ClassID:

224476

H04J13/0022 - CPC Classification

Classification description:

Code division multiplex systems; Code type PN, e.g. Kronecker

Sub-classes:
Recent Application in this class:
#1
20250310170
2025-10-02

SYSTEM DISCOVERY AND SIGNALING

#2
20250202612
2025-06-19

METHOD AND COMPUTER-READABLE MEDIUM FOR A CORRELATOR USING AN N-DIMENSIONAL ACCUMULATOR TO TEST 2N ALIGNMENTS

#3
20240422048
2024-12-19

SYSTEM DISCOVERY AND SIGNALING

#4
20230269123
2023-08-24

System discovery and signaling

#5
20230009403
2023-01-12

METHOD FOR ANTENNA CALIBRATION AND ACTIVE ANTENNA SYSTEM FOR USE IN ANTENNA CALIBRATION

#6
20220239399
2022-07-28

Sequence transmission for sidelink communications in telecommunication services

#7
20220038200
2022-02-03

Scrambling initialisation in a communications system

#8
20220006579
2022-01-06

User equipment, base station, and method for modifying demodulation reference signal (DMRS) sequences

#9
20220006536
2022-01-06

Method for antenna calibration and active antenna system for use in antenna calibration

#10
20210329552
2021-10-21

Method and apparatus for transmitting and receiving signal, storage medium and electronic apparatus

#11
20210258925
2021-08-19

Downlink control channel detection method, terminal, and network side device

#12
20210258199
2021-08-19

System discovery and signaling

#13
20210153120
2021-05-20

Wake-up signal

#14
20200389246
2020-12-10

Sequence transmission for sidelink communications

#15
20190326948
2019-10-24

Apparatus and receiver for performing synchronization in analog spread spectrum systems

#16
20190281656
2019-09-12

INFORMATION INDICATION METHOD, INFORMATION RECEIVING METHOD, AND APPARATUS

#17
20190222996
2019-07-18

Method of environmental sensing through pilot signals in a spread spectrum wireless communication system

#18
20190158339
2019-05-23

Reference signal for pi/2 binary phase shift keying (BPSK) modulation

#19
20190116079
2019-04-18

System discovery and signaling

#20
20190044761
2019-02-07

Initialization of pseudo noise sequences for reference signals and data scrambling

#21
20190020387
2019-01-17

Method and apparatus for determining precoding matrix indicator, user equipment, and base station

#22
20180323897
2018-11-08

Scrambling initialisation in a communications system

#23
20180309476
2018-10-25

Orthogonal spreading sequence creation using radio frequency parameters

#24
20180294836
2018-10-11

Sequence generation for spread spectrum from signal sampling

#25
20180097551
2018-04-05

Method and apparatus for determining precoding matrix indicator, user equipment, and base station

#26
20170366220
2017-12-21

Spreading sequence system for full connectivity relay network

#27
20170310523
2017-10-26

System discovery and signaling

#28
20170219689
2017-08-03

Radar interference mitigation method and apparatus

#29
20170195078
2017-07-06

Communication receiving apparatus, signal receiving method thereof for recovering data and signal transmitting method for generating transmitting signal based on CDMA technology

#30
20170195021
2017-07-06

Method and apparatus for determining precoding matrix indicator, user equipment, and base station

#31
20170097421
2017-04-06

Systems and methods for generating signals from terrestrial transmitters, and for processing the signals using GNSS receiver hardware

#32
20170070260
2017-03-09

Systems and Methods for Parallel Signal Cancellation

#33
20170063480
2017-03-02

Use of orthogonal or near orthogonal codes in reverse link

#34
20160366630
2016-12-15

Method and apparatus for allowing soft handoff of a CDMA reverse link utilizing an orthogonal channel structure

#35
20160323056
2016-11-03

Method and device for transmitting preamble sequence

#36
20160269980
2016-09-15

System discovery and signaling

#37
20160261359
2016-09-08

Method and system for selecting spreading sequences with variable spreading factors

#38
20160218821
2016-07-28

Narrowband machine-to-machine cell search

#39
20160072546
2016-03-10

Spread spectrum GMSK signals

#40
20160065323
2016-03-03

Coded imaging and multi-user communications systems

#41
20160049974
2016-02-18

Systems and methods for parallel signal cancellation

#42
20140177594
2014-06-26

Method and apparatus for allowing soft handoff of a CDMA reverse link utilizing an orthogonal channel structure

