ClassID:

226031

H04L27/2659 - 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 Coarse or integer frequency offset determination and synchronisation

Recent Application in this class:
#1
20260150072
2026-05-28

CONFIGURING REFERENCE SIGNAL COMMUNICATION FOR MULTIPLE DEVICES

#2
20250358756
2025-11-20

METHOD OF COMPENSATING A CLOCK OFFSET BETWEEN DEVICES IN A UWB-MMS RANGING PROCESS

#3
20250106090
2025-03-27

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

#4
20250016085
2025-01-09

REDUCED HEADER SIGNAL INFORMATION TESTING SYSTEMS AND METHODS

#5
20240406050
2024-12-05

SYSTEM AND METHOD FOR CARRIER FREQUENCY OFFSET ESTIMATION

#6
20240223484
2024-07-04

WI-FI BASED FINE RANGING USING CARRIER PHASE INFORMATION

#7
20240205824
2024-06-20

FAST WAKEUP RECOVERY FOR NBIOT SYSTEMS

#8
20240195672
2024-06-13

Efficient utilization of SSBS in new radio systems

#9
20230412446
2023-12-21

Method for Determining Transmission Slot and Related Apparatus

#10
20230300762
2023-09-21

Method, apparatus and system for indicating carrier frequency offset

#11
20230113223
2023-04-13

Method and apparatus for performing initial access in wireless communication system

#12
20230097689
2023-03-30

Coarse and fine compensation for frequency error

#13
20230093950
2023-03-30

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

#14
20220263538
2022-08-18

Multi-radio synchronization within a single connected system

#15
20220247607
2022-08-04

System and method for high-entropy gaussian minimum shift keying (HE-GMSK) modulation

#16
20220166651
2022-05-26

Wireless communication device and packet protection method thereof

#17
20220078066
2022-03-10

Synchronization signal transmission method, transmitting end device and receiving end device

#18
20210376982
2021-12-02

RADIO TRANSMISSION APPARATUS AND METHODS

#19
20210376879
2021-12-02

Multi-radio synchronization within a single connected system

#20
20210367719
2021-11-25

Method and device for representing quasi co-location parameter configuration, and transmitting and receiving apparatus

#21
20210359889
2021-11-18

Symbol generator and symbol generation method

#22
20210243820
2021-08-05

Method of determining frequency-domain offset parameter, user equipment (UE), random access method, method for configuring random access information, corresponding device and computer readable medium

#23
20210218506
2021-07-15

Methods and systems for HARQ protocols

#24
20210211336
2021-07-08

Synchronization apparatus and method for upstream system

#25
20210194745
2021-06-24

Efficient utilization of SSBs in new radio systems

#26
20210194743
2021-06-24

Anti-interference signal detection and synchronization method for wireless broadband communication system

#27
20210185624
2021-06-17

Synchronization signal transmission method, transmitting end device and receiving end device

#28
20210176109
2021-06-10

Robust carrier phase and frequency tracking for M-QAM demodulation

#29
20210167915
2021-06-03

Methods and apparatus for transmitting modulation signals

#30
20210160120
2021-05-27

Method and apparatus for performing initial access in wireless communication system

#31
20210099332
2021-04-01

Transmitting device, receiving device and methods thereof

#32
20210044464
2021-02-11

Frequency offset estimation method for OFDM-IM system

#33
20200413239
2020-12-31

Presence discovery techniques

#34
20200403839
2020-12-24

Method and apparatus for the decomposition of signals with varying envelope into offset components

#35
20200274750
2020-08-27

Method and apparatus for performing initial access in wireless communication system

#36
20200252121
2020-08-06

Techniques for expanding communication range between wireless devices

#37
20200244416
2020-07-30

Methods and apparatus for transmitting modulation signals

#38
20200220687
2020-07-09

Radio transmission apparatus and methods for transmitting a single or a plurality of modulation signals from one or more antenna

#39
20200178189
2020-06-04

Clean-slate synchronization signal design and cell search algorithms

#40
20200162301
2020-05-21

Optimized preamble and method for interference robust packet detection for telemetry applications

#41
20200162300
2020-05-21

Optimized preamble and method for interference robust packet detection for telemetry applications

