ClassID:

226027

H04L27/2653 - CPC Classification

Classification description:

Modulated-carrier systems; Systems using multi-frequency codes; Multicarrier modulation systems; Arrangements specific to the receiver only; Demodulators with direct demodulation of individual subcarriers

Recent Application in this class:
#1
20260075527
2026-03-12

WAKE-UP SIGNAL WITH OVERLAID CONTROL CHANNEL FOR WIRELESS COMMUNICATIONS

#2
20260025303
2026-01-22

COMMUNICATION METHOD, NETWORK DEVICE, TERMINAL DEVICE, AND COMMUNICATION SYSTEM

#3
20240422044
2024-12-19

DATA TRANSMISSION METHOD, DATA RECEIVING METHOD, NETWORK DEVICE, AND STORAGE MEDIUM

#4
20210336834
2021-10-28

Repetition on subcarriers for noncoherent modulation

#5
20210336833
2021-10-28

REPETITION ON SUBCARRIERS FOR NONCOHERENT MODULATION

#6
20210336754
2021-10-28

Boosted noncoherent modulation

#7
20180367360
2018-12-20

Method for determining location in frequency domain, base station, computer-readable medium and system

#8
20180351776
2018-12-06

METHOD AND SYSTEM FOR DEMODULATING HIGH-ORDER QAM SIGNALS

#9
20180083811
2018-03-22

Demodulation reference signal based automatic gain control

#10
20180013600
2018-01-11

Multiplex modules for carrier aggregation receivers

#11
20170347271
2017-11-30

Uplink and/or downlink signaling related to different radio access technologies

#12
20170346507
2017-11-30

Apparatus and method for reduced computation amplifier gain control

#13
20170288933
2017-10-05

WIRELESS SIGNAL RECEIVER

#14
20170048032
2017-02-16

Methods of data allocation in subcarriers and related apparatuses using the same

#15
20170048030
2017-02-16

Methods of data allocation and signal receiving, wireless transmitting apparatus and wireless receiving apparatus

#16
20160337019
2016-11-17

Method and apparatus for transmitting reference signal

#17
20160112235
2016-04-21

Signal modulation method, signal demodulation method, signal modulation apparatus, signal demodulation apparatus and signal transmission system

#18
20150333949
2015-11-19

Multiplex modules for carrier aggregation receivers

#19
20150326419
2015-11-12

RADIO SYSTEM FOR SIMULTANEOUS MULTI-CHANNEL RECEPTION

#20
20150162964
2015-06-11

Method and apparatus for transmitting reference signal

#21
20150131761
2015-05-14

System and method for increasing spot beam satellite bandwidth

#22
20150055735
2015-02-26

Multi-user mimo receiver and method for receiving data units over a wideband channel

#23
20150049700
2015-02-19

Method and device for allocating and detecting downlink control channel resources

#24
20140226762
2014-08-14

Multi-user MIMO receiver and method for receiving data units over a wideband channel

#25
20130266094
2013-10-10

RECEIVER, RECEIVING METHOD AND COMPUTER PROGRAM

#26
20130121706
2013-05-16

Signal transmission and reception device and method

#27
20120269234
2012-10-25

Double-layer multi-carrier ultra-wideband wireless communication method

#28
20120251098
2012-10-04

Method, apparatus and system for high-speed transmission on fiber optic channel

#29
20120243647
2012-09-27

Synchronous detection method and device

#30
20120213508
2012-08-23

Network element clock synchronization systems and methods using optical transport network delay measurement

#31
20120163824
2012-06-28

Forward discrete/inverse-discrete Fourier transform device and method for optical OFDM communication and transmitting and receiving apparatus comprising the device

#32
20120044975
2012-02-23

Multi-carrier receiver, multi-carrier transmitter and multi-carrier transceiver system

#33
20120033630
2012-02-09

Method and apparatus for transmitting reference signal

#34
20110142148
2011-06-16

Orthogonal Frequency Division Multiplex Transmission Method

#35
20110110467
2011-05-12

Multi-user MIMO receiver and method for receiving data units over a wideband channel