#43
20140071927
2014-03-13

Enhanced access channel masks for xHRPD

#44
20130187010
2013-07-25

Track circuit apparatus for train

#45
20120320901
2012-12-20

Use of orthogonal or near orthogonal codes in reverse link

#46
20120281736
2012-11-08

Signals, system, method and apparatus

#47
20120128096
2012-05-24

Method and device for generating scrambling code

#48
20120106498
2012-05-03

Mobile communication system, base station, higher-order apparatus, communication method, and program

#49
20120076157
2012-03-29

Enhanced access channel masks for xHRPD

#50
20110170467
2011-07-14

Method and apparatus for allowing soft handoff of a CDMA reverse link utilizing an orthogonal channel structure

#51
20110140858
2011-06-16

METHODS AND APPARATUS FOR RFID TAG COMMUNICATIONS

#52
20110122926
2011-05-26

Apparatus and method for generating pseudo noise code

#53
20110096767
2011-04-28

Systems and methods for parallel signal cancellation

#54
20110080844
2011-04-07

Adaptative Multi-Carrier Code Division Multiple Access

#55
20110069796
2011-03-24

Advanced Signal Processors for Interference Suppression in Baseband Receivers

#56
20110038440
2011-02-17

Process for Receiving a Signal and a Receiver

#57
20100329402
2010-12-30

Advanced signal processors for interference cancellation in baseband receivers

#58
20100316039
2010-12-16

APPARATUS AND METHOD FOR GENERATING RANGING CODE

#59
20100216459
2010-08-26

Cell search device of cellular system using OFDMA scheme and method thereof

#60
20100208708
2010-08-19

System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system

#61
20100142490
2010-06-10

Method and apparatus for pilot multiplexing in a wireless communication system

#62
20100127831
2010-05-27

Active RFID apparatus for improving PN code generation

#63
20100067551
2010-03-18

Method for providing packet framing in a communication system

#64
20100054225
2010-03-04

Chaotic spreading codes and their generation

#65
20090279592
2009-11-12

Signals, system, method and apparatus

#66
20090274164
2009-11-05

Random phase multiple access communication interface system and method

#67
20090238245
2009-09-24

Despreading spread spectrum data

#68
20090238210
2009-09-24

Slotted mode acquisition

#69
20090238202
2009-09-24

Random phase multiple access system with meshing

#70
20090238201
2009-09-24

Uplink transmitter in a random phase multiple access communication system

#71
20090213905
2009-08-27

Use of orthogonal or near orthogonal codes in reverse link

#72
20090175258
2009-07-09

Method and device of generating time-varying preamble sequence and pseudorandom noise (PN) binary sequence in direct sequence spread spectrum (DSSS) communications

#73
20090103460
2009-04-23

Method for transmitting signal and method for receiving signal

#74
20090074039
2009-03-19

GMSK spread modulation receiver

#75
20080298439
2008-12-04

Device and Method for Processing Data by Modulating Sets of Spreading Pseudocodes as a Function of Data Destination Cells for a Multi-Beam Communication Satellite

#76
20080225968
2008-09-18

METHOD AND APPARATUS FOR MIMO CHANNEL ESTIMATION USING TDS-OFDM IN DOWNLINK TRANSMISSION IN THE FREQUENCY DOMAIN

#77
20080225694
2008-09-18

METHOD AND APPARATUS FOR ID IDENTIFICATION USING PN FOR TDS-OFDM IN TRANSMISSION

#78
20080180253
2008-07-31

RFID Communication System and Method of Operation

#79
20080170632
2008-07-17

Apparatus and method for generating ranging pseudo noise code

#80
20080063032
2008-03-13

Codebook indexing to achieve high bit densities in a direct-sequence CDMA spread spectrum communication system

#81
20080045158
2008-02-21

Method And System For Transmitting A Beacon Signal In A Wireless Network

#82
20080008081
2008-01-10

Adaptative multi-carrier code division multiple access

#83
20070291861
2007-12-20

Apparatus and method for generating ranging pseudo noise code

#84
20070291821
2007-12-20

Matched filter for scalable spread spectrum communications systems

#85
20070290810
2007-12-20

Backscatter interrogators, communication systems and backscatter communication methods

#86
20070290809
2007-12-20

Backscatter interrogators, communication systems and backscatter communication methods

#87
20070290808
2007-12-20

Backscatter interrogators, communication systems and backscatter communication methods

#88
20070274267
2007-11-29

Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system

#89
20070223567
2007-09-27

Preamble for synchronization

#90
20070195906
2007-08-23

Method and apparatus for pilot multiplexing in a wireless communication system

#91
20070168406
2007-07-19

Complementary linear feedback shift registers for generating advance timing masks

