ClassID:

226087

H04L27/389 - CPC Classification

Classification description:

Modulated-carrier systems; Carrier systems characterised by combinations of two or more of the types covered by groups , , or; Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems; Demodulator circuits; Receiver circuits with separate demodulation for the phase and amplitude components

Recent Application in this class:
#1
20250247121
2025-07-31

RECEIVER IMAGE CALIBRATION WITH NOISE FROM A POWER AMPLIFIER

#2
20240235920
2024-07-11

Device and method for phase adjustment of receiver for PAM signaling

#3
20230318902
2023-10-05

Technologies for generating and processing signals

#4
20220368585
2022-11-17

Transmitter, receiver, transmission method, and reception method

#5
20220255662
2022-08-11

Reception device and reception method

#6
20220173948
2022-06-02

Communication system using shape-shifted sinusoidal waveforms

#7
20220141078
2022-05-05

Transmission method, transmission device, reception method, and reception device

#8
20210344548
2021-11-04

Contention-based payload transmissions using differential coding

#9
20210203540
2021-07-01

Transmission method, transmission device, reception method, and reception device

#10
20210099333
2021-04-01

Transmitter, receiver, transmission method, and reception method

#11
20200382355
2020-12-03

High spectral efficiency data communications system

#12
20200336343
2020-10-22

Generating metrics from samples of a received signal in a communications receiver supporting multiple operating modes

#13
20200295770
2020-09-17

Frequency-converted self-injection-locked radar

#14
20200244508
2020-07-30

Transmission method, transmission device, reception method, and reception device

#15
20200186282
2020-06-11

Reception device and reception method

#16
20200162122
2020-05-21

Coded antenna array

#17
20200092147
2020-03-19

Generating metrics from samples of a received signal in a communications receiver supporting multiple operating modes

#18
20200077381
2020-03-05

Indication of modulation and coding scheme for wireless device in coverage enhanced mode

#19
20190312769
2019-10-10

Transmission method, transmission device, reception method, and reception device

#20
20190305883
2019-10-03

Reception device and reception method

#21
20190238146
2019-08-01

Wideband polar receiver architecture and signal processing methods

#22
20190190767
2019-06-20

Method and apparatus for measuring displacement of object using multiple frequency signal

#23
20190182097
2019-06-13

Transmitter, receiver, transmission method, and reception method

#24
20190182096
2019-06-13

Control data transmission scheme

#25
20190173705
2019-06-06

High spectral efficiency data communications system using encoded sinusoidal waveforms

#26
20190158342
2019-05-23

Method for transmitting and receiving reference signal in wireless communication system and device therefor

#27
20190140882
2019-05-09

Narrowband sinewave modulation system

#28
20190140873
2019-05-09

Receiver for high spectral efficiency data communications system using encoded sinusoidal waveforms

#29
20190132175
2019-05-02

Multi-carrier data communications system having high spectral efficiency

#30
20190132174
2019-05-02

High spectral efficiency data communications system using encoded sinusoidal waveforms

#31
20190132167
2019-05-02

System for encoding multi-bit features into sinusoidal waveforms at selected phase angles

#32
20190132166
2019-05-02

High spectral efficiency data communications system using energy-balanced modulation

#33
20190052510
2019-02-14

Transmission method, transmission device, reception method, and reception device

#34
20190028238
2019-01-24

Reception device and reception method

#35
20180337815
2018-11-22

Transmitter, receiver, and signal processing method

#36
20180287847
2018-10-04

Method and apparatus for the extrication of quadrature pairs of amplitude modulated signals from intermingled extraneous signals

#37
20180123857
2018-05-03

Communication systems using independent-sideband COFDM

#38
20180091353
2018-03-29

Multipoint transmission and reception in a radio communication network

#39
20180034680
2018-02-01

Demodulation of nonuniform QAM signals

#40
20170324541
2017-11-09

Method for acquiring synchronization, and PHY transmitter and PHY receiver for cable network

#41
20170324420
2017-11-09

Wideband polar receiver architecture and signal processing methods

#42
20170302498
2017-10-19

Phase modulation device and laser microscope

#43
20170288473
2017-10-05

Receiver for simultaneously transferring energy and data and signal processing method thereof

#44
20170070997
2017-03-09

System and method for enhancing channel estimation at a receiver

#45
20160127161
2016-05-05

Weather band receiver

#46
20150350002
2015-12-03

Handling signals

#47
20150333838
2015-11-19

Optical receiving device and phase cycle reduction method

#48
20150222309
2015-08-06

Compensation apparatus and wireless communication equipment

#49
20150207659
2015-07-23

Correction of imbalances in a complex intermediate frequency mixer

#50
20150117866
2015-04-30

QUADRATURE AMPLITUDE MODULATION SYMBOL MAPPING

#51
20140269999
2014-09-18

Polar receiver signal processing apparatus and methods

#52
20130156083
2013-06-20

Adaptive compensation of nonlinear frequency distortion in polar transmitters based on a least squares estimation

#53
20100135368
2010-06-03

UPSAMPLING/INTERPOLATION AND TIME ALIGNMENT MECHANISM UTILIZING INJECTION OF HIGH FREQUENCY NOISE

#54
20090304113
2009-12-10

Optimal blind channel estimation for DQPSK demodulation

#55
20090190692
2009-07-30

Linear and polar dual mode transmitter circuit

#56
20090129788
2009-05-21

Optical Receiver For Receiving A Signal With M-Valued Quadrature Amplitude Modulation With Differential Phase Coding And Application Of Same

#57
20080298453
2008-12-04

Nonlinear adaptive phase domain equalization for multilevel phase coded demodulators

#58
20080225984
2008-09-18

Digital polar transmitter

#59
20080165900
2008-07-10

Demodulating a signal encoded according to ASK modulation and PSK modulation

#60
20080075192
2008-03-27

Multilevel QAM symbol timing detector and multilevel QAM communication signal receiver

#61
20070037535
2007-02-15

Synchronization method and apparatus for polar modulation signals

#62
20060062330
2006-03-23

Modulation method using hard decision for quadrature amplitude modualtion and an apparatus thereof

#63
20050092847
2005-05-05

IC card, IC card processor and IC card system to improve data transmission speed

#64
20050073944
2005-04-07

Demodulation with separate branches for phase and amplitude

#65
19222358
2025-11-18

Ad hoc RF network structures and methods

#66
18990822
2025-07-15

Ad hoc RF network structures and methods

#67
18231458
2025-02-18

System and method for using FPGA look-up table as quadrature digital correlator