#36
20110096854
2011-04-28

Communications system utilizing orthogonal linear frequency modulated waveforms

#37
20100290551
2010-11-18

METHOD, APPARATUS AND SYSTEM FOR HIGH-SPEED TRANSMISSION ON FIBER OPTIC CHANNEL

#38
20100239052
2010-09-23

Wideband digital receiver with integrated dynamic narrowband channelization and analysis

#39
20100202775
2010-08-12

Method, apparatus and system for high-speed transmission on fiber optic channel

#40
20100189132
2010-07-29

Method and apparatus for multi-carrier frequency division multiplexing transmission

#41
20100183098
2010-07-22

Method and system of differential complex and real multi-carrier demodulation

#42
20100178057
2010-07-15

Signal method and apparatus

#43
20100142598
2010-06-10

Wireless frequency-domain multi-channel communications

#44
20100067365
2010-03-18

Transmission system, transmission method, transmitter, receiver, decoding method, and decoder

#45
20100054357
2010-03-04

Radio communication system

#46
20100020898
2010-01-28

Adjustable dual-band link

#47
20090238305
2009-09-24

METHOD, APPARATUS AND SYSTEM FOR HIGH-SPEED TRANSMISSION

#48
20090180778
2009-07-16

Forward discrete/inverse-discrete Fourier transform device and method for optical OFDM communication and transmitting and receiving apparatus comprising the device

#49
20090175382
2009-07-09

Process for receiving a broadband electromagnetic signal

#50
20090154584
2009-06-18

Apparatus and method for communication in variable bands

#51
20090110123
2009-04-30

Method and apparatus for transmitting high speed data by spectral decomposition of the signaling space

#52
20090067537
2009-03-12

Adjustable dual-band link

#53
20090022248
2009-01-22

Method for demodulating the signal of multiple-position frequency manipulation with equidistant frequency spreading, demodulator for this signal, and computer-readable medium

#54
20090010352
2009-01-08

Cyclic redundancy in ODFM systems

#55
20080310529
2008-12-18

Radio transmitting apparatus and radio receiving apparatus

#56
20080285671
2008-11-20

Adaptive MaxLogMAP-type receiver structures

#57
20080279309
2008-11-13

Multi-band DMT receiver

#58
20080170641
2008-07-17

Method, apparatus and system for high-speed transmission on fiber optic channel

#59
20080137783
2008-06-12

Adjustable dual-band link

#60
20080100387
2008-05-01

Multiple frequency generator for quadrature amplitude modulated communications

#61
20080063401
2008-03-13

Method, apparatus and system for high-speed transmission on fiber optic channel

#62
20070183310
2007-08-09

Orthogonal frequency division multiplex transmission method

#63
20070183309
2007-08-09

Transmission delay utilizing orthogonal frequency division multiplex transmission method

#64
20070183308
2007-08-09

OFDM Multiple Sub-Channel Communication System

#65
20070110198
2007-05-17

Variable bandwidth receiver

#66
20070092263
2007-04-26

Method, apparatus and system for high-speed transmission on fiber optic channel

#67
20070064773
2007-03-22

Multi-carrier spread spectrum using non-linear modification of sub-carrier bands

#68
20070047968
2007-03-01

Method, apparatus and system for high-speed transmission on fiber optic channel

#69
20070030916
2007-02-08

System and method for demodulating multiple QAM signals

#70
20060133538
2006-06-22

Adjustable dual-band link

#71
20060018344
2006-01-26

Approximate bit-loading for data transmission over frequency-selective channels

#72
20050141406
2005-06-30

Quasi-parallel multichannel receivers for wideband orthogonal frequency division multiplexed communications and associated methods

#73
20050068887
2005-03-31

High speed modulation of optical subcarriers

#74
19196726
2025-10-21

Receiver for wireless power and broadband data

#75
16551721
2020-07-14

Leakage detection for OFDM system with fixed pilot

#76
14729308
2017-05-30

Feed-forward phase tracking