Patents-Review.com
ClassID:

226016 ⎘

H04L27/2637 - CPC Classification

Classification description:

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

Recent Application in this class:
#1
20250106088
2025-03-27

SIGNAL GENERATION METHOD AND APPARATUS

 #2
20250016036
2025-01-09

EXTENDED RANGE PHYSICAL LAYER PROTOCOL DATA UNIT (PPDU)

 #3
20240422044
2024-12-19

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

 #4
20240388822
2024-11-21

GATEWAY APPARATUS AND METHODS FOR WIRELESS IoT (INTERNET OF THINGS) SERVICES

 #5
20240369676
2024-11-07

METHOD OF AND ELECTRONIC DEVICE FOR TRACKING VEHICLE BY USING EXTENDED KALMAN FILTER BASED ON CORRECTION FACTOR

 #6
20240284082
2024-08-22

APPARATUS AND METHODS FOR INTEGRATED HIGH-CAPACITY DATA AND WIRELESS IoT (INTERNET OF THINGS) SERVICES

 #7
20240098393
2024-03-21

APPARATUS AND METHODS FOR COORDINATED DELIVERY OF MULTIPLE DATA CHANNELS OVER PHYSICAL MEDIUM

 #8
20230396903
2023-12-07

APPARATUS AND METHODS FOR ENABLING MOBILITY OF A USER DEVICE IN AN ENHANCED WIRELESS NETWORK

 #9
20230379608
2023-11-23

APPARATUS AND METHODS FOR INTEGRATED HIGH-CAPACITY DATA AND WIRELESS NETWORK SERVICES

 #10
20230224204
2023-07-13

Signal generation method and apparatus

 #11
20230050403
2023-02-16

Apparatus and methods for enhancing quality of experience for data services over high-capacity wireless networks

 #12
20220182742
2022-06-09

Gateway apparatus and methods for wireless IoT (internet of things) services

 #13
20220046343
2022-02-10

Apparatus and methods for integrated high-capacity data and wireless IoT (internet of things) services

 #14
20210336834
2021-10-28

Repetition on subcarriers for noncoherent modulation

 #15
20210336833
2021-10-28

REPETITION ON SUBCARRIERS FOR NONCOHERENT MODULATION

 #16
20210328848
2021-10-21

Transmissions using discrete spectra

 #17
20210289275
2021-09-16

Apparatus and methods for coordinated delivery of multiple data channels over physical medium

 #18
20210281456
2021-09-09

Spectral efficiency for tone reservation peak-to-average power ratio reduction

 #19
20210203535
2021-07-01

Method and apparatus using cell-specific and common pilot subcarriers in multi-carrier, multi-cell wireless communication networks

 #20
20210168476
2021-06-03

Apparatus and methods for enhancing quality of experience for data services over high-capacity wireless networks

 #21
20210099331
2021-04-01

Communication node and method for generating multicarrier signals by backscattering

 #22
20210083815
2021-03-18

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #23
20200412593
2020-12-31

OFDM transmission method and device in wireless LAN system

 #24
20200403838
2020-12-24

Method and apparatus using cell-specific and common pilot subcarriers in multi-carrier, multi cell wireless communication networks

 #25
20200259606
2020-08-13

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #26
20200153523
2020-05-14

Frequency selective system

 #27
20200136876
2020-04-30

METHOD AND APPARATUS USING CELL-SPECIFIC AND COMMON PILOT SUBCARRIERS IN MULTI-CARRIER, MULTI-CELL WIRELESS COMMUNICATION NETWORKS

 #28
20200127756
2020-04-23

Radio transmission device and transmission method

 #29
20200052949
2020-02-13

System and method for generalized multi-carrier frequency division multiplexing

 #30
20190349848
2019-11-14

Gateway apparatus and methods for wireless IoT (Internet of Things) services

 #31
20190320494
2019-10-17

Apparatus and methods for enabling mobility of a user device in an enhanced wireless network

 #32
20190320322
2019-10-17

Apparatus and methods for integrated high-capacity data and wireless network services

