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Class Information
Number: 375/279
Name: Pulse or digital communications > Systems using alternating or pulsating current > Angle modulation > Phase shift keying
Description: Subject matter wherein the instantaneous phase of the carrier wave departs from a reference phase in accordance with the transmission of pulses.

Sub-classes under this class:

Class Number Class Name Patents
375/284 Antinoise or distortion 222
375/282 Biphase (manchester codes) 131
375/283 Differential phase shift keying (diphase) 162
375/280 More than two phases 155

Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8705658 Method and apparatus of modulating signal in broadcasting and communication system Apr. 22, 2014
8660210 Method of packet format dependent selection of MIMO-OFDM demodulator Feb. 25, 2014
8654822 Link adaptation system using doppler frequency and method using the same Feb. 18, 2014
8634450 Adaptive error correcting code for data communications over a plastic optical fibre Jan. 21, 2014
8619895 Apparatus and method for transmitting/receiving broadcast data in digital broadcasting system Dec. 31, 2013
8605826 Multi-gigabit millimeter wave receiver system and demodulator system Dec. 10, 2013
8599939 Data transmission method Dec. 3, 2013
8576897 Receiver Nov. 5, 2013
8576954 Method and apparatus of cross-correlation Nov. 5, 2013
8576953 Identification of target signals in radio frequency pulsed environments Nov. 5, 2013
8576893 Systems and methods for high data rate ultra wideband communication Nov. 5, 2013
8565348 Radio transmitting apparatus Oct. 22, 2013
8553748 ADC clock selection based on determined maximum conversion rate Oct. 8, 2013
8537041 Interpolation-based digital pre-distortion architecture Sep. 17, 2013
8537657 Cross domain modulation scheme for a wireless communication link Sep. 17, 2013
8520766 Transmitter and communication apparatus Aug. 27, 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
8498355 Device and method for correcting a data error in communication path Jul. 30, 2013
8494071 Device and method for correcting a data error in communication path Jul. 23, 2013
8488503 Magnetic field communication method for managing node with low power consumption Jul. 16, 2013
8488692 Radio transmission device and radio transmission method Jul. 16, 2013
8451093 RFID tag, interrogator and system with improved symbol encoding and decoding May. 28, 2013
8442144 Closed loop feedback system for improved down link performance May. 14, 2013
8442156 Adaptive IQ alignment apparatus May. 14, 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
8401118 Method and apparatus for constant envelope demodulation Mar. 19, 2013
8391410 Methods and apparatus for configuring a pilot symbol in a wireless communication system Mar. 5, 2013
8369442 Communicating a signal according to ASK modulation and PSK modulation Feb. 5, 2013
8369451 Method and apparatus for constant envelope modulation Feb. 5, 2013
8363747 Compress-forward coding with N-PSK modulation for the half-duplex gaussian relay channel Jan. 29, 2013
8358717 Device and method for binary phase shift key demodulator using phase shifter Jan. 22, 2013
8340203 Apparatus and method for transmitting data using a plurality of carriers Dec. 25, 2012
8340211 Methods and apparatus to encode bandwidth request message Dec. 25, 2012
8340231 Optimal symbol detection in the presence of non-gaussian interference Dec. 25, 2012
8331479 Method, apparatus, and system for microwave signal correction Dec. 11, 2012
8319569 Quadrature amplitude modulator and quadrature amplitude modulation method Nov. 27, 2012
8306092 Spreading sequences with dual low correlation windows for quasi-synchronous code-division multiple-access communications Nov. 6, 2012
8306135 Communication system, base station, terminal, and communication method Nov. 6, 2012
8301039 Delay processing apparatus, signal amplification apparatus, opto-electric conversion apparatus, analog-digital conversion apparatus, receiving apparatus, and receiving method Oct. 30, 2012
8300730 Multiplier-less data processing techniques and related implementations adapted for use in polar modulator Oct. 30, 2012
8270522 Joint channel estimation and modulation detection Sep. 18, 2012
8270511 Methodology and method and appartus for signaling with capacity optimized constellations Sep. 18, 2012
8259838 Signal transmission system for transmitting transmission signals via a transmission line including transmission conductors Sep. 4, 2012
8259860 Identification of target signals in radio frequency pulsed environments Sep. 4, 2012
8254499 Digital satellite broadcasting receiving tuner and satellite broadcasting receiving device including the same Aug. 28, 2012
8249190 Dual carrier modulation Aug. 21, 2012
8249192 Techniques to transmit data rate control signals for multi-carrier wireless systems Aug. 21, 2012
8243756 Methods, computer program products and apparatus providing improved quantization Aug. 14, 2012

1 2 3 4 5 6 7

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