#42
20200162137
2020-05-21

Eigenvalue decomposition precoding matrix index selection

#43
20200136881
2020-04-30

Transmitting device, receiving device and methods thereof

#44
20200136877
2020-04-30

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

#45
20200112399
2020-04-09

Methods and systems for HARQ protocols

#46
20200099565
2020-03-26

High resolution timing advance estimation based on PRACH and sparse IFFT algorithm for LTE PRACH

#47
20200076666
2020-03-05

Test device and test method for testing a communication

#48
20200067755
2020-02-27

Efficient utilization of SSBs in new radio systems

#49
20200052851
2020-02-13

Transmission and reception signal processor and method

#50
20190357258
2019-11-21

Analysis method for multi-user random access signals

#51
20190349238
2019-11-14

OFDM receiver

#52
20190312701
2019-10-10

Methods and apparatus for transmitting modulation signals

#53
20190296868
2019-09-26

Method and device for representing quasi co-location parameter configuration, and transmitting and receiving apparatus

#54
20190273595
2019-09-05

Radio transmission apparatus and methods

#55
20190253100
2019-08-15

Techniques for flexible resource allocation

#56
20190239176
2019-08-01

Clean-slate synchronization signal design and cell search algorithms

#57
20190215877
2019-07-11

Method of determining frequency-domain offset parameter, user equipment (UE), random access method, method for configuring random access information, corresponding device and computer readable medium

#58
20190199495
2019-06-27

Transmission and reception signal processor and method

#59
20190158333
2019-05-23

Training field assisted medium sensing across multiple radio access technologies

#60
20190116066
2019-04-18

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

#61
20190044780
2019-02-07

Synchronization device and synchronization method

#62
20190036757
2019-01-31

Optimized preamble and method for interference robust packet detection for telemetry applications

#63
20190036756
2019-01-31

Method and apparatus for indicating center frequency offset for narrowband UE in wireless communication system

#64
20190013988
2019-01-10

Scanning in a wireless network

#65
20190013976
2019-01-10

Systems and methods for determining and compensating for offsets in RF communications

#66
20180331874
2018-11-15

Method for estimating carrier frequency offset with timing synchronization in wireless receiver

#67
20180317185
2018-11-01

Method, apparatus and system for indicating carrier frequency offset

#68
20180302204
2018-10-18

Transmission and reception signal processor and method

#69
20180294925
2018-10-11

Methods and systems for HARQ protocols

#70
20180270008
2018-09-20

Method and apparatus for performing cell search in wireless communication system

#71
20180262309
2018-09-13

Methods and apparatus for transmitting modulation signals

#72
20180249509
2018-08-30

Method and apparatus for performing random access procedure in NB-IoT carrier in wireless communication system

#73
20180248738
2018-08-30

Apparatus for a radio device

#74
20180234280
2018-08-16

Extremely precise frequency estimation apparatus and method for single receiver

#75
20180220387
2018-08-02

Synchronization signal transmission method and apparatus

#76
20180212725
2018-07-26

Method for transmitting/receiving PPDU in wireless communication system and apparatus therefor

#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
20170346669
2017-11-30

Method and apparatus for extracting resource block from signal

#80
20170331664
2017-11-16

Methods and apparatus for frequency offset estimation

#81
20170324587
2017-11-09

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

#82
20170310503
2017-10-26

Transmission and reception signal processor and method

#83
20170279652
2017-09-28

Method and wireless communication device for estimating frequency offset of received signal

#84
20170230225
2017-08-10

Radio transmission apparatus and methods

#85
20170222762
2017-08-03

Methods and systems for HARQ protocols

#86
20170222761
2017-08-03

Methods and systems for HARQ protocols

#87
20170195158
2017-07-06

System and method for performing initial synchronization during wireless sector searches

#88
20170195095
2017-07-06

Methods and apparatus for transmitting modulation signals

#89
20170135052
2017-05-11

Clean-slate synchronization signal design and cell search algorithms

#90
20170126460
2017-05-04

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

#91
20170126459
2017-05-04

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

#92
20170118060
2017-04-27

Blind carrier synchronization method of OFDM wireless communication systems

#93
20170093606
2017-03-30

Radio communications system and method with increased transmission capacity

#94
20170078125
2017-03-16

Radio communication

#95
20170048091
2017-02-16

Frequency compensation techniques and systems

#96
20170048032
2017-02-16

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

#97
20170048030
2017-02-16

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

#98
20160359579
2016-12-08

Sampling frequency offset calculation

#99
20160323131
2016-11-03

Methods and apparatus for synchronization in multiple-channel communication systems