 #33
20190320250
2019-10-17

Apparatus and methods for integrated high-capacity data and wireless IoT (internet of things) services

 #34
20190319858
2019-10-17

Apparatus and methods for enhancing quality of experience for over-the-top data services over high-capacity wireless networks

 #35
20190319814
2019-10-17

Apparatus and methods for coordinated delivery of multiple data channels over physical medium

 #36
20190312766
2019-10-10

Signal generation for OFDM-based systems

 #37
20190238200
2019-08-01

Transmission apparatus, transmission method, reception apparatus, and reception method

 #38
20190229823
2019-07-25

Frequency selective system

 #39
20190132178
2019-05-02

Combining signal streams using frequency components

 #40
20190132095
2019-05-02

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #41
20190075004
2019-03-07

Orthogonal differential vector signaling codes with embedded clock

 #42
20190028316
2019-01-24

Method of simultaneously performing packet detection, symbol timing acquisition, and carrier frequency offset estimation using multiple correlation detection, and bluetooth apparatus using same

 #43
20180323892
2018-11-08

Radio single symbol design via frequency division multiplexing of reference signals and data tones

 #44
20180309609
2018-10-25

System and method for generalized multi-carrier frequency division multiplexing

 #45
20180294880
2018-10-11

System and method for coherent detection with digital signal procession

 #46
20180219714
2018-08-02

Orthogonal frequency division multiple access (OFDMA) structures for high efficiency wireless communications

 #47
20180198587
2018-07-12

Method and apparatus for transmitting a reference signal in a multi-antenna system

 #48
20180198576
2018-07-12

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #49
20180167251
2018-06-14

Differential randomization of cell-specific and common pilot subcarriers in multi-carrier, multi-cell wireless communication networks

 #50
20180145860
2018-05-24

OFDM transmission method and device in wireless LAN system

 #51
20180123663
2018-05-03

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #52
20180091351
2018-03-29

Orthogonal differential vector signaling codes with embedded clock

 #53
20180076996
2018-03-15

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #54
20180048502
2018-02-15

Receiving spread spectrum signals

 #55
20180048368
2018-02-15

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #56
20170317774
2017-11-02

PLL for carrier generator and method of generating carrier signals

 #57
20170288771
2017-10-05

Apparatus and method for measuring frequency response characteristics of optical transmitter and optical receiver

 #58
20170264477
2017-09-14

Method and apparatus for I-Q decoupled OFDM modulation and demodulation

 #59
20170180177
2017-06-22

Interleaver design for dual sub-carrier modulation in WLAN

 #60
20170163377
2017-06-08

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #61
20170134132
2017-05-11

Method and apparatus for transmitting a reference signal in a multi-antenna system

 #62
20170117994
2017-04-27

Modulation and multiple access technique using orbital angular momentum

 #63
20170111200
2017-04-20

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

 #64
20170093461
2017-03-30

Power line communication methods and devices

 #65
20170078127
2017-03-16

Communication system and method for achieving low peak-to-average power ratio

 #66
20170026217
2017-01-26

Orthogonal differential vector signaling codes with embedded clock

 #67
20160380797
2016-12-29

Apparatus, method, and computer program for communicating one or more symbols with multiple pilot signals and nulls

 #68
20160330001
2016-11-10

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #69
20160323864
2016-11-03

Interference randomization of control channel elements

 #70
20160323130
2016-11-03

Apparatus, computer readable medium, and method for an interleaver for higher quadrature amplitude modulation (QAM) in a high efficiency wireless local-area network

 #71
20160248565
2016-08-25

Method of transmitting pilot bits in a wireless communication system

 #72
20160234053
2016-08-11

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #73
20160234051
2016-08-11

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #74
20160198472
2016-07-07

Transmit End, Receive End, and Method for Coexistence of Single Carrier System and Multicarrier System

 #75
20160173314
2016-06-16

Orthogonal frequency division multiplexing polar transmitter

 #76
20160173181
2016-06-16

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals method for receiving broadcast signals

