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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
7327793 DMT peak reduction without affecting transmission signal Feb. 5, 2008
7324601 Coarse frequency synchronization method and apparatus in OFDM system Jan. 29, 2008
7324437 Method for co-channel interference cancellation in a multicarrier communication system Jan. 29, 2008
7324435 Methods and apparatus for receiving OFDM signals Jan. 29, 2008
7324432 Apparatus of compensating for frequency offset using pilot symbol in an orthogonal frequency division multiplexing system Jan. 29, 2008
7321550 Method of equalization in an OFDM system Jan. 22, 2008
7319690 Communication signal equalization systems and methods Jan. 15, 2008
7319660 Device and method for symbol frame synchronization of OFDM transmitter and receiver Jan. 15, 2008
7317680 Channel mapping for OFDM Jan. 8, 2008
7315580 Method and apparatus for high-order PAPR reduction of an OFDM signal Jan. 1, 2008
7313189 Receiver which demodulates OFDM symbol Dec. 25, 2007
7313086 OFDM receiver, semiconductor integrated circuit and OFDM method for receiving a signal Dec. 25, 2007
7313085 Method for creating symmetric-identical preamble and method for synchronizing symbol and frequency of orthogonal frequency division multiplexed signals by using symmetric-identical preamble Dec. 25, 2007
7304939 Communication using simultaneous orthogonal signals Dec. 4, 2007
7301893 Linear space-time block code with block STTD structure Nov. 27, 2007
7298692 Radio base station apparatus and communication terminal Nov. 20, 2007
7295595 Device for synchronizing a receiver and a transmitter in a communication system Nov. 13, 2007
7292833 Reception system for multisensor antenna Nov. 6, 2007
7292640 System and method for an adaptive receiver for the reception of signals subject to multipath interference Nov. 6, 2007
7289459 Radio communication system with adaptive interleaver Oct. 30, 2007
7289425 Parallel orthogonal frequency division multiplexed communication system Oct. 30, 2007
7286600 Data transmission method and data transmission device Oct. 23, 2007
7286514 Method for phase noise suppression for OFDM based WLANs Oct. 23, 2007
7286466 Multicarrier systems Oct. 23, 2007
7283598 OFDM receiver apparatus Oct. 16, 2007
7283583 Adaptive rate transmission with dual noise margins Oct. 16, 2007
7283498 Method and apparatus for allocating a pilot carrier adaptively in an orthogonal frequency division multiple access system Oct. 16, 2007
7283461 Detection of denial-of-service attacks using frequency domain analysis Oct. 16, 2007
7280469 Efficient implementation of large size FFT Oct. 9, 2007
7277512 Systems and methods for accounting for intercarrier interference in transmission systems Oct. 2, 2007
7269127 Preamble structures for single-input, single-output (SISO) and multi-input, multi-output (MIMO) communication systems Sep. 11, 2007
7260361 Locating interfering devices in wireless networks using channel adaptation metrics Aug. 21, 2007
7260056 Channel estimation in a wireless communication system Aug. 21, 2007
7260055 Method for reducing channel estimation error in an OFDM system Aug. 21, 2007
7257165 Method and apparatus for preamble detection and time synchronization estimation in OFDM communication systems Aug. 14, 2007
7236747 Increasing OFDM transmit power via reduction in pilot tone Jun. 26, 2007
7236452 Multi-carrier CDMA transmission system, transmitting apparatus and receiving apparatus used in this system, and multi-carrier CDMA transmission method Jun. 26, 2007
7233566 Five-by-three wavelet transform apparatus Jun. 19, 2007
7230909 Efficient activity resumption in point to multipoint service flow Jun. 12, 2007
7227902 Method and apparatus for digital channelisation and de-channelisation Jun. 5, 2007
7227885 Correlation method in a communication system and apparatus Jun. 5, 2007
7227835 Method and apparatus for adjacent channel interference reduction in an orthogonal frequency division multiplexing (OFDM) receiver Jun. 5, 2007
7224754 Frequency offset compensation estimation system and method for a wireless local area network May. 29, 2007
7224666 Estimating frequency offsets using pilot tones in an OFDM system May. 29, 2007
7215927 Radio communication apparatus and radio transmission method May. 8, 2007
7206350 OFDM multiple sub-channel communication system Apr. 17, 2007
7206278 Method and system for increasing the total amount of useful information (throughput) transmitted in a radiocommunication system Apr. 17, 2007
7190735 Generating two signals having a mutual phase difference of 90.degree. Mar. 13, 2007
7187935 Method and software for low bandwidth presence via aggregation and profiling Mar. 6, 2007
7187646 Link quality determination of a transmission link in an OFDM transmission system Mar. 6, 2007

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