ClassID:

226032

H04L27/266 - CPC Classification

Classification description:

Modulated-carrier systems; Systems using multi-frequency codes; Multicarrier modulation systems; Arrangements specific to the receiver only; Synchronisation arrangements; Carrier synchronisation Fine or fractional frequency offset determination and synchronisation

Recent Application in this class:
#1
20250126005
2025-04-17

ELECTRONIC DEVICE AND METHOD FOR PROVIDING FREQUENCY OFFSET IN FRONTHAUL INTERFACE

#2
20250106090
2025-03-27

TRANSPARENCY WINDOW AWARE SEQUENCE SELECTION AND TRANSMISSION PROCEDURE FOR DEVICE DISCOVERY AND RANGE ESTIMATION

#3
20240406050
2024-12-05

SYSTEM AND METHOD FOR CARRIER FREQUENCY OFFSET ESTIMATION

#4
20240372768
2024-11-07

FREQUENCY OFFSET ESTIMATION METHOD AND APPARATUS, ELECTRONIC DEVICE, AND COMPUTER-READABLE STORAGE MEDIUM

#5
20240223484
2024-07-04

WI-FI BASED FINE RANGING USING CARRIER PHASE INFORMATION

#6
20240195672
2024-06-13

Efficient utilization of SSBS in new radio systems

#7
20230198824
2023-06-22

Double-sideband continuous wave test (CWT) tone signals for data over cable service interface specification (DOCSIS) full duplex (FDX) interference group discovery

#8
20230188403
2023-06-15

Methods and apparatus for correcting timing and frequency offsets between communications receivers and transmitters

#9
20230164749
2023-05-25

Method and apparatus for performing fractional subframe transmission

#10
20230093950
2023-03-30

Transparency window aware sequence selection and transmission procedure for device discovery and range estimation

#11
20230023515
2023-01-26

Method and apparatus of NR RMSI coreset configuration in MIB

#12
20230007697
2023-01-05

Method and apparatus for random access channel preamble design in non-terrestrial network communications

#13
20220322120
2022-10-06

Handling fine timing measurement requests

#14
20220311562
2022-09-29

Method for multi-user transmission and reception in wireless communication system and device for same

#15
20220239541
2022-07-28

Sub-nanosecond RF synchronization for MIMO software defined radio sensor networks

#16
20220200828
2022-06-23

Method of performing synchronization and frequency offset estimation based on simultaneous phase compensation of single training sequence and receiver performing the same

#17
20220150099
2022-05-12

METHOD AND APPARATUS FOR PERFORMING FRACTIONAL SUBFRAME TRANSMISSION

#18
20210392596
2021-12-16

Preamble symbol receiving method and device

#19
20210211340
2021-07-08

Method and apparatus for synchronization signals and random access for flexible radio communication

#20
20210194745
2021-06-24

Efficient utilization of SSBs in new radio systems

#21
20210120590
2021-04-22

Method and apparatus for random access channel preamble design in non-terrestrial network communications

#22
20210119842
2021-04-22

System and method for low-rate high-rate coupled acquisition and tracking of high symbol rate inroutes

#23
20200413239
2020-12-31

Presence discovery techniques

#24
20200374169
2020-11-26

Preamble symbol generation and receiving method, and frequency-domain symbol generation method and device

#25
20200374168
2020-11-26

Preamble symbol generation and receiving method, and frequency-domain symbol generation method and device

#26
20200374167
2020-11-26

Preamble symbol generation and receiving method, and frequency-domain symbol generation method and device

#27
20200374166
2020-11-26

Preamble symbol generation and receiving method, and frequency-domain symbol generation method and device

#28
20200344097
2020-10-29

Method and apparatus of NR RMSI CORESET configuration in MIB

#29
20200252916
2020-08-06

Configuration of the initial active bandwidth part for initial network access

#30
20200252250
2020-08-06

Bluetooth transmitter with stable modulation index

#31
20200252121
2020-08-06

Techniques for expanding communication range between wireless devices

#32
20200228381
2020-07-16

Configurable reference signal time difference measurement (RSTD) search window

#33
20200220689
2020-07-09

Systems and methods for mapping DMRS configuration to phase noise tracking pilot for improved receiver performance