 #77
20160164648
2016-06-09

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #78
20160156496
2016-06-02

OFDM transmission method and device in wireless LAN system

 #79
20160112235
2016-04-21

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

 #80
20160105223
2016-04-14

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #81
20160105222
2016-04-14

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #82
20160100386
2016-04-07

Method and apparatus for transmitting a reference signal in a multi-antenna system

 #83
20160050048
2016-02-18

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #84
20160043795
2016-02-11

Method and apparatus for implementing signal quality metrics and antenna diversity switching control

 #85
20160036616
2016-02-04

Orthogonal differential vector signaling codes with embedded clock

 #86
20160028579
2016-01-28

In-phase and quadrature radio frequency digital-to-analog converter

 #87
20150359006
2015-12-10

Random access channel for OFDM-MIMO system

 #88
20150349997
2015-12-03

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

 #89
20150319025
2015-11-05

Radio communication method and a base station and user terminal thereof

 #90
20150312077
2015-10-29

Orthogonal frequency division multiple access (OFDMA) structures for high efficiency wireless communications

 #91
20150312076
2015-10-29

Method and apparatus using cell-specific and common pilot subcarriers in multi-carrier, multi-cell wireless communication networks

 #92
20150312075
2015-10-29

Interference randomization of control channel elements

 #93
20150304075
2015-10-22

Time-domain mechanism for computing error vector magnitude of OFDM signals

 #94
20150295745
2015-10-15

Frequency interleaving and de-interleaving for OFDM modulation

 #95
20150229505
2015-08-13

Uplink multiuser carrier frequency offset (CFO) estimation in wireless communications

 #96
20150200798
2015-07-16

Method of transmitting pilot bits in a wireless communication system

 #97
20150146809
2015-05-28

NC-OFDM FOR A COGNITIVE RADIO

 #98
20150146804
2015-05-28

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast, signals, method for transmitting broadcast signals and method for receiving broadcast signals

 #99
20150043513
2015-02-12

Method and apparatus for transmitting a reference signal in a multi-antenna system

 #100
20150030101
2015-01-29

METHOD AND APPARATUS FOR GENERATING A PHY HEADER FIELD

 #101
20140341322
2014-11-20

Radio frequency digital to analog converter

 #102
20140293987
2014-10-02

System and method for generalized multi-carrier frequency division multiplexing

 #103
20140269976
2014-09-18

Radio frequency digital to analog converter

 #104
20140056262
2014-02-27

Radio communication method and a base station and user terminal thereof

 #105
20130162401
2013-06-27

APPARATUS AND METHOD FOR TRANSMITTING TAG DATA

 #106
20130121706
2013-05-16

Signal transmission and reception device and method

 #107
20130094490
2013-04-18

WIRELESS COMMUNICATION APPARATUS

 #108
20120281684
2012-11-08

Radio communication method and a base station and user terminal thereof

 #109
20120251098
2012-10-04

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

 #110
20120250655
2012-10-04

Method and apparatus for transmitting a reference signal in a multi-antenna system

 #111
20120243647
2012-09-27

Synchronous detection method and device

 #112
20120230694
2012-09-13

Optical transmitter

 #113
20120219296
2012-08-30

Methods and systems for coherent multi-subcarrier source generation

 #114
20120207234
2012-08-16

Method for transmitting digital data, and transmitter base implementing such a method

 #115
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

 #116
20120147837
2012-06-14

Radio communication method and a base station and user terminal thereof

 #117
20120122445
2012-05-17

Method and apparatus for reducing mutual interference of multi-carrier

 #118
20120044975
2012-02-23

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

 #119
20120039410
2012-02-16

QAM and GMSK modulation methods

 #120
20110310940
2011-12-22

Random access channel for OFDM-MIMO system

 #121
20110299474
2011-12-08

Method, apparatus, and system for mitigating pilot signal degradation by employing cell-specific pilot subcarrier and common pilot subcarrier techniques in a multi-carrier cellular network