#92
20070160118
2007-07-12

Pilot scrambling in communications systems

#93
20070153877
2007-07-05

Ultra-wideband high data-rate communication apparatus and methods

#94
20070140324
2007-06-21

Apparatus for FPGA Programming to synchronize with CDMA signals

#95
20070121706
2007-05-31

BASE STATION APPARATUS OF MOBILE COMMUNICATION SYSTEM

#96
20070111680
2007-05-17

Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system

#97
20070110141
2007-05-17

Method for receiving spectrum spreading signals with frequency shift correction

#98
20070104258
2007-05-10

Wireless transmitter and receiver for use in an ultra-wideband direct spread pulse communication system

#99
20070098054
2007-05-03

Pseudo-random number sequence filter, filtering method and data recording medium

#100
20070086510
2007-04-19

Parallel architecture digital filter and spread spectrum signal receiver using such a filter

#101
20070071069
2007-03-29

GMSK spread modulation

#102
20070025426
2007-02-01

Digital broadcast system controllable by multiple users and method for controlling the same

#103
20070008876
2007-01-11

Method for preventing reporting of duplicate pilots within a communication system

#104
20060280228
2006-12-14

Data transmission using repeated sets of spreading sequences

#105
20060274863
2006-12-07

Method and device for determining the occupancy of a transmission channel

#106
20060262756
2006-11-23

Method and apparatus for providing variable rate data in a communications system using non-orthogonal overflow channels

#107
20060256838
2006-11-16

Composite code-division/time-division multiplex system

#108
20060251151
2006-11-09

Base station apparatus of mobile communication system

#109
20060245481
2006-11-02

Matched filter for scalable spread spectrum communications systems

#110
20060245480
2006-11-02

Fast initial acquisition & search device for a spread spectrum communication system

#111
20060245474
2006-11-02

Multimode receiver

#112
20060242216
2006-10-26

METHOD AND AN ELECTRICAL DEVICE FOR EFFICIENT GENERATION OF MULTI-RATE PSEUDO RANDOM NOISE (PN) SEQUENCE

#113
20060227908
2006-10-12

Advanced signal processors for interference cancellation in baseband receivers

#114
20060140157
2006-06-29

Method for allowing multi-user orthogonal and non-orthogonal interoperability of code channels

#115
20060133459
2006-06-22

Method for receiving spectrum spreading signals with frequency shift correction

#116
20060121897
2006-06-08

Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system

#117
20060088134
2006-04-27

System and method for generating signal waveforms in a CDMA cellular telephone system

#118
20060078043
2006-04-13

Receiver for a CDMA system

#119
20060062282
2006-03-23

Method for providing packet framing in a communication system

#120
20050281319
2005-12-22

PACKET SPREAD-SPECTRUM RECEIVER

#121
20050271017
2005-12-08

Packet-switched spread-spectrum system

#122
20050265494
2005-12-01

Method and apparatus for code phase tracking

#123
20050259624
2005-11-24

Fast acquisition of traffic channels for a highly variable data rate reverse link of a CDMA wireless communication system

#124
20050249168
2005-11-10

System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system

#125
20050232337
2005-10-20

Method of selecting PN codes for reducing interference between users

#126
20050232140
2005-10-20

Use of orthogonal or near orthogonal codes in reverse link

#127
20050220172
2005-10-06

Methods and apparatus for generating and processing wideband signals having reduced discrete power spectral density components

#128
20050207384
2005-09-22

Signal acquisition in peer-to-peer communications

#129
20050190818
2005-09-01

PN code generator, GOLD code generator, PN code despreader, method for generating PN code, method for generating GOLD code, method for despreading PN code and computer program

#130
20050180375
2005-08-18

System and method for channelization and data multiplexing in a wireless communication network

#131
20050094711
2005-05-05

GMSK spread modulation

#132
20050094613
2005-05-05

Apparatus and method for transmitting/receiving a pilot signal for distinguishing a base station in a communication system using an OFDM scheme

#133
20050074054
2005-04-07

Matched filter for scalable spread spectrum communications systems

#134
20050053122
2005-03-10

Signalling system

#135
20050031023
2005-02-10

Systems and methods for parallel signal cancellation

#136
20050026640
2005-02-03

Pseudorandom number offset assignment system and method

#137
20050013284
2005-01-20

System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system

#138
20050002443
2005-01-06

Method and apparatus for generating complex four-phase sequences for a CDMA communication system

#139
18544075
2025-06-17

Method and computer-readable medium for a correlator using an n-dimensional accumulator to test 2alignments

#140
16598601
2020-08-04

Method of spread code acquisition using phase multiplexed shuffled correlation and concurrent two parameter alignment screening

#141
15956499
2019-07-30

Apparatus and receiver for receiving RF analog signals

#142
14867433
2017-06-20

Method and system for determining when to scan for neighbor sectors having a different frequency assignment