#34
20200195256
2020-06-18

Peak-adaptive sampling demodulation for radiofrequency transceivers

#35
20200178189
2020-06-04

Clean-slate synchronization signal design and cell search algorithms

#36
20200162137
2020-05-21

Eigenvalue decomposition precoding matrix index selection

#37
20200145269
2020-05-07

Preamble symbol transmitting method and device

#38
20200136877
2020-04-30

Broadcast signal transmission device, broadcast signal reception device, broadcast signal transmission method, and broadcast signal reception method

#39
20200136873
2020-04-30

Preamble symbol receiving method and device

#40
20200067755
2020-02-27

Efficient utilization of SSBs in new radio systems

#41
20200044798
2020-02-06

Method for multi-user transmission and reception in wireless communication system and device for same

#42
20200007186
2020-01-02

Low-power, frequency-hopping, wide-area network with random medium access

#43
20190349241
2019-11-14

Resource grid offset indication in mixed numerologies

#44
20190327043
2019-10-24

System and method for common phase error and inter-carrier interference estimation and compensation

#45
20190327042
2019-10-24

System and method for common phase error and inter-carrier interference estimation and compensation

#46
20190268196
2019-08-29

Method and system for processing frequency offset

#47
20190239176
2019-08-01

Clean-slate synchronization signal design and cell search algorithms

#48
20190215216
2019-07-11

Resource grid offset indication in mixed numerologies

#49
20190215207
2019-07-11

Automatic frequency controllers for adjusting digital loop filter gain based on wireless channel classification, wireless communication devices including the same, automatic frequency control methods. and wireless communication methods

#50
20190215206
2019-07-11

OFDM system synchronization tracking method and apparatus

#51
20190199500
2019-06-27

Systems and methods for mapping DMRS configuration to phase noise tracking pilot for improved receiver performance

#52
20190182002
2019-06-13

Synchronization signals for narrowband operation

#53
20190165911
2019-05-30

Synchronization signals for narrowband operation

#54
20190158157
2019-05-23

Multi-user-MIMO detection using space-time equalization

#55
20190150121
2019-05-16

Configuration of the initial active bandwidth part for initial network access

#56
20190132825
2019-05-02

Wireless communications system, base station, and terminal

#57
20190132170
2019-05-02

Method and apparatus of NR RMSI coreset configuration in MIB

#58
20190116066
2019-04-18

Preamble detection and time-of-arrival estimation for a single-tone frequency hopping random access preamble

#59
20190109749
2019-04-11

Phase tracking reference signal

#60
20190081834
2019-03-14

Apparatus for radio frequency receiver with improved timing recovery and frequency offset estimation and associated methods

#61
20190068428
2019-02-28

Dynamically convey information of demodulation reference signal and phase noise compensation reference signal

#62
20190068421
2019-02-28

Preamble symbol receiving method and device

#63
20190068420
2019-02-28

Preamble symbol generation and receiving method, and frequency-domain symbol generation method and device

#64
20190044774
2019-02-07

CLOCK SYNCHRONIZER TO SYNCHRONIZE A DEVICE CLOCK WITH A CLOCK OF A REMOTE DEVICE

#65
20190028209
2019-01-24

Frequency/phase synthesizer noise cancellation

#66
20190013988
2019-01-10

Scanning in a wireless network

#67
20180359066
2018-12-13

Packets with midambles having compressed OFDM symbols

#68
20180331804
2018-11-15

Systems and methods for mapping DMRS configuration to phase noise tracking pilot for improved receiver performance

#69
20180294910
2018-10-11

Method and device for transmitting and receiving secondary synchronization signal in wireless access system supporting narrowband Internet of things

#70
20180287823
2018-10-04

Roll-off period detecting method, symbol starting point detecting method, fractional frequency offset estimating method, and OFDM downstream system thereof

#71
20180248738
2018-08-30

Apparatus for a radio device

#72
20180234280
2018-08-16

Extremely precise frequency estimation apparatus and method for single receiver

#73
20180183643
2018-06-28

Automatic frequency controllers for adjusting digital loop filter gain based on wireless channel classification, wireless communication devices including the same, automatic frequency control methods and wireless communication methods

#74
20180183642
2018-06-28

Methods and systems for correction of carrier frequency offset (CFO) in wireless transceivers