 #122
20110274194
2011-11-10

QAM and GMSK systems

 #123
20110249709
2011-10-13

DHT-Based OFDM Transmitter and Receiver

 #124
20110170690
2011-07-14

Secure orthogonal frequency multiplexed optical communications

 #125
20110150051
2011-06-23

Multi-tone system with oversampled precoders

 #126
20110142148
2011-06-16

Orthogonal Frequency Division Multiplex Transmission Method

 #127
20110129007
2011-06-02

Power line communication methods and devices

 #128
20110116555
2011-05-19

Power line communication methods and devices

 #129
20110110408
2011-05-12

Power line communication methods and devices

 #130
20110103507
2011-05-05

System and method for combined predistortion and interference cancellation in a satellite communications system

 #131
20110096854
2011-04-28

Communications system utilizing orthogonal linear frequency modulated waveforms

 #132
20110080974
2011-04-07

Radio transmitter apparatus

 #133
20110051786
2011-03-03

Power line communication methods and devices

 #134
20110038435
2011-02-17

Method and system for reducing out of band radiation in orthogonal frequency division multiplexing systems

 #135
20100310004
2010-12-09

Methods and apparatus for amplifying and transmitting signals

 #136
20100290551
2010-11-18

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

 #137
20100232379
2010-09-16

Interference randomization of control channel elements

 #138
20100215031
2010-08-26

Method of transmitting pilot bits in a wireless communication system

 #139
20100202775
2010-08-12

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

 #140
20100195764
2010-08-05

OFDM TRANSMISSION APPARATUS, OFDM RECEIVING APPARATUS AND INTERLEAVING METHOD

 #141
20100189132
2010-07-29

Method and apparatus for multi-carrier frequency division multiplexing transmission

 #142
20100178057
2010-07-15

Signal method and apparatus

 #143
20100172395
2010-07-08

Multi-carrier transmitter design on adjacent carriers in a single frequency band on the uplink in W-CDMA/HSPA

 #144
20100142598
2010-06-10

Wireless frequency-domain multi-channel communications

 #145
20100128813
2010-05-27

Multi-channel signaling with equalization

 #146
20100121617
2010-05-13

Concept for realistic simulation of a frequency spectrum

 #147
20100067365
2010-03-18

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

 #148
20100054357
2010-03-04

Radio communication system

 #149
20100020898
2010-01-28

Adjustable dual-band link

 #150
20090252112
2009-10-08

Radio communication method and a base station and user terminal thereof

 #151
20090238305
2009-09-24

METHOD, APPARATUS AND SYSTEM FOR HIGH-SPEED TRANSMISSION

 #152
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

 #153
20090161778
2009-06-25

Transmitter and carrier leak detection method

 #154
20090154584
2009-06-18

Apparatus and method for communication in variable bands

 #155
20090141829
2009-06-04

Methods and systems for transmission of multiple modulated signals over wireless networks

 #156
20090110123
2009-04-30

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

 #157
20090110033
2009-04-30

Multicarrier sub-layer for direct sequence channel and multiple-access coding

 #158
20090067537
2009-03-12

Adjustable dual-band link

 #159
20090040953
2009-02-12

Radio communication system carrying out transmission and reception of multicarrier signal, transmission terminal, and reception terminal

 #160
20080310529
2008-12-18

Radio transmitting apparatus and radio receiving apparatus

 #161
20080291974
2008-11-27

Signal Transmitter for Wideband Wireless Communication

 #162
20080260010
2008-10-23

Power line communication methods and devices

 #163
20080219385
2008-09-11

Methods and systems for transmission of multiple modulated signals over wireless networks

