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Browse by Category: Main > Communications
Class Information
Number: 375/323
Name: Pulse or digital communications > Receivers > Angle modulation > Combined phase shift keyed and frequency shift keyed
Description: Subject matter in which the received carrier has been modulated both as to its phase and frequency.


Patents under this class:
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Patent Number Title Of Patent Date Issued
7623594 Satellite receiver system Nov. 24, 2009
7567626 Radio receiver for the reception of data bursts which are modulated with two modulation types Jul. 28, 2009
7492836 Wireless data communication demodulation device and demodulation method Feb. 17, 2009
7486751 Joint time/frequency domain maximum ratio combining architectures for multi input multi output wireless receivers Feb. 3, 2009
7443928 Signal detection using sphere decoding technique Oct. 28, 2008
7424662 Method and system for providing low density parity check (LDPC) encoding Sep. 9, 2008
7424068 Method and system for coding/decoding signals and computer program product therefor Sep. 9, 2008
RE40254 Method and system for realising a fast control channel in a cellular radio network Apr. 22, 2008
7289577 Modulation method and radio communication system Oct. 30, 2007
7280619 Method and apparatus for compensating I/Q imbalance in receivers Oct. 9, 2007
7254187 Narrow band chaotic bi-phase shift keying Aug. 7, 2007
7177364 System, decoder and method for transmitting, receiving and decoding high-speed digital data signals with reduced electromagnetic emissions Feb. 13, 2007
7142617 Narrow band chaotic frequency shift keying Nov. 28, 2006
7139334 Cooperative code-enhanced multi-user communications system Nov. 21, 2006
7039123 Signal demodulation method and apparatus for reproducing data from received signal May. 2, 2006
7035029 Method of and apparatus for recording/reading information, circuit for recording/reading signal Apr. 25, 2006
7035354 CDMA multi-user detection with a real symbol constellation Apr. 25, 2006
7031334 Method and system for realising a fast control channel in a cellular radio network Apr. 18, 2006
6947508 Method and apparatus for estimating the frequency and/or phase of a digital signal Sep. 20, 2005
6937871 Anti-demodulator circuit, filtering device and demodulator circuit Aug. 30, 2005
6928110 Adaptive equalizer training circuit, modem apparatus and communication apparatus Aug. 9, 2005
6611198 Electronic reader for reading a special characteristic of an object Aug. 26, 2003
6522637 System and method for allocating a carrier wave frequency of one channel between two carrier wave frequencies of another channel Feb. 18, 2003
6470056 Offset QPSK modulation analytic system Oct. 22, 2002
6456671 Decision feedback phase tracking demodulation Sep. 24, 2002
6449319 Receiver with a clock signal generator Sep. 10, 2002
6445751 Estimation of frequency offset in a communication system Sep. 3, 2002
6445745 Phase encoding methods for handling multiple phase modulated signals on a single channel Sep. 3, 2002
6411199 Radio frequency identification system Jun. 25, 2002
6125148 Method for demodulating information in a communication system that supports multiple modulation schemes Sep. 26, 2000
5809084 Data receiving in a digital mobile communication Sep. 15, 1998
5673293 Method and apparatus for demodulating QAM and VSB signals Sep. 30, 1997
5648985 Universal radio architecture for low-tier personal communication system Jul. 15, 1997
5602868 Multiple-modulation communication system Feb. 11, 1997
5504784 Viterbi algorithm decoding method and apparatus Apr. 2, 1996
5321726 Calibration of vector demodulator using statistical analysis Jun. 14, 1994
5197085 Radio receiver Mar. 23, 1993
5126998 Method and apparatus for transmitting and receiving a carrier signal which is simultaneously frequency and phase modulated Jun. 30, 1992
4853944 Digital AM/FM/.phi.M demodulator Aug. 1, 1989
4843615 CPFSK communication system employing nyquist-filtered modulator/demodulator Jun. 27, 1989
4575858 PSK modulation by temporarily increasing frequency to achieve phase change Mar. 11, 1986
4498050 Demodulation device for composite PSK-PSK modulated waves Feb. 5, 1985
4290140 Combined coherent frequency and phase shift keying modulation system Sep. 15, 1981
4247943 Piecewise coherent, combined frequency and phase-shift-keyed signal demodulator Jan. 27, 1981
4236249 Circuit arrangement for correcting frequency errors during a transmission of data Nov. 25, 1980
4215427 Carrier tracking apparatus and method for a logging-while-drilling system Jul. 29, 1980
4215425 Apparatus and method for filtering signals in a logging-while-drilling system Jul. 29, 1980
4128828 Differential detection systems with non-redundant error correction Dec. 5, 1978
4121159 Method for the synchronization of a transmission path Oct. 17, 1978
4096442 Crosstalk corrector and decision device for FSK Jun. 20, 1978

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