#75
20180098298
2018-04-05

Method and apparatus for synchronization signals and random access for flexible radio communication

#76
20180097672
2018-04-05

Method and apparatus for synchronization signals and random access for flexible radio communication

#77
20180041370
2018-02-08

Methods and apparatus for synchronization in multiple-channel communication systems

#78
20170373898
2017-12-28

Wireless communication device and method therein for time synchronization in a wireless communication network

#79
20170373808
2017-12-28

Method for multi-user transmission and reception in wireless communication system and device for same

#80
20170338994
2017-11-23

Receiver and method of receiving

#81
20170338907
2017-11-23

Transmitter and receiver and methods of transmitting and receiving

#82
20170331664
2017-11-16

Methods and apparatus for frequency offset estimation

#83
20170324587
2017-11-09

Preamble detection and time-of-arrival estimation for a single-tone frequency hopping random access preamble

#84
20170302495
2017-10-19

Dynamically convey information of demodulation reference signal and phase noise compensation reference signal

#85
20170294953
2017-10-12

MULTI-USER MULTIPLE INPUT MULTIPLE OUTPUT COMMUNICATIONS IN WIRELESS LOCAL AREA NETWORKS AND WIRELESS TRANSMIT AND RECEIVER UNITS

#86
20170207943
2017-07-20

Preamble symbol generation and receiving method, and frequency-domain symbol generation method and device

#87
20170201405
2017-07-13

Preamble symbol receiving method and device

#88
20170201278
2017-07-13

RF receiver with frequency tracking

#89
20170195155
2017-07-06

Preamble symbol transmitting method and device, and preamble symbol receiving method and device

#90
20170188191
2017-06-29

Broadcast time-of-departure (TOD) frame format

#91
20170187557
2017-06-29

Preamble symbol generation and receiving method, and frequency-domain symbol generation method and device

#92
20170135052
2017-05-11

Clean-slate synchronization signal design and cell search algorithms

#93
20170126460
2017-05-04

Radio communications system and method with increased transmission capacity based on frequency twisted waves

#94
20170126459
2017-05-04

Exploitation of frequency twisted waves in wireless communication systems to increase transmission capacity thereof

#95
20170111197
2017-04-20

High-precision blind carrier synchronization methods for LTE SC-FDMA uplink

#96
20170111143
2017-04-20

Detecting format of data

#97
20170093606
2017-03-30

Radio communications system and method with increased transmission capacity

#98
20170093540
2017-03-30

Synchronization signals for narrowband operation

#99
20170086024
2017-03-23

Ranging and/or localization service based on mobile device privilege

#100
20170048091
2017-02-16

Frequency compensation techniques and systems

#101
20170041912
2017-02-09

Wireless communications system, base station, and terminal

#102
20160323131
2016-11-03

Methods and apparatus for synchronization in multiple-channel communication systems

#103
20160156493
2016-06-02

Method and device for estimating frequency offset of reception signal

#104
20160134457
2016-05-12

Robust scalable and adaptive frequency estimation and frequency tracking for wireless systems

#105
20160006592
2016-01-07

Blind phase tracking method for a filter bank multi-carrier (FBMC)receiver

#106
20150372847
2015-12-24

OFDM packets time synchronisation

#107
20150319024
2015-11-05

Direct synthesis of OFDM receiver clock

#108
20150282171
2015-10-01

Frequency error correction for LTE uplink CoMP

#109
20150215884
2015-07-30

Method and related mobile device for reference signal time difference based localization

#110
20150215142
2015-07-30

Radio receiver and frequency correcting method therefor

#111
20150215071
2015-07-30

Method and a node for detecting phase noise in MIMO communication systems

#112
20150188746
2015-07-02

Method and system for performing initial ranging in cognitive radio network

#113
20150139219
2015-05-21

Method and apparatus for estimating frequency errors

#114
20150117575
2015-04-30

Method, system and apparatus for carrier frequency offset correction and channel estimation

#115
20150078764
2015-03-19

Frequency synchronization for an OFDM optical receiver

#116
20140146859
2014-05-29

Efficient frequency estimation

#117
20140112378
2014-04-24

Robust scalable and adaptive frequency estimation and frequency tracking for wireless systems

