ClassID:

225978

H04L27/2275 - CPC Classification

Classification description:

Modulated-carrier systems; Phase-modulated carrier systems, i.e. using phase-shift keying; Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals

Sub-classes:
Recent Application in this class:
#1
20250070786
2025-02-27

Signal receiving apparatus, clock and data recovery circuit and clock and data recovery method thereof

#2
20240406044
2024-12-05

SYSTEMS AND METHODS FOR PROCESSING VARIABLE CODING AND MODULATION (VCM) BASED COMMUNICATION SIGNALS USING FEEDFORWARD CARRIER AND TIMING RECOVERY

#3
20230421159
2023-12-28

Phase mixer non-linearity measurement within clock and data recovery circuitry

#4
20230188142
2023-06-15

Systems and methods for processing variable coding and modulation (VCM) based communication signals using feedforward carrier and timing recovery

#5
20210351965
2021-11-11

Augmented reality generating device, augmented reality display device, and augmented reality system

#6
20210044360
2021-02-11

Probabilistic shaping techniques for high performance coherent optical transceivers

#7
20200295842
2020-09-17

Impairment compensation techniques for high performance coherent optical transceivers

#8
20200244372
2020-07-30

Probabilistic shaping techniques for high performance coherent optical transceivers

#9
20200186394
2020-06-11

Methods, apparatus, and systems to increase common-mode transient immunity in isolation devices

#10
20200099551
2020-03-26

Methods, apparatus, and systems to increase common-mode transient immunity in isolation devices

#11
20190348950
2019-11-14

Phase noise compensation apparatus and method and receiver

#12
20180097593
2018-04-05

Station (STA) and method for usage of phase noise compensation based on operational parameters

#13
20170231000
2017-08-10

User terminal, radio base station and adaptive modulation and coding method

#14
20170171006
2017-06-15

High data rate multilevel clock recovery system

#15
20170171005
2017-06-15

High data rate multilevel clock recovery system

#16
20170171004
2017-06-15

Methods and devices for data demodulation

#17
20160380792
2016-12-29

Receiving method and receiver for satellite-based automatic identification systems

#18
20160337151
2016-11-17

Digital frequency modulation receiver with frequency variation signal and demodulation method used by the same

#19
20160261442
2016-09-08

Digital frequency modulation receiver with frequency variation signal and demodulation method used by the same

#20
20160056985
2016-02-25

Energy efficient highway addressable remote transducer soft modem

#21
20150312073
2015-10-29

Carrier phase and amplitude estimation for phase shift keying using pilots and data

#22
20150295740
2015-10-15

Communication system, receiving device, and semiconductor device

#23
20150280952
2015-10-01

Reception of phase-shifted signal sequences in diversity reception

#24
20150234423
2015-08-20

Baud rate phase detector with no error latches

#25
20140307835
2014-10-16

Carrier frequency and phase recovery in quadrature encoded E-band communications

#26
20120106983
2012-05-03

Optimized normalized least mean square phase estimation

#27
20100142651
2010-06-10

Frame-based carrier frequency and phase recovery system and method

#28
20090154602
2009-06-18

Communications device and related method with reduced false detects during start of message bit correlation

#29
20090028275
2009-01-29

Frame-based carrier frequency and phase recovery system and method

#30
20090017768
2009-01-15

Frequency error estimation and correction

#31
20080116968
2008-05-22

Demodulation method using phase detection and apparatus thereof

#32
20080061870
2008-03-13

Apparatus and methods for demodulating a signal

#33
20080008268
2008-01-10

Recursive phase estimation for a phase-shift-keying receiver

#34
20070165742
2007-07-19

Method for enhancing bluetooth transmission speed and robustness of emitting end and receiving end of communication system

#35
20070127601
2007-06-07

Apparatus and method of deciding received symbol in M-PSK system

#36
20070025430
2007-02-01

Enhanced QPSK or DQPSK data demodulation for direct sequence spreading (DSS) system waveforms using orthogonal or near-orthogonal spreading sequences

#37
20060262875
2006-11-23

Data transmission method with phase shift error correction

#38
20060246865
2006-11-02

Frequency error estimation and correction

#39
20060233283
2006-10-19

Demodulator with individual bit-weighting algorithm

#40
20060222137
2006-10-05

Storage efficient sliding window sum

#41
20060187894
2006-08-24

Phase estimation method in a digital and phase locked loop communication system

#42
20060067432
2006-03-30

Frame-based carrier frequency and phase recovery system and method

#43
20060013336
2006-01-19

Frequency estimation method and system

#44
20050272383
2005-12-08

Transmitter and a method for transmitting data

#45
20050169404
2005-08-04

Demodulator and address information extractor

#46
18211094
2024-09-03

Probabilistic shaping techniques for high performance coherent optical transceivers

#47
17534766
2023-06-20

Probabilistic shaping techniques for high performance coherent optical transceivers

#48
16680478
2020-05-26

Smart phase switching method and smart phase switching system for a timing recovery process

#49
16256971
2020-03-31

Probabilistic shaping techniques for high performance coherent optical transceivers

#50
15146368
2017-04-25

BPSK demodulator

#51
14871721
2017-04-18

Digital I/Q reprocessing demodulator (DIRD)

#52
14791481
2015-11-10

Energy efficient highway addressable remote transducer soft modem

#53
14224996
2015-06-09

Reception of phase-shifted signal sequences in diversity reception