. 11, 2010
7711058 Determination of the time delay and/or power of a multicarrier signal May. 4, 2010
7710858 Apparatus, system, and method for sample timing synchronization in a receiver May. 4, 2010
7706428 Low complexity inter-carrier interference cancellation Apr. 27, 2010
7701842 Low conversion rate digital dispersion compensation Apr. 20, 2010
7701841 OFDM demodulating apparatus and method Apr. 20, 2010
7697414 System and method for achieving crest factor reduction for multi-carrier modulation in a wireless communication network Apr. 13, 2010
7697411 OFDM broadcast system for transporting streams of data Apr. 13, 2010
7697410 Centralized buffer architecture for an orthogonal frequency division multiplexing (OFDM) receiver Apr. 13, 2010
7697409 Transmitter apparatus and method for transmitting packet data units in a communication system Apr. 13, 2010
7693228 Channel estimation for orthogonal preambles in a MIMO system Apr. 6, 2010
7693225 Inter-symbol and inter-carrier interference canceller for multi-carrier modulation receivers Apr. 6, 2010
7693129 Method and system for frame and frequency synchronization in packet-based orthogonal frequency division multiplexing Apr. 6, 2010
7693036 Decision feedback channel estimation and pilot tracking for OFDM systems Apr. 6, 2010
7693034 Combined inverse fast fourier transform and guard interval processing for efficient implementation of OFDM based systems Apr. 6, 2010
7688904 Generating signals for transmission of information Mar. 30, 2010
7688899 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion Mar. 30, 2010
7688711 Method and apparatus for transforming a digital audio signal and for inversely transforming a transformed digital audio signal Mar. 30, 2010
7688710 Adaptive time diversity and spatial diversity for OFDM Mar. 30, 2010
7684379 OFDMA system and method for controlling frequency offsets of subscribers in uplink communication Mar. 23, 2010
7684313 System and method for FFT window timing synchronization for an orthogonal frequency-division multiplexed data stream Mar. 23, 2010
7684312 Method and apparatus for fast FFT processing of paging information Mar. 23, 2010
7680475 Dynamic ASBR scheduler Mar. 16, 2010
7680026 Method and apparatus for improving reception in wireless networks subjected to neighboring cells' interferences Mar. 16, 2010
7675989 Method and apparatus for uplink carrier frequency synchronization and antenna weight vector estimation in OFDMA system having smart antenna Mar. 9, 2010
7675986 Method for reducing peak-to-average power ratios in a multi-carrier transmission system Mar. 9, 2010
7675894 Method for sending channel quality information in a multi-carrier radio communication system, corresponding user terminal and base station Mar. 9, 2010
7675888 Orthogonal frequency division multiplexing access (OFDMA) ranging Mar. 9, 2010
7675847 Hardware implementation of a programmable FFT based on a half length FFT core Mar. 9, 2010
7675846 Method and system for using the synchronization channel to obtain measurements in a cellular communications system Mar. 9, 2010
7672409 Base station software for multi-user detection uplinks and downlinks and method thereof Mar. 2, 2010
7672382 OFDM receiving method and apparatus Mar. 2, 2010
7672221 Radio receiver and radio signal receiving method Mar. 2, 2010
7672220 Apparatus and method of multiple antenna receiver combining of high data rate wideband packetized wireless communication signals Mar. 2, 2010
7668266 Crest factor reduction in OFDM using blind selected pilot tone modulation Feb. 23, 2010
7668247 Methods and systems for performing an overlap-and-add operation Feb. 23, 2010
7668246 Apparatus, method and computer program for correcting common phase error of OFDM signal symbols Feb. 23, 2010
7668075 Versatile system for dual carrier transformation in orthogonal frequency division multiplexing Feb. 23, 2010
7664339 Image processing method for object recognition and dynamic scene understanding Feb. 16, 2010
7664187 Memory reduction in digital broadcast receivers Feb. 16, 2010
7664162 High-frequency wireless peripheral device with auto-connection and auto-synchronization Feb. 16, 2010
7653085 Methods and apparatus for enhanced delivery of content over data network Jan. 26, 2010

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