#118
20140075258
2014-03-13

Iterative receiver loop

#119
20140056392
2014-02-27

Frequency offset compensation improvement for a long term evolution (LTE) searcher

#120
20130329815
2013-12-12

Systems and methods for implementing improved frequency estimation

#121
20130322584
2013-12-05

Systems and methods for fast and precise frequency estimation

#122
20130315342
2013-11-28

Method and device for transmitting a preamble in a wireless communication system

#123
20130315211
2013-11-28

Airsync: enabling distributed multiuser MIMO with full multiplexing gain

#124
20130230127
2013-09-05

Methods and apparatus for synchronization in multiple-channel communication systems

#125
20130003568
2013-01-03

Frequency offset estimation scheme in scheduled based wireless system

#126
20120314820
2012-12-13

High-Performance Orthogonal Frequency Division Multiplexing Receiver

#127
20120314818
2012-12-13

Digital communications receiver and method of estimating residual carrier frequency offset in a received signal

#128
20120314591
2012-12-13

Tracking loop design for unicast and multicast/broadcast signals

#129
20120243625
2012-09-27

Treatment process of a multicarrier signal with filter banks for synchronisation by preamble

#130
20120163507
2012-06-28

Carrier recovery method and carrier recovery device for pseudo random noise based system

#131
20120163497
2012-06-28

Channel estimation based on long training symbol with doubled cyclic prefix

#132
20120106618
2012-05-03

Method for receiving frequency domain multiplexed signal and device for receiving frequency domain multiplexed signal

#133
20120093244
2012-04-19

Apparatus and methods for compensating for signal imbalance in a receiver

#134
20120087449
2012-04-12

Methods and apparatus for synchronization in multiple-channel communication systems

#135
20120051417
2012-03-01

Frequency offset and channel gain tracking for enhanced transmission efficiency

#136
20120014467
2012-01-19

Method of and equipment for compensating carrier frequency offset in an orthogonal frequency division multiplexing wireless radio transmission system

#137
20110293032
2011-12-01

Method and apparatus for mitigating the residual CFO effect on channel estimation for OFDM receivers

#138
20110274219
2011-11-10

Apparatus for estimating frequency offset in OFDM system

#139
20110268104
2011-11-03

Method and apparatus for initial acquisition and cell search for an OFDMA system

#140
20110268079
2011-11-03

METHOD AND APPARATUS FOR INITIAL ACQUISITION AND CELL SEARCH FOR AN OFDMA SYSTEM

#141
20110255864
2011-10-20

Carrier frequency offset (CFO) estimator with low complexity and high accuracy for orthogonal-frequency-division-multiplexing (CO-OFDM) systems

#142
20110122979
2011-05-26

Apparatus and methods for estimating and compensating sampling clock offset

#143
20110116562
2011-05-19

Digital communications receiver and method of estimating residual carrier frequency offset in a received signal

#144
20110110445
2011-05-12

System and method for estimation and correction of carrier frequency offset in MIMO-OFDM based wireless communications systems

#145
20110103523
2011-05-05

Single-burst acquisition for wireless communication system

#146
20110075745
2011-03-31

Reducing transmitter-to-receiver non-linear distortion at a transmitter prior to estimating and cancelling known non-linear distortion at a receiver

#147
20110064175
2011-03-17

Methods and an apparatus for estimating a residual frequency error in a comunications system

#148
20110044408
2011-02-24

OFDM reception

#149
20110019782
2011-01-27

Signal processing apparatus and method

#150
20110013732
2011-01-20

Receiver and method

#151
20110002425
2011-01-06

CARRIER FREQUENCY OFFSET SYNCHRONIZER FOR OFDM RECEIVER AND METHOD

#152
20100310022
2010-12-09

Data processing apparatus and method

#153
20100309972
2010-12-09

Receiving apparatus, receiving method and program, and receiving system

#154
20100266077
2010-10-21

Methods and systems with simplified doppler spread classification

#155
20100260233
2010-10-14

Phase tracking in frequency domain in a wireless communication system

#156
20100246698
2010-09-30

Synchronization method and apparatus for orthogonal frequency division multiplexing system