 #164
20080219362
2008-09-11

Diversity wireless systems

 #165
20080212656
2008-09-04

Equalized modulation demodulation (modem) format selectable multi antenna system

 #166
20080170641
2008-07-17

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

 #167
20080137783
2008-06-12

Adjustable dual-band link

 #168
20080100387
2008-05-01

Multiple frequency generator for quadrature amplitude modulated communications

 #169
20080063401
2008-03-13

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

 #170
20080056399
2008-03-06

GMSK and OFDM nonlinearly and linearly amplified cellular and wireless networks

 #171
20080031310
2008-02-07

Cross-correlated TDMA, spread spectrum, CDMA and OFDM systems

 #172
20080013639
2008-01-17

Multi-carrier transmitter for wireless communication

 #173
20070286301
2007-12-13

Modulation apparatus, modulation method, and demodulation apparatus

 #174
20070280372
2007-12-06

Fully saturated multi-tone transceiver

 #175
20070263579
2007-11-15

Random access channel for OFDM-MIMO system

 #176
20070230388
2007-10-04

Methods and apparatus using cell-specific and common pilot subcarriers in multi-carrier, multi-cell wireless communication networks

 #177
20070211786
2007-09-13

Multicarrier sub-layer for direct sequence channel and multiple-access coding

 #178
20070183310
2007-08-09

Orthogonal frequency division multiplex transmission method

 #179
20070183309
2007-08-09

Transmission delay utilizing orthogonal frequency division multiplex transmission method

 #180
20070183308
2007-08-09

OFDM Multiple Sub-Channel Communication System

 #181
20070183304
2007-08-09

Apparatus and method for digitally implementing a wideband multicarrier

 #182
20070092263
2007-04-26

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

 #183
20070064773
2007-03-22

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

 #184
20070053472
2007-03-08

Receivers and demodulators for TDMA and other modulated systems

 #185
20070053471
2007-03-08

Antenna systems, receivers and demodulators for cross-correlated and other signals

 #186
20070047968
2007-03-01

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

 #187
20070036203
2007-02-15

Processor, modulators and transceivers for spread spectrum, CDMA, CSMA, OFDM, TDM, TDMA cross correlated and filtered systems

 #188
20060274838
2006-12-07

Agile RF band OFDM spread spectrum and cross-correlated systems

 #189
20060227851
2006-10-12

Multiple access method and system

 #190
20060146913
2006-07-06

TDMA, spread spectrum RF agile filtered signal transmission

 #191
20060133538
2006-06-22

Adjustable dual-band link

 #192
20060133523
2006-06-22

Multi-tone system with oversampled precoders

 #193
20060120469
2006-06-08

Multiple antenna multicarrier transmitter and method for adaptive beamforming with transmit-power normalization

 #194
20060105715
2006-05-18

Radio communication apparatus

 #195
20060088125
2006-04-27

Multicarrier receiver and transmitter with delay correcting function

 #196
20060088121
2006-04-27

Clock modulation systems

 #197
20060083320
2006-04-20

Demodulation of multiple signals

 #198
20060073805
2006-04-06

Dynamic FD coexistence method for PLC systems

 #199
20060018344
2006-01-26

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

 #200
20050232182
2005-10-20

Frequency-shifted feedback cavity used as a phased array antenna controller and carrier interference multiple access spread-spectrum transmitter

 #201
20050223306
2005-10-06

Communications apparatus, systems, and methods

 #202
20050220201
2005-10-06

Methods and apparatus for determining minimum cyclic prefix durations

 #203
20050185699
2005-08-25

Spread spectrum, cross-correlated and filtered modulated systems

 #204
20050175116
2005-08-11

OFDM, CDMA, spread spectrum, TDMA, cross-correlated and filtered modulation

 #205
20050169395
2005-08-04

Cost-effective multi-channel quadrature amplitude modulation

 #206
20050135312
2005-06-23

Apparatus and method for prioritized apportionment of transmission power in a multi-carrier terminal

 #207
20050068887
2005-03-31

High speed modulation of optical subcarriers

 #208
20050009477
2005-01-13

System and method for an upconverter for stacked intermediate frequency carriers

 #209
14826799
2016-08-16

Low power wireless communication utilizing OFDM backchannels

 #210
14719602
2017-04-18

Method and system for reducing PRACH interference

 #211
14664601
2015-12-15

Data stream interleaving with different rotation applied to changed bit streams for spatially diverse transmission

 #212
14316112
2015-11-10

In-phase and quadrature radio frequency digital-to-analog converter

 #213
14077824
2015-06-23

Cross-band broadcasting