ClassID:

226085

H04L27/3872 - 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 using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset Compensation for phase rotation in the demodulated signal

Recent Application in this class:
#1
20250125997
2025-04-17

ASYMMETRIC CONSTELLATIONS FOR CHANNEL CHARACTERIZATION

#2
20240348489
2024-10-17

Phase-noise mitigation by embedded phase-tracking signals in 5G/6G

#3
20240275661
2024-08-15

Ultra-Compact Phase-Tracking Demodulation Reference for 5G/6G

#4
20240243961
2024-07-18

INFORMATION TRANSMISSION METHOD AND COMMUNICATION APPARATUS

#5
20240195671
2024-06-13

Techniques for partial transmit sequence transmission using multi-mode index modulation

#6
20240080234
2024-03-07

Scheduling single-branch phase-tracking references in 5G and 6G

#7
20230387952
2023-11-30

Selecting a modulation scheme to mitigate specific fault types in 5G and 6G

#8
20230368808
2023-11-16

RECEIVE PATH IN-PHASE AND QUADRATURE IMBALANCE CORRECTION USING CIRCUIT NOISE

#9
20230336124
2023-10-19

Demodulation device and demodulation method

#10
20230208461
2023-06-29

Phase-tracking demodulation reference and procedure for 5G and 6G

#11
20230164019
2023-05-25

Extremely compact phase-tracking 5G/6G reference signal

#12
20230057684
2023-02-23

Demodulation for phase-noise mitigation in 5G and 6G

#13
20230031261
2023-02-02

Single-branch reference for high-frequency phase tracking in 5G and 6G

#14
20220217020
2022-07-07

Enhancement on sounding reference signal transmission

#15
20220084536
2022-03-17

Receive path in-phase and quadrature imbalance correction using circuit noise

#16
20210250125
2021-08-12

Method and apparatus for transmitting PPDU in broadband having preamble puncturing performed in wireless LAN system

#17
20210105156
2021-04-08

Enhancement on sounding reference signal transmission

#18
20200366544
2020-11-19

Techniques for phase rotation correction

#19
20200244505
2020-07-30

CLOCK SYNCHRONIZATION AND OFDM SYMBOL TIMING SYNCHRONIZATION ALGORITHM AND ARCHITECTURE FOR DATA OVER CABLE SERVICE INTERFACE SPECIFICATION (DOCSIS) FULL DUPLEX (FDX) CABLE MODEM (CM) TO ENABLE FAST RECOVERY OF DOWNSTREAM CHANNELS FOLLOWING AN EXTENDED DOWNSTREAM FREEZE

#20
20200044906
2020-02-06

Digital triggering system as well as method for processing data

#21
20190110295
2019-04-11

Sequence generation and assignment

#22
20190028322
2019-01-24

Joint noncoherent demodulation and carrier frequency offset correction based on non-linear filtering

#23
20180309604
2018-10-25

Apparatus and method for reducing effects of phase noise

#24
20180254938
2018-09-06

OFDM-based data transmission method and apparatus

#25
20180234194
2018-08-16

Homodyne receiver calibration

#26
20180183648
2018-06-28

Transmission device, reception device, and transmission method

#27
20170373911
2017-12-28

Method for generating preamble sequence in wireless LAN system

#28
20170302330
2017-10-19

Multi-channel spread spectrum return channel for ultra small aperture terminals (USATS)

#29
20170214518
2017-07-27

Method and apparatus for estimating and correcting phase error in wireless communication system

#30
20170180182
2017-06-22

JOINT NONCOHERENT DEMODULATION AND CARRIER FREQUENCY OFFSET CORRECTION BASED ON NON-LINEAR FILTERING

#31
20170070997
2017-03-09

System and method for enhancing channel estimation at a receiver

#32
20160330064
2016-11-10

Communication apparatus, demodulation apparatus, carrier reproduction apparatus, phase error compensation apparatus, phase error compensation method, and storage medium on which phase error compensation program has been stored

#33
20160269219
2016-09-15

Method and apparatus for peak to average power ratio reduction

#34
20160269208
2016-09-15

Module for a radio receiver

#35
20160149746
2016-05-26

Phase synchronization of modulation or demodulation for QAM-based multiband TSV-link

#36
20160006590
2016-01-07

Carrier recovery in a QAM receiver

#37
20150215145
2015-07-30

Device for carrier phase recovery

#38
20140254723
2014-09-11

Polar multi-symbol delay detector for carrier phase and frequency recovery for coherent transmission