#157
20100239033
2010-09-23

Joint carrier synchronization and channel equalization method for OFDM systems

#158
20100232552
2010-09-16

Synchronization and acquisition for mobile television reception

#159
20100220819
2010-09-02

Methods and systems using fine frequency tracking loop design for WiMAX

#160
20100202546
2010-08-12

CARRIER FREQUENCY OFFSET ESTIMATION FOR MULTICARRIER COMMUNICATION SYSTEMS

#161
20100118990
2010-05-13

Apparatus for synchronizing OFDM signal using open-loop frequency synchronization method and frequency offset estimation scheme using the apparatus

#162
20100040043
2010-02-18

Systems and methods for performing initial synchronization in wireless communications systems

#163
20090310691
2009-12-17

METHODS AND SYSTEMS FOR CARRIER FREQUENCY OFFSET ESTIMATION AND CORRECTION OFDM/OFDMA SYSTEMS

#164
20090279421
2009-11-12

Apparatus and methods for estimating and compensating sampling clock offset

#165
20090252026
2009-10-08

Timing and frequency acquisition for mediaflo systems

#166
20090245403
2009-10-01

Methods and apparatus for use in reducing residual phase error in OFDM communication signals

#167
20090185646
2009-07-23

Estimating frequency shift

#168
20090175394
2009-07-09

Methods and apparatus for synchronization and detection in wireless communication systems

#169
20090154613
2009-06-18

Timing-frequency offset and carrier-frequency offset estimations for multi-carrier modulated signals using pilot tones

#170
20090141836
2009-06-04

Reception device

#171
20090135977
2009-05-28

Device for and method of signal synchronization in a communication system

#172
20090086841
2009-04-02

Platform noise mitigation

#173
20090073869
2009-03-19

Receiver architecture for pilot based OFDM systems

#174
20090060101
2009-03-05

Method and apparatus for carrier frequency offset synchronization of orthogonal frequency division multiplexing receivers

#175
20090041161
2009-02-12

DC offset estimation system and method

#176
20090041095
2009-02-12

Method and apparatus for fine frequency synchronization in wireless broadband (WiBro) system without using global positioning system (GPS) receiver

#177
20090003471
2009-01-01

OFDM signal acquisition

#178
20080317143
2008-12-25

Apparatus and method for correcting iterative residual frequency and phase in turbo coded OFDM system

#179
20080310566
2008-12-18

FREQUENCY SYNCHRONIZING CIRCUIT, METHOD, AND RECEIVING APPARATUS USING THE CIRCUIT AND THE METHOD

#180
20080291893
2008-11-27

OFDM-based device and method for performing synchronization in the presence of interference signals

#181
20080192874
2008-08-14

Apparatus and method for initial fractional frequency offset estimation in a broadband wireless access communication system

#182
20080186949
2008-08-07

Preamble design for synchronization and cell search

#183
20080152018
2008-06-26

Fast re-synchronization techniques for DVB-H systems

#184
20080137768
2008-06-12

Apparatus and method of compensating for frequency offset in OFDMA system

#185
20080137563
2008-06-12

Automatic frequency offset compensation in a TDD wireless OFDM communication system

#186
20080130779
2008-06-05

Apparatus and methods for compensating for signal imbalance in a receiver

#187
20080101499
2008-05-01

Transmitter, method for generating a plurality of long preambles and communication device

#188
20080101492
2008-05-01

Method for Tracking Phase Noise in an OFDM System

#189
20080095250
2008-04-24

Receiver and method for compensating for frequency offset of receiving signal in multi-band OFDM scheme

#190
20080075212
2008-03-27

Method of initial synchronization of a communication signal

#191
20080043882
2008-02-21

WIRELESS COMMUNICATION METHOD AND APPARATUS FOR PERFORMING HYBRID TIMING AND FREQUENCY OFFSET FOR PROCESSING SYNCHRONIZATION SIGNALS

#192
20080019454
2008-01-24

Fractional carrier frequency offset estimator and method of estimating fractional carrier frequency offset between transmitter and receiver

#193
20080002794
2008-01-03

Single-burst acquistion for wireless communication system

#194
20070280394
2007-12-06

Method for determining a residual frequency offset, communication system, method for transmitting a message, transmitter, method for processing a message and receiver

#195
20070280098
2007-12-06

Method, apparatus and computer program product providing synchronization for OFDMA downlink signal

