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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
7929409 Orthogonal frequency division multiplexing (OFDM) method and apparatus for protecting and authenticating wirelessly transmitted digital information Apr. 19, 2011
7924948 Pre-scaling of initial channel estimates in joint detection Apr. 12, 2011
7924779 Apparatus and method for allocating frequency resources in mobile communication system Apr. 12, 2011
7920462 Amplitude attenuation estimation and recovery systems for OFDM signal used in communication systems Apr. 5, 2011
7916625 Method for variable cyclic length in OFDM communications Mar. 29, 2011
7916623 Method of allocating wireless resources in a multi-carrier system Mar. 29, 2011
7916622 Apparatus and method for allocating resources in mobile communication system Mar. 29, 2011
7907513 Superimposed composite channel filter Mar. 15, 2011
7907512 OFDM and SC-OFDM QLM Mar. 15, 2011
7907511 Apparatus and method of reconstructing amplitude-clipped signal Mar. 15, 2011
7899132 Data transmitting and receiving method using phase shift based precoding and transceiver supporting the same Mar. 1, 2011
7898936 Combined OFDM and wavelet multi-carrier transceiver Mar. 1, 2011
7898935 OFDM/DMT/digital communications system including partial sequence symbol processing Mar. 1, 2011
7894820 Channel feedback using channel state predictions based also on delays Feb. 22, 2011
7894543 Apparatus and method for canceling interference in broadband wireless access system Feb. 22, 2011
7894331 Adaptive time-domain interpolation for OFDM scattered pilot symbols Feb. 22, 2011
7894328 Method, apparatus and system for detecting mode and guard interval Feb. 22, 2011
7894326 System and method for communicating information using time-and-frequency-bounded base functions Feb. 22, 2011
7889801 Multi transmit antenna synchronization channel transmission cell ID detection Feb. 15, 2011
7889635 Versatile system for dual carrier transformation in orthogonal frequency division multiplexing Feb. 15, 2011
7885360 Wireless communication apparatus and receiving method Feb. 8, 2011
7885349 Data transmitting and receiving method using phase shift based precoding and transceiver supporting the same Feb. 8, 2011
7885295 Communication resource management Feb. 8, 2011
7881260 Method and apparatus in a cellular telecommunications system Feb. 1, 2011
7881237 Compensation for residual frequency offset, phase noise and I/Q imbalance in OFDM modulated communications Feb. 1, 2011
7872961 Orthogonal frequency division multiple access message processing method and apparatus Jan. 18, 2011
7869533 Communication system and method for receiving high priority and low priority signals Jan. 11, 2011
7864664 Delay profile generator Jan. 4, 2011
7864663 Orthogonal spread-spectrum waveform generation with non-contiguous spectral occupancy for use in CDMA communications Jan. 4, 2011
7864662 Telecommunication system and method Jan. 4, 2011
7864661 Time-switched preamble generator, method of generating and multiple-input, multiple-output communication system employing the generator and method Jan. 4, 2011
7860177 Receiver detecting signals based on spectrum characteristic and detecting method thereof Dec. 28, 2010
7859990 Methods and systems for performing channels estimation in a wireless communication system Dec. 28, 2010
7856066 OFDM receiver and doppler frequency estimating circuit Dec. 21, 2010
7855948 Interference mitigation in a wireless communication system Dec. 21, 2010
7852958 Receiving apparatus, integrated circuit and receiving method Dec. 14, 2010
7852955 Orthogonal frequency division multiplexing transmitting and receiving method and device thereof Dec. 14, 2010
7852906 Wireless communication device and channel estimation and separation method in multi input system Dec. 14, 2010
7848434 Channel estimator and related method for smoothing channel responses of a multi-carrier system Dec. 7, 2010
7848221 Method and system for detecting adjacent channel interference from OFDM/OFDMA based broadband wireless access Dec. 7, 2010
7848220 System for modeling digital pulses having specific FMOP properties Dec. 7, 2010
7848219 Radar detection for wireless communication devices Dec. 7, 2010
7844006 Method of non-uniform doppler compensation for wideband orthogonal frequency division multiplexed signals Nov. 30, 2010
7843970 Techniques for generating and detecting a physical random access channel signal in a wireless communication system Nov. 30, 2010
7843872 Methods and arrangements to determine a reception of a signal Nov. 30, 2010
7843806 Apparatus and methods for estimating and compensating sampling clock offset Nov. 30, 2010
7843803 Orthogonal frequency division multiplex modem circuit Nov. 30, 2010
7839947 Circuit and method for reducing the crest factor Nov. 23, 2010
7839763 Radio transmission device, radio reception device, radio transmission method, and radio reception method Nov. 23, 2010
7839760 Transmitting and receiving systems for increasing service coverage in orthogonal frequency division multiplexing wireless local area network, and method thereof Nov. 23, 2010

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