#100
20160278036
2016-09-22

Synchronization in the presence of large initial frequency error

#101
20160248605
2016-08-25

Transmission and reception apparatus and method

#102
20160226696
2016-08-04

Methods for frequency offset estimation with Zadoff-Chu sequences

#103
20160149742
2016-05-26

Multi-waveband OFDM receiver, and frequency offset compensation method and system

#104
20160149741
2016-05-26

Antenna direction adjustment method and OFDM reception device

#105
20160134457
2016-05-12

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

#106
20160119174
2016-04-28

Method and apparatus for identifying channel bandwidth and channel offset of an orthogonal frequency division multiplexing signal

#107
20160112235
2016-04-21

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

#108
20160099822
2016-04-07

Filterbank-based multicarrier transmitter for transmitting a multicarrier signal

#109
20160028577
2016-01-28

Reception of 2-subcarriers coherent orthogonal frequency division multiplexed signals

#110
20150358131
2015-12-10

Determining signal transmission bandwidth

#111
20150215142
2015-07-30

Radio receiver and frequency correcting method therefor

#112
20150215071
2015-07-30

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

#113
20150208369
2015-07-23

Method and apparatus for cell search and synchronization in mobile communication

#114
20150163029
2015-06-11

Method and signal generating apparatus for generating modulation signals

#115
20150146828
2015-05-28

Method of cancelling inter-subcarrier interference in distributed antenna system and apparatus for performing the same

#116
20150139219
2015-05-21

Method and apparatus for estimating frequency errors

#117
20150110228
2015-04-23

Synchronizing orthogonal frequency division multiplexed (OFDM) symbols in a receiver

#118
20150078764
2015-03-19

Frequency synchronization for an OFDM optical receiver

#119
20150063271
2015-03-05

Transmission apparatus and transmission method

#120
20150030108
2015-01-29

Frequency offset estimation method in OFDM system and OFDM receiver using the same

#121
20140348272
2014-11-27

Controllable frequency offset for inphase and quadrature (IQ) imbalance estimation

#122
20140334478
2014-11-13

Synchronization sequences and carrier type detection

#123
20140119485
2014-05-01

Apparatus and method for receiving dual band RF signals simultaneously

#124
20140112378
2014-04-24

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

#125
20140009685
2014-01-09

Reception device, reception method, program, and reception system

#126
20130315353
2013-11-28

Processing samples of a received RF signal

#127
20130315342
2013-11-28

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

#128
20130230129
2013-09-05

Method for coarse frequency synchronization in OFDM receiver

#129
20130230127
2013-09-05

Methods and apparatus for synchronization in multiple-channel communication systems

#130
20130223546
2013-08-29

Multi-carrier communication apparatus

#131
20130114453
2013-05-09

Method Applied to Receiver of Wireless Network for Frequency Offset and Associated Apparatus

#132
20130077463
2013-03-28

Carrier frequency acquisition method and apparatus

#133
20130034140
2013-02-07

Apparatus and method for estimating doppler spread in mobile communication system

#134
20130021977
2013-01-24

Method and apparatus for integer frequency offset estimation in wireless communication system

#135
20130003568
2013-01-03

Frequency offset estimation scheme in scheduled based wireless system

#136
20120288037
2012-11-15

COARSE BIN FREQUENCY SYNCHRONIZATION IN A COMMUNICATION SYSTEM

#137
20120257688
2012-10-11

Transmission and reception apparatus and method

#138
20120183101
2012-07-19

Method of receiving modulation symbols

#139
20120170629
2012-07-05

Controllable frequency offset for inphase and Quadrature (IQ) imbalance estimation

#140
20120163507
2012-06-28

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

#141
20120128052
2012-05-24

Carrier frequency acquisition method and apparatus having improved reliability for detecting carrier acquisition or loss thereof

#142
20120087449
2012-04-12

Methods and apparatus for synchronization in multiple-channel communication systems