#196
20070258524
2007-11-08

Phase offset tracking method for tracking a phase offset and device thereof

#197
20070253497
2007-11-01

Phase tracking method and device thereof

#198
20070223605
2007-09-27

Method and apparatus for correcting sampler clock frequency offset in OFDM MIMO systems

#199
20070183307
2007-08-09

Method and apparatus for initial acquisition and cell search for an OFDMA system

#200
20070160158
2007-07-12

OFDMA device and method of correcting frequency offset in OFDMA signals

#201
20070133699
2007-06-14

Apparatus and method for recovering frequency in an orthogonal frequency division multiplexing system

#202
20070133386
2007-06-14

Downlink signal configuring method and device in mobile communication system, and synchronization and cell searching method and device using the same

#203
20070071123
2007-03-29

Synchronization method, receiver, network element, communication device, electronic device, computer program product and computer program distribution medium

#204
20070047671
2007-03-01

Frequency tracking and channel estimation in orthogonal frequency division multiplexing systems

#205
20070041312
2007-02-22

Sampling frequency offset tracking method and OFDM system using the same

#206
20060271611
2006-11-30

Frequency syncrhonization apparatus and method for OFDM system

#207
20060239370
2006-10-26

Time and frequency synchronization in Multi-Input, Multi-Output (MIMO) systems

#208
20060233288
2006-10-19

Method and apparatus for coarse and fine frequency and timing synchronisation

#209
20060215778
2006-09-28

Automatic frequency control for a wireless communication system with multiple subcarriers

#210
20060193392
2006-08-31

Apparatus for and method of compensation for frequency offset and channel variation in MIMO-OFDM receiver

#211
20060159188
2006-07-20

Wireless communication apparatus and wireless communication method

#212
20060153317
2006-07-13

Digital video broadcasting terrestrial receivers and methods that select channels and fast fourier transform windows

#213
20060133527
2006-06-22

Residual frequency, phase, timing offset and signal amplitude variation tracking apparatus and methods for OFDM systems

#214
20060120487
2006-06-08

Frequency offset estimating method and frequency offset correcting apparatus utilizing said method

#215
20060104257
2006-05-18

Method and apparatus for time and frequency synchronization of OFDM communication systems

#216
20060088125
2006-04-27

Multicarrier receiver and transmitter with delay correcting function

#217
20060062317
2006-03-23

Apparatus and method for frequency synchronization in OFDM system

#218
20060039491
2006-02-23

Frequency recovery apparatus and mobile broadcast receiver using the frequency recovery apparatus

#219
20050276254
2005-12-15

Methods and apparatus for use in reducing residual phase error in OFDM communication signals

#220
20050213678
2005-09-29

Tracking system comprised in an OFDM receiver

#221
20050175114
2005-08-11

Wide frequency offset correction using encoded interburst phase differences

#222
20050163238
2005-07-28

Transceiver apparatus and transceiving method

#223
20050147026
2005-07-07

Synchronization in OFDM systems

#224
20050129135
2005-06-16

Method and apparatus for compensating for residual frequency offset in an OFDM system

#225
20050125176
2005-06-09

Frequency and timing error estimation and corresponding channel characterization in a communication system

#226
20050122895
2005-06-09

Residual frequency error estimation in an OFDM receiver

#227
20050084023
2005-04-21

Method for the frequency and time synchronization of an odm receiver

#228
20050036564
2005-02-17

Method for processing an OFDM signal

#229
20050025264
2005-02-03

Device and method of estimating frequency offset in radio receiver

#230
18764472
2025-12-30

Determining frequency offset of signal under test

#231
16156591
2019-09-03

Orthogonal frequency division multiplex data unit generation and decoding

#232
16134340
2019-10-22

Doppler estimation and compensation for wireless communication systems

#233
15186011
2018-11-06

Orthogonal frequency division multiplex data unit generation and decoding

#234
14747510
2016-08-02

Carrier frequency synchronization of data

#235
14744833
2017-01-24

Method and apparatus for frequency offset detection in OFDM systems with frequency reuse

#236
14281012
2016-05-31

Frequency offset acquisition for wireless communications

#237
14146665
2015-07-28

MIMO-OFDM receiver processing

#238
13773784
2014-05-13

Systems and methods for performing frequency offset estimation