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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:

Patent Number Title Of Patent Date Issued
8264946 Methods and systems for PAPR reduction in SC-FDMA systems Sep. 11, 2012
8254509 Receiver Aug. 28, 2012
8254498 Random orthogonal frequency division multiplexing Aug. 28, 2012
8249186 Method and apparatus for singular value decomposition of a channel matrix Aug. 21, 2012
8243583 OFDM/DMT/digital communications system including partial sequence symbol processing Aug. 14, 2012
8238458 IQ impairment estimation in an OFDM signal Aug. 7, 2012
8238450 Dynamic transmitter noise level adjustment for digital subscriber line systems Aug. 7, 2012
8238227 Systems and methods for providing a MoCA improved performance for short burst packets Aug. 7, 2012
8233412 Multi-signal, software-defined and staring cognitive communications system Jul. 31, 2012
8229052 Apparatus and method for transmitting/receiving secondary synchronization channel in a broadband wireless communication system Jul. 24, 2012
8218694 Method for transmitting a digital signal, method for receiving a digital signal, transmitter and receiver Jul. 10, 2012
8218659 OFDM demodulation device Jul. 10, 2012
8218521 Signal generation device and signal generation method and program thereof in wireless transmission system Jul. 10, 2012
8218426 Multiple stage fourier transform apparatus, processes, and articles of manufacture Jul. 10, 2012
8213549 Apparatus, computer program and method for determining a symbol estimate Jul. 3, 2012
8213368 Adaptive compression of channel feedback based on second order channel statistics Jul. 3, 2012
8208366 Method of resolving overlaps in data transmission and user equipment therefor Jun. 26, 2012
8208365 DRM receiver with analog and digital separation filter and demodulation method Jun. 26, 2012
8204381 Broadband radio transceiver with optical transform Jun. 19, 2012
8199838 Transmission apparatus and a reception apparatus in a multicarrier transmission system and a transmission method and a reception method using the multicarrier transmission system Jun. 12, 2012
8199738 Apparatus and method for processing ranging channel of communication system Jun. 12, 2012
8199708 Allocation of uplink reference signals in a mobile communication system Jun. 12, 2012
8194806 Demodulation device, demodulation device control method, demodulation device control program, and recording medium with recorded demodulation device control program Jun. 5, 2012
8194802 Apparatus and method for detecting cyclic prefix length in mobile communication system Jun. 5, 2012
8194772 Constellation rotation relay system and constellation rotation relay method Jun. 5, 2012
8194532 Mixed radix discrete fourier transform Jun. 5, 2012
8194531 Methods for transmitting and receiving a multicarrier signal, carrying out a channel estimation, and corresponding devices and computer program products Jun. 5, 2012
8194529 Frame and data pattern structure for multi-carrier systems Jun. 5, 2012
8189700 Signal generation device and signal generation method May. 29, 2012
8189697 Orthogonal frequency division multiplexing (OFDM) communications device and method that incorporates low PAPR preamble and receiver channel estimate circuit May. 29, 2012
8189622 Method for transmitting pilot allocation information to user equipment in a multi-user multiple input multiple output system May. 29, 2012
8189457 Method and apparatus for data transmission in home networks May. 29, 2012
8189456 Apparatus for and method of minimizing backoff for orthogonal frequency division multiplexing transmission May. 29, 2012
8184586 Radio base station and radio resource allocation method and radio communication system May. 22, 2012
8179810 Low-complexity primary synchronization sequences May. 15, 2012
8175190 Managing spectra of modulated signals in a communication network May. 8, 2012
8175176 FFT window spread generating method May. 8, 2012
8174958 Method and system for a reference signal (RS) timing loop for OFDM symbol synchronization and tracking May. 8, 2012
8170152 Method and apparatus for multiple signal identification and finding the basis functions of the received signal May. 1, 2012
8170127 Receiver and method of receiving May. 1, 2012
8169887 Apparatuses and methods for wireless communications using a permutation sequence May. 1, 2012
8165106 Apparatus and method for detecting a ranging signal in a wireless communication system Apr. 24, 2012
8165094 Soft handoff in OFDMA system Apr. 24, 2012
8165010 OFDMA preambles system and method Apr. 24, 2012
8159969 Systems and methods for high rate OFDM communications using first and second cyclic prefix lengths Apr. 17, 2012
8155230 Method for the flexible demodulation of estimated complex symbols Apr. 10, 2012
8155229 Apparatus and method for transmitting/receiving a signal in a communication system Apr. 10, 2012
8155173 Mobile communication system, transmitting equipment and transmission signal generation method Apr. 10, 2012
8155073 Orthogonal frequency division multiplexing wireless communication operable on frequency selective channel, and channel compensation method Apr. 10, 2012
8154985 Domain transform compaction and recovery Apr. 10, 2012

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