#143
20120014467
2012-01-19

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

#144
20120011548
2012-01-12

Digital video broadcast service discovery

#145
20110261909
2011-10-27

Frequency offset estimation

#146
20110255864
2011-10-20

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

#147
20110235752
2011-09-29

Communication method and radio communication apparatus

#148
20110164671
2011-07-07

Receiver device, integrated circuit, receiving method, and receiving program

#149
20110110445
2011-05-12

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

#150
20110103523
2011-05-05

Single-burst acquisition for wireless communication system

#151
20110096814
2011-04-28

Methods for carrier frequency offset detection and compensation and transmitters and receivers utilizing the same

#152
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

#153
20110064175
2011-03-17

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

#154
20110041027
2011-02-17

Methods and systems for HARQ protocols

#155
20110038444
2011-02-17

Receiving apparatus and receiving method

#156
20110026649
2011-02-03

Technique for determining a frequency offset

#157
20110019782
2011-01-27

Signal processing apparatus and method

#158
20110013732
2011-01-20

Receiver and method

#159
20110013729
2011-01-20

Signal processing apparatus, signal processing method, and reception system

#160
20110007854
2011-01-13

INTEGER CARRIER FREQUENCY OFFSET ESTIMATION SCHEME FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING

#161
20110002422
2011-01-06

Apparatus for detecting digital video signal parameters and method thereof

#162
20100309972
2010-12-09

Receiving apparatus, receiving method and program, and receiving system

#163
20100260233
2010-10-14

Phase tracking in frequency domain in a wireless communication system

#164
20100246698
2010-09-30

Synchronization method and apparatus for orthogonal frequency division multiplexing system

#165
20100232552
2010-09-16

Synchronization and acquisition for mobile television reception

#166
20100215119
2010-08-26

Processor and processing method for signal transmission

#167
20100202546
2010-08-12

CARRIER FREQUENCY OFFSET ESTIMATION FOR MULTICARRIER COMMUNICATION SYSTEMS

#168
20100158079
2010-06-24

ID-cell index search algorithm and carrier frequency offset estimation

#169
20100128758
2010-05-27

Transmission method, transmission apparatus, and reception apparatus

#170
20100118990
2010-05-13

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

#171
20100046685
2010-02-25

Method and system for reducing power consumption of signal synchronization

#172
20100040043
2010-02-18

Systems and methods for performing initial synchronization in wireless communications systems

#173
20090323837
2009-12-31

Method for estimating frequency offset in system utilizing a plurality of sub-carriers

#174
20090323834
2009-12-31

Multi-carrier communication apparatus

#175
20090323512
2009-12-31

Combined OFDMA preamble index identification, integer frequency offset estimation, and preamble CINR measurement

#176
20090323511
2009-12-31

Combined OFDMA preamble index identification, integer frequency offset estimation, and preamble CINR measurement

#177
20090290663
2009-11-26

Coarse frequency offset estimation for digital multimedia broadcasting

#178
20090268850
2009-10-29

Coarse frequency offset estimation in ISDB receivers

#179
20090252026
2009-10-08

Timing and frequency acquisition for mediaflo systems

#180
20090225822
2009-09-10

System and methods for receiving OFDM symbols having timing and frequency offsets

#181
20090220015
2009-09-03

Coarse carrier frequency offset estimation for CMMB mobile TV receiver

#182
20090196383
2009-08-06

Correlation apparatus and method for frequency synchronization in broadband wireless access communication system

#183
20090185646
2009-07-23

Estimating frequency shift

#184
20090175394
2009-07-09

Methods and apparatus for synchronization and detection in wireless communication systems

#185
20090154627
2009-06-18

Methods and apparatus for identifying a preamble sequence and for estimating an integer carrier frequency offset

#186
20090147873
2009-06-11

Robust integer carrier frequency offset estimator

#187
20090141836
2009-06-04

Reception device

#188
20090135977
2009-05-28

Device for and method of signal synchronization in a communication system

#189
20090103651
2009-04-23

Digital video broadcast service discovery

#190
20090097597
2009-04-16

Methods For Coarse Frequency Offset Estimation For Orthogonal Frequency Division Multiplexing Schemes

#191
20090086841
2009-04-02

Platform noise mitigation

#192
20090067517
2009-03-12

Preamble sequence detection and integral carrier frequency offset estimation method for OFDM/OFDMA wireless communication system

#193
20090060101
2009-03-05

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

#194
20090041161
2009-02-12

DC offset estimation system and method

#195
20080298485
2008-12-04

Apparatus and method for determining positions of pilot sub-carriers in an OFDM symbol

