ClassID:

226080

H04L27/3827 - 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 coherent demodulation, i.e. using one or more nominally phase synchronous carriers in which the carrier is recovered using only the demodulated baseband signals

Recent Application in this class:
#1
20230091838
2023-03-23

BASEBAND RECEIVER CIRCUIT

#2
20190013876
2019-01-10

Coherent optical reception device

#3
20180145865
2018-05-24

Phase ambiguity processing method and device for quadrature amplitude modulation signal

#4
20180097579
2018-04-05

Method and device for symbol decision and digital receiver

#5
20180069576
2018-03-08

Time sequenced spectral stitching

#6
20170346670
2017-11-30

Spectral stitching method to increase instantaneous bandwidth in vector signal analyzers

#7
20170250792
2017-08-31

Signal transmission apparatus, carrier phase recovery apparatus and method

#8
20170201278
2017-07-13

RF receiver with frequency tracking

#9
20170093608
2017-03-30

Spectral stitching method to increase instantaneous bandwidth in vector signal analyzers

#10
20160241426
2016-08-18

System and method for transmitting data with useful signal detection at the receiver end

#11
20160197762
2016-07-07

Spectral stitching method to increase instantaneous bandwidth in vector signal analyzers

#12
20160134449
2016-05-12

Cycle-slip detection method and apparatus, and receiver

#13
20160112143
2016-04-21

Blind equalization of dual subcarrier OFDM signals

#14
20150086212
2015-03-26

System and methods for fiber and wireless integration

#15
20150003825
2015-01-01

Feed-forward carrier phase recovery for optical communications

#16
20140334573
2014-11-13

Digital radios

#17
20140050493
2014-02-20

Carrier phase estimation for optically coherent QPSK based on wiener-optimal and adaptive multi-symbol delay detection (MSDD)

#18
20130039449
2013-02-14

Universal systems and methods for determining an incoming carrier frequency and decoding an incoming signal

#19
20120224657
2012-09-06

Carrier recovery circuit and demodulation circuit under quasi-coherent detection method

#20
20110318021
2011-12-29

Feed-forward carrier phase recovery for optical communications

#21
20110116809
2011-05-19

Phase recovery device, phase recovery method and receiver for 16 QAM data modulation

#22
20110063519
2011-03-17

CARRIER RECOVERY DEVICE AND METHOD, AND DEMODULATOR

#23
20100261434
2010-10-14

Phase noise correction circuit, transmitter, receiver, radio device, radio communication system, and phase noise correction method

#24
20100189198
2010-07-29

Universal systems and methods for determining an incoming carrier frequency and decoding an incoming signal

#25
20100166115
2010-07-01

Phase error detection with conditional probabilities

#26
20090213921
2009-08-27

Carrier recovery system and carrier recovery method

#27
20090190695
2009-07-30

Decoding device and method, receiving device and method, and program

#28
20090086808
2009-04-02

Equalization and decision-directed loops with trellis demodulation in high definition TV

#29
20080310551
2008-12-18

Decoder for 4QAM-NR and method thereof

#30
20080112509
2008-05-15

Method and circuit for determining a clock signal sampling instant for symbols of a modulation method

#31
20080063121
2008-03-13

Method for Estimating the Phase and the Gain of Observation Data Transmitted Over a Qam-Modulated Transmission Channel

#32
20070183548
2007-08-09

Synchronizing apparatus and synchronizing method

#33
20070104291
2007-05-10

Apparatus and method for signal mismatch compensation in a wireless receiver

#34
20070058759
2007-03-15

Receiver having decisional feedback equalizer with remodulation and related methods

#35
20070025466
2007-02-01

System and method for transmission and reception of QAM signals at low signal to noise ratio

#36
20060083334
2006-04-20

Noise balanced QAM detection

#37
20050201492
2005-09-15

Carrier lock detector

#38
20050129147
2005-06-16

Method and system for modulating and detecting high datarate symbol communications

#39
20050105651
2005-05-19

Dual mode QAM/VSB receiver

#40
15165498
2017-06-06

Beam position monitor for energy recovered linac beams