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Class Information
Number: 375/308
Name: Pulse or digital communications > Transmitters > Angle modulation > Phase shift keying
Description: Subject matter where the carrier wave is modulated by varying its phase in accordance with the pulses to be transmitted.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Patent Number Title Of Patent Date Issued
8705656 Transmission and reception apparatus and method Apr. 22, 2014
8705658 Method and apparatus of modulating signal in broadcasting and communication system Apr. 22, 2014
8687968 Vector sum phase shifter, optical transceiver, and control circuit Apr. 1, 2014
8687973 Voltage generator, control circuit, vector sum phase shifter, and optical transceiver Apr. 1, 2014
8681894 Digital affine transformation modulated power amplifier for wireless communications Mar. 25, 2014
8675754 Hybrid modulation schemes used in data communication Mar. 18, 2014
8670505 Early detection of segment type using BPSK and DBPSK modulated carriers in ISDB-T receivers Mar. 11, 2014
8666335 Wireless device with N-phase transmitter Mar. 4, 2014
8660205 Energy efficient constellation method and system Feb. 25, 2014
8654888 Precoder circuit Feb. 18, 2014
8644420 Alignment of in-phase and quadrature data in quadrature phase shift keying optical transmitters Feb. 4, 2014
8638880 Radio base station and user equipment and methods therein Jan. 28, 2014
8634450 Adaptive error correcting code for data communications over a plastic optical fibre Jan. 21, 2014
8630748 Method and apparatus for access and/or starting verification Jan. 14, 2014
8619895 Apparatus and method for transmitting/receiving broadcast data in digital broadcasting system Dec. 31, 2013
8605824 Radio communication apparatus and radio communication method Dec. 10, 2013
8605823 Communication using continuous-phase modulated signals Dec. 10, 2013
8605821 Apparatus and method for scrambling in a wireless communication system Dec. 10, 2013
8605774 Amplitude/phase delay calibration for envelope-tracking amplifier Dec. 10, 2013
8599939 Data transmission method Dec. 3, 2013
8600442 Power recovery circuit based on partial standing waves Dec. 3, 2013
8594575 Shifted channel characteristics for mitigating co-channel interference Nov. 26, 2013
8588337 Vector modulator Nov. 19, 2013
8588326 System and method for mapping symbols for MIMO transmission Nov. 19, 2013
8588338 Driver circuit for driving a power amplifier Nov. 19, 2013
8582641 Satellite distribution apparatus, control means for use in satellite distribution apparatus and method of use thereof Nov. 12, 2013
8576893 Systems and methods for high data rate ultra wideband communication Nov. 5, 2013
8565348 Radio transmitting apparatus Oct. 22, 2013
8553627 Transmission diversity scheme on physical uplink control channel (PUCCH) with ACK/NACK differentiation Oct. 8, 2013
8548073 Method, apparatus and system for using guard tones in OFDM systems for increasing data rates and improving robustness Oct. 1, 2013
8548400 System and method for polar modulation using power amplifier bias control Oct. 1, 2013
8514977 Transmission apparatus, reception apparatus, transmission method, and reception method of wireless communication system Aug. 20, 2013
8509358 Viterbi equalization with detection of the nearest constellation points for stage reduction Aug. 13, 2013
8503573 Bits-to-symbol mapping method for 4+12+16 APSK modulation Aug. 6, 2013
8488718 Correction of distortions in an emission chain Jul. 16, 2013
8483316 Modulation apparatus, modulation method, demodulation apparatus, and demodulation method Jul. 9, 2013
8478344 Power recovery circuit based on partial standing waves Jul. 2, 2013
8457567 Amplitude modulation controller for polar transmitter Jun. 4, 2013
8446306 Method for mixing a complex digital signal with a reference signal, mixer and digital-to-analogue converter using the method May. 21, 2013
8441915 Method and a device for sequencing the ZC sequences of the random access channel May. 14, 2013
8442144 Closed loop feedback system for improved down link performance May. 14, 2013
8433077 Noise removal device and noise removal method Apr. 30, 2013
8428184 Transmitter, receiver, data transmission method and data reception method Apr. 23, 2013
8428183 In-phase and quadrature pattern alignment for quadrature phase shift keying optical transmitters Apr. 23, 2013
8428167 Method of estimating the symbols of a digital signal and receiver for implementing said method Apr. 23, 2013
8422589 Method and apparatus for transmitting data in a digital communication system, and computer-readable storage medium relating thereto Apr. 16, 2013
8411795 High power high linearity digital phase shifter Apr. 2, 2013
8406425 Method and apparatus for minimizing co-channel interference Mar. 26, 2013
8401118 Method and apparatus for constant envelope demodulation Mar. 19, 2013
8391412 PN long code shift for access attempt Mar. 5, 2013

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