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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
7450492 Correlation detection apparatus and fourier transform apparatus Nov. 11, 2008
7443783 I/Q mismatch compensation in an OFDM receiver in presence of frequency offset Oct. 28, 2008
7436897 OFDM receiving apparatus and receiving method thereof Oct. 14, 2008
7436802 Frequency hopping method in orthogonal frequency division multiplexing system Oct. 14, 2008
7433413 Data transmission apparatus and method in an OFDM communication system Oct. 7, 2008
7433387 Multiple code-set channel estimation method in time-slotted CDMA system Oct. 7, 2008
7433382 Spread spectrum based multichannel modulation for ultra wideband communications Oct. 7, 2008
7433298 Compensation for residual frequency offset, phase noise and I/Q imbalance in OFDM modulated communications Oct. 7, 2008
7433296 Mode detection for OFDM signals Oct. 7, 2008
7430254 Matched detector/channelizer with adaptive threshold Sep. 30, 2008
7426204 Symbol synchronization method for OFDM-based wireless communication system Sep. 16, 2008
7426178 Vertical roaming in wireless networks through improved wireless network cell boundary detection Sep. 16, 2008
7423961 Radio apparatus and adaptive array processing method Sep. 9, 2008
7420916 Fourier-transform based linear equalization for MIMO CDMA downlink Sep. 2, 2008
7417964 Transmission apparatus and method for use in mobile communication system based on orthogonal frequency division multiplexing scheme Aug. 26, 2008
7414958 Efficient tone ordering for multitone transmission Aug. 19, 2008
7411897 Method and apparatus for generating an edge sidelobe canceling signal and uplink communication method and apparatus using the same in an OFDMA system Aug. 12, 2008
7409013 Super-orthogonal space-time trellis codes, and applications thereof Aug. 5, 2008
7403881 FFT/IFFT processing system employing a real-complex mapping architecture Jul. 22, 2008
7403472 OFDM receiving device and OFDM receiving method Jul. 22, 2008
7394755 Semi-fixed circuit Jul. 1, 2008
7394754 System and method for transmitting data in a multiple-branch transmitter-diversity orthogonal frequency-division multiplexing (OFDM) system Jul. 1, 2008
7391805 Method and apparatus for transferring signals in a wireless communication system Jun. 24, 2008
7391712 Method and system for forward-looking tone allocation Jun. 24, 2008
7391711 Method and system for adaptive modulation Jun. 24, 2008
7386033 Communication system with receivers employing generalized two-stage data estimation Jun. 10, 2008
7382718 Transmitting and receiving method for reducing distortion caused by a time-varying channel in an orthogonal frequency division multiplex system Jun. 3, 2008
7379417 Orthogonal frequency division multiplexing transmitter system and VLSI implementation thereof May. 27, 2008
7376074 Apparatus and method for transmitting and receiving side information of a partial transmit sequence in an OFDM communication system May. 20, 2008
7373282 Fault severity check and source identification May. 13, 2008
7372907 Efficient and flexible oversampled filterbank with near perfect reconstruction constraint May. 13, 2008
7372899 Reduced symbol rate handshake signaling in ADSL systems May. 13, 2008
7369487 Clustered OFDM with channel estimation May. 6, 2008
7366090 Apparatus and method for generating a preamble sequence in an OFDM communication system Apr. 29, 2008
7366089 Apparatus and method of multiple antenna receiver combining of high data rate wideband packetized wireless communication signals Apr. 29, 2008
7362791 Method and apparatus for domain transformation multiple signal processing Apr. 22, 2008
7359314 Signal transmission system for transmitting a signal with a guard interval and a demodulation method thereof Apr. 15, 2008
7359313 Space-time bit-interleaved coded modulation for wideband transmission Apr. 15, 2008
7355958 Blind OFDM channel estimation and identification using receiver diversity Apr. 8, 2008
7352718 Spatial division multiple access for wireless networks Apr. 1, 2008
7352691 Double difference phase detection Apr. 1, 2008
7349817 Apparatus and method for reducing peak-to-average power ratio in a broadband wireless communication system Mar. 25, 2008
7345990 Method and apparatus for performing digital communications Mar. 18, 2008
7342978 Method and apparatus for PAPR reduction of an OFDM signal Mar. 11, 2008
7336647 System and method for ranging Feb. 26, 2008
7336637 CDMA communication device for improving the usability of frequencies and suppressing the occurrence of call loss Feb. 26, 2008
7336601 Adaptive time diversity and spatial diversity for OFDM Feb. 26, 2008
7336598 Guard interval length control method in OFDM system and OFDM transmitting and receiving apparatuses Feb. 26, 2008
7333423 Transceiver with calibrated I and Q paths and methods for deconvolved calibration Feb. 19, 2008
7333422 Optimized FFT/IFFT module Feb. 19, 2008

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