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Class Information
Number: 375/271
Name: Pulse or digital communications > Systems using alternating or pulsating current > Angle modulation
Description: Subject matter where the digital information or pulses to be transmitted vary the phase angle or frequency of a carrier wave.

Sub-classes under this class:

Class Number Class Name Patents
375/272 Frequency shift keying 244
375/279 Phase shift keying 339

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8705644 Method for generating and transmitting a reference signal for uplink demodulation in a clustered DFT-spread OFDM transmission scheme Apr. 22, 2014
8693564 Low overhead feedback scheme for codebook based closed-loop MIMO Apr. 8, 2014
8675751 Meta-carrier embedding technique with improved performance for BPSK, MSK, and O-QPSK modulation Mar. 18, 2014
8675769 Constellation map optimization for highly spectrally efficient communications Mar. 18, 2014
8665995 Dual channel transmission Mar. 4, 2014
8665972 Method and apparatus for transmitting CSI-RS and data using partial muting of CSI-RS Mar. 4, 2014
8638894 Data communication apparatus, data communication system, and data communication method Jan. 28, 2014
8625697 OFDM beamformer, and a signal receiving system incorporating the same Jan. 7, 2014
8619905 Predistorter and distortion compensation method Dec. 31, 2013
8605822 Apparatus and method for transmitting and receiving data Dec. 10, 2013
8605830 Blind carrier/timing recovery and detection of modulation scheme Dec. 10, 2013
8600290 Hybrid band directed energy target disruption Dec. 3, 2013
8565352 Digital IQ imbalance compensation for dual-carrier double conversion receiver Oct. 22, 2013
8565348 Radio transmitting apparatus Oct. 22, 2013
8565290 Method and apparatus for latency-aware scheduling using interference cancellation Oct. 22, 2013
8526525 Interference avoiding MIMO Sep. 3, 2013
8514965 Wireless communication system with a modulation bandwidth comparable to or exceeding the bandwidth of the transmitter and/or receiver antennas Aug. 20, 2013
8509351 Multi-mode radio frequency modulation circuitry Aug. 13, 2013
8503573 Bits-to-symbol mapping method for 4+12+16 APSK modulation Aug. 6, 2013
8488539 Method of generating preamble sequence Jul. 16, 2013
8482391 Wall control interface with phase modulation and detection for power management Jul. 9, 2013
8483297 Multifunctional signal transform engine Jul. 9, 2013
8483308 Satellite communication system utilizing low density parity check codes Jul. 9, 2013
8477870 Transmitter including polar modulation circuit Jul. 2, 2013
8457247 In-band generation of low-frequency periodic signaling Jun. 4, 2013
8451720 Wireless transmission system, wireless communication device and wireless transmission method May. 28, 2013
8446969 Multi-carrier transmission apparatus and peak suppression method May. 21, 2013
8446976 Signal generator with adjustable phase May. 21, 2013
8442130 Communication apparatus, communication method and integrated circuit May. 14, 2013
8442144 Closed loop feedback system for improved down link performance May. 14, 2013
8432990 System and method for employing a six-bit rank 1 codebook for four transmit antennas Apr. 30, 2013
8422574 Base station apparatus, user equipment, and communication control method in mobile communication system Apr. 16, 2013
8411766 System and method for utilizing spectral resources in wireless communications Apr. 2, 2013
8374271 Method and system for resizing a MIMO channel Feb. 12, 2013
8320493 Wireless communication system Nov. 27, 2012
8295386 Nonlinear filter and transmission circuit Oct. 23, 2012
8295372 DRM receiver and demodulation method Oct. 23, 2012
8280337 System and method for zero intermediate frequency filtering of information communicated in wireless networks Oct. 2, 2012
8270503 Digital radio mondiale receiver integer carrier frequency offset estimation Sep. 18, 2012
8258887 Delay-coupled LCVCO Sep. 4, 2012
8243834 Wireless communication device Aug. 14, 2012
8222966 System, method and apparatus for an open loop calibrated phase wrapping phase modulator for wideband RF outphasing/polar transmitters Jul. 17, 2012
8213526 MIMO/transmit diversity channel estimation Jul. 3, 2012
8204158 Method and apparatus to reduce undesired amplitude modulation Jun. 19, 2012
8184730 Method and system for frequency band allocation based on frequency band usage measurements May. 22, 2012
8179986 Multicarrier modulation scheme as well as transmission apparatus and reception apparatus using the scheme May. 15, 2012
8170153 Method for deciding position of mapping symbols, and device and method for modulating binary signal May. 1, 2012
8170138 Signal generator and method May. 1, 2012
8165232 Low peak-to-average power ratio (PAPR) preamble for orthogonal frequency division multiplexing (OFDM) communications Apr. 24, 2012
8160165 Orthogonal frequency division multiplexing (OFDM) communications device and method that incorporates low PAPR preamble and frequency hopping Apr. 17, 2012

1 2 3 4

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