#196
20080291893
2008-11-27

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

#197
20080260085
2008-10-23

Method and device for estimating integer carrier frequency offset

#198
20080232513
2008-09-25

Apparatus and method for preamble detection and integer carrier frequency offset estimation

#199
20080186949
2008-08-07

Preamble design for synchronization and cell search

#200
20080186948
2008-08-07

Method and device for frame synchronization and coarse frequency offset estimation (CFE)

#201
20080137768
2008-06-12

Apparatus and method of compensating for frequency offset in OFDMA system

#202
20080137563
2008-06-12

Automatic frequency offset compensation in a TDD wireless OFDM communication system

#203
20080095249
2008-04-24

Apparatus and method for estimating coarse carrier frequency offset for frequency synchronization in OFDM receiver

#204
20080075212
2008-03-27

Method of initial synchronization of a communication signal

#205
20080043882
2008-02-21

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

#206
20080002794
2008-01-03

Single-burst acquistion for wireless communication system

#207
20070280098
2007-12-06

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

#208
20070206692
2007-09-06

Method and apparatus for detecting offset in an orthogonal frequency division multiplexing system

#209
20070165733
2007-07-19

Transmission of a plurality of sub-carriers in an OFDM signal

#210
20070160158
2007-07-12

OFDMA device and method of correcting frequency offset in OFDMA signals

#211
20070140323
2007-06-21

Coarse bin frequency synchronization in a communication system

#212
20070133699
2007-06-14

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

#213
20070133391
2007-06-14

Apparatus and method for carrier frequency synchronization in an OFDM system

#214
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

#215
20070071123
2007-03-29

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

#216
20070047671
2007-03-01

Frequency tracking and channel estimation in orthogonal frequency division multiplexing systems

#217
20060271611
2006-11-30

Frequency syncrhonization apparatus and method for OFDM system

#218
20060239370
2006-10-26

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

#219
20060233288
2006-10-19

Method and apparatus for coarse and fine frequency and timing synchronisation

#220
20060215778
2006-09-28

Automatic frequency control for a wireless communication system with multiple subcarriers

#221
20060193392
2006-08-31

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

#222
20060159205
2006-07-20

Device and method for determining a correlation value

#223
20060159188
2006-07-20

Wireless communication apparatus and wireless communication method

#224
20060153317
2006-07-13

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

#225
20060140293
2006-06-29

Method for detecting signal and estimating symbol timing

#226
20060133527
2006-06-22

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

#227
20060132662
2006-06-22

Apparatus for synchronization acquisition in digital receiver and method thereof

#228
20060120487
2006-06-08

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

#229
20060104257
2006-05-18

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

#230
20060062317
2006-03-23

Apparatus and method for frequency synchronization in OFDM system

#231
20060062316
2006-03-23

Frequency recovery apparatus and method for use in digital broadcast receiver

#232
20050213678
2005-09-29

Tracking system comprised in an OFDM receiver

#233
20050175114
2005-08-11

Wide frequency offset correction using encoded interburst phase differences

#234
20050169408
2005-08-04

Coarse frequency synchronization method and apparatus in an orthogonal frequency division multiplexing (OFDM) system

#235
20050147026
2005-07-07

Synchronization in OFDM systems

#236
20050084023
2005-04-21

Method for the frequency and time synchronization of an odm receiver

#237
20050036564
2005-02-17

Method for processing an OFDM signal

#238
20050025264
2005-02-03

Device and method of estimating frequency offset in radio receiver

#239
15638716
2019-10-15

System and device for evened frequency emission impact distribution using SIS channel sequencing by time-slotted transitions

#240
14876246
2017-01-03

Method and apparatus for residual phase noise compensation

#241
14747510
2016-08-02

Carrier frequency synchronization of data

#242
14744833
2017-01-24

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

#243
14734573
2016-08-16

Adaptive OFDM synchronization method using quadratic search step sizes

#244
14721313
2016-06-14

Low-complexity non-data-aided estimation of symbol time offset in OFDM systems

#245
14281012
2016-05-31

Frequency offset acquisition for wireless communications

#246
14143722
2015-01-06

Channel estimator for updating channel estimates and carrier frequency offsets

#247
14091048
2015-07-14

Non-data-aided joint time and frequency offset estimation method for OFDM systems using channel order based regression

#248
12540758
2014-08-12

Phase based preamble detection