#39
20140112419
2014-04-24

Circuit, use, and method for controlling a receiver circuit

#40
20130329837
2013-12-12

Adaptive reference symbol method and apparatus for a receiver

#41
20130259173
2013-10-03

Receiver-side estimation of and compensation for signal impairments

#42
20130259153
2013-10-03

Paired OFDM pilot symbols

#43
20130156083
2013-06-20

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

#44
20120288037
2012-11-15

COARSE BIN FREQUENCY SYNCHRONIZATION IN A COMMUNICATION SYSTEM

#45
20120287771
2012-11-15

OFDM generation apparatus in a multi-carrier data transmission system

#46
20120269298
2012-10-25

PHASE ERROR COMPENSATION ARRANGEMENT AND PHASE ERROR COMPENSATION METHOD

#47
20120219080
2012-08-30

Quadrature demodulation with phase shift

#48
20120155580
2012-06-21

Broadband phase synthesis network with self-healing capability

#49
20120142300
2012-06-07

Communication device including multiple LO receivers

#50
20120100809
2012-04-26

Variable time delay control structure for channel matching

#51
20120063549
2012-03-15

Signal receiving apparatus, signal receiving method and signal receiving program

#52
20110182380
2011-07-28

OFDM generation apparatus in a multi-carrier data transmission system

#53
20110143701
2011-06-16

Method to suppress undesired sidebands in a receiver

#54
20110096876
2011-04-28

Method and device for detecting a phase error of a signal

#55
20100316094
2010-12-16

Flexible and in-band signaling for nested preamble

#56
20100278285
2010-11-04

Wireless signal receiving method and receiver for in-phase to quadrature (I/Q) mismatch calibration

#57
20100215131
2010-08-26

Circuit, use, and method for controlling a receiver circuit

#58
20100215125
2010-08-26

Communications device with in-phase/quadrature (I/Q) DC offset, gain and phase imbalance compensation and related method

#59
20100135443
2010-06-03

Variable time delay control structure for channel matching

#60
20100135368
2010-06-03

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

#61
20100034300
2010-02-11

Receiver and method for receiving digital signal

#62
20090221255
2009-09-03

Digital approach for image rejection correction in low intermediate frequency conversion tuner

#63
20090213724
2009-08-27

Method and system for I/Q branch equalization in OFDM systems

#64
20090202022
2009-08-13

Split channel receiver with very low second order intermodulation

#65
20090180565
2009-07-16

System for, and method of, processing quadrature amplitude modulated signals

#66
20090154590
2009-06-18

Multilevel QAM demodulator, multilevel QAM demodulation method, and wireless communication system

#67
20090147839
2009-06-11

QAM phase error detector

#68
20090135967
2009-05-28

Method and circuit system for deciding a symbol upon reception of received symbols coupled with a quadrature signal pair

#69
20090119043
2009-05-07

Phase imbalance monitoring apparatus, amplitude imbalance monitoring apparatus, and apparatus using the same

#70
20090074111
2009-03-19

Wireless communication method and apparatus for performing post-detection constellation correction

#71
20080253473
2008-10-16

Calibration in a radio frequency transmission module

#72
20080225973
2008-09-18

Device and method for determining a constellation of a quadrature amplitude modulated signal

#73
20080137570
2008-06-12

DUAL MODE WPAN TRANSCEIVER

#74
20080123787
2008-05-29

METHOD AND APPARATUS FOR DETECTING AND CORRECTING MODULATED SIGNAL IMPAIRMENTS

#75
20080123786
2008-05-29

METHOD AND APPARATUS FOR DETECTING AND CORRECTING MODULATED SIGNAL IMPAIRMENTS

#76
20080049823
2008-02-28

Methods and apparatuses for processing complex signals

#77
20080013654
2008-01-17

Multi-carrier receiver for wireless communication

#78
20070172001
2007-07-26

DEMODULATION CIRCUIT AND DEMODULATION METHOD

#79
20070140323
2007-06-21

Coarse bin frequency synchronization in a communication system

#80
20070058755
2007-03-15

Systems and methods to provide wideband magnitude and phase imbalance calibration and compensation in quadrature receivers

#81
20070058745
2007-03-15

Wireless communication apparatus, wireless communication method and computer program therefor

#82
20060280265
2006-12-14

Wireless communication method and apparatus for performing post-detection constellation correction

#83
20060146927
2006-07-06

System for, and method of, processing quadrature amplitude modulated signals

#84
20060039506
2006-02-23

Phase/gain imbalance estimation or compensation

#85
20050207514
2005-09-22

Carrier recovery apparatus

#86
20050152476
2005-07-14

Direct conversion receiver and receiving method

#87
20050135521
2005-06-23

Method and apparatus for compensating I/Q imbalance in receivers

#88
20050100110
2005-05-12

Wireless communication method and apparatus for performing post-detection constellation correction

#89
20050026565
2005-02-03

Pilotless, wireless, telecommunications apparatus, systems and methods having equalization

#90
20050025257
2005-02-03

Pilotless, wireless, telecommunications apparatus, systems and methods

#91
16749277
2020-09-22

Detection of phase rotation modulation

#92
14863418
2017-02-14

Systems and methods for joint demodulation and demapping