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in which the data are represented by the change in carrier phase
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Modulated-carrier systems
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H04L27/2075
in which the data are represented by the change in carrier phase
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Patents Grants
last 30 patents
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Patent Grant
Selecting a transmission configuration
Patent number
11,870,622
Issue date
Jan 9, 2024
QUALCOMM Incorporated
Idan Michael Horn
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Modulation scheme for high order constellation
Patent number
11,196,598
Issue date
Dec 7, 2021
Huawei Technologies Canada Co., Ltd.
Assem Shoukry Mohamed Hussein
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Secure sounding signals
Patent number
11,044,351
Issue date
Jun 22, 2021
Intel IP Corporation
Qinghua Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Device and method for modulated waveform encryption
Patent number
10,243,735
Issue date
Mar 26, 2019
Raytheon Company
Andrew Kowalevicz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for transmitting phase shift keyed optical sig...
Patent number
9,647,765
Issue date
May 9, 2017
Massachusetts Institute of Technology
David O. Caplan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal modulator and signal modulating method
Patent number
9,374,261
Issue date
Jun 21, 2016
MediaTek Inc.
Chih-Hao Sun
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for phase shift keyed optical communications
Patent number
9,264,147
Issue date
Feb 16, 2016
Massachusetts Institute of Technology
David O. Caplan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Device for carrier phase recovery
Patent number
9,231,805
Issue date
Jan 5, 2016
Telefonaktiebolaget L M Ericsson (Publ)
Thomas Eriksson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Digital light path labeling system with dual polarization quaternar...
Patent number
9,100,127
Issue date
Aug 4, 2015
AT&T Intellectual Property I, L.P.
Mark D. Feuer
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Apparatus and method of transmitting preamble having additional inf...
Patent number
9,065,708
Issue date
Jun 23, 2015
Korea Ocean Research & Development Institute
Seung Geun Kim
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Carrier phase estimation for optically coherent QPSK based on wiene...
Patent number
8,977,136
Issue date
Mar 10, 2015
Technion Research and Development Foundation Ltd.
Netta Sigron
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Method and device for monitoring and controlling phase difference b...
Patent number
8,644,715
Issue date
Feb 4, 2014
ZTE Corporation
Gong Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Radio transmitting apparatus
Patent number
8,565,348
Issue date
Oct 22, 2013
Kabushiki Kaisha Toshiba
Keiji Tsunoda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Differential encoding for multiplexed data streams
Patent number
8,503,568
Issue date
Aug 6, 2013
The Boeing Company
Brian K. Pheiffer
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Digital light path labeling system with dual polarization quaternar...
Patent number
8,351,788
Issue date
Jan 8, 2013
AT&T Intellectual Property I, L.P.
Mark D. Feuer
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Methods and apparatus for balancing modulation in cellular communic...
Patent number
8,238,374
Issue date
Aug 7, 2012
Intellectual Ventures I LLC
Zhaoji Xu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Method for data communication via a voice channel of a wireless com...
Patent number
8,194,779
Issue date
Jun 5, 2012
General Motors LLC
Elizabeth Chesnutt
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Phase interpolation-based clock and data recovery for differential...
Patent number
8,139,701
Issue date
Mar 20, 2012
Fujitsu Limited
Nikola Nedovic
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Demodulation communication signals in a near field radio frequency...
Patent number
7,986,916
Issue date
Jul 26, 2011
Innovision Research & Technology PLC
Andrew Williams
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Encoding and decoding architecture and method for pipelining encode...
Patent number
7,933,354
Issue date
Apr 26, 2011
Semtech Corporation
Samuel A. Steidl
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Systems and methods for DQPSK modulator control using selectively i...
Patent number
7,733,193
Issue date
Jun 8, 2010
CIENA Corporation
Boris Kershteyn
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Method and system for data transmission with decreased bit error rate
Patent number
7,729,441
Issue date
Jun 1, 2010
Pine Valley Investments, Inc.
Richard Duane Taylor
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Differential quadrature phase-shift modulator and method for settin...
Patent number
7,720,392
Issue date
May 18, 2010
Fujitsu Limited
Hisao Nakashima
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Coherent detection for differentially encoded OFDM systems
Patent number
7,710,857
Issue date
May 4, 2010
Newport Media, Inc.
Nabil Yousef
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical communication device
Patent number
7,555,061
Issue date
Jun 30, 2009
Fujitsu Limited
Toru Katagiri
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Apparatus and method for demodulating a modulated signal
Patent number
7,541,966
Issue date
Jun 2, 2009
Oki Techno Centre (Singapore) Pte. Ltd.
Xu Changqing
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multi-layer differential phase shift keying with bit-interleaved co...
Patent number
7,324,613
Issue date
Jan 29, 2008
University of Florida Research Foundation, Inc.
Yuguang Fang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus of 8PSK modulation
Patent number
7,236,543
Issue date
Jun 26, 2007
Huawei Technologies Co., Ltd.
Jing Wang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wireless digital data transmission from a passive transceiver
Patent number
7,035,322
Issue date
Apr 25, 2006
Intel Corporation
Luke E. Girard
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Efficient accurate controller for envelope feedforward power amplif...
Patent number
6,996,191
Issue date
Feb 7, 2006
Skyworks Solutions, Inc.
Joseph Raymond Meditz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
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Patent Application
SYMBOL SENDING METHOD, SYMBOL RECEIVING METHOD, SENDING DEVICE, REC...
Publication number
20240205060
Publication date
Jun 20, 2024
ZTE Corporation
Zhifeng YUAN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SELECTING A TRANSMISSION CONFIGURATION
Publication number
20210392021
Publication date
Dec 16, 2021
QUALCOMM Incorporated
Idan Michael Horn
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MODULATION SCHEME FOR HIGH ORDER CONSTELLATION
Publication number
20210377086
Publication date
Dec 2, 2021
HUAWEI TECHNOLOGIES CANADA CO., LTD.
ASSEM SHOUKRY MOHAMED HUSSEIN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SECURE SOUNDING SIGNALS
Publication number
20190182365
Publication date
Jun 13, 2019
Qinghua Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DEVICE AND METHOD FOR MODULATED WAVEFORM ENCRYPTION
Publication number
20170150348
Publication date
May 25, 2017
Raytheon Company
Andrew Kowalevicz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
System and Method for Pilot Signal Transmission
Publication number
20170111147
Publication date
Apr 20, 2017
Huawei Technologies Co., Ltd
Yu Cao
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CARRIER PHASE ESTIMATION FOR OPTICALLY COHERENT QPSK BASED ON WIENE...
Publication number
20140050493
Publication date
Feb 20, 2014
Netta Sigron
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DIGITAL LIGHT PATH LABELING SYSTEM WITH DUAL POLARIZATION QUATERNAR...
Publication number
20130084069
Publication date
Apr 4, 2013
AT&T INTELLECTUAL PROPERTY I, L.P.
Mark D. Feuer
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RADIO TRANSMITTING APPARATUS
Publication number
20130028350
Publication date
Jan 31, 2013
Kabushiki Kaisha Toshiba
Keiji Tsunoda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL MODULATOR AND SIGNAL MODULATING METHOD
Publication number
20130016796
Publication date
Jan 17, 2013
Chih-Hao Sun
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multiple-Symbol Polarization Switching for Differential-Detection M...
Publication number
20120321303
Publication date
Dec 20, 2012
NEC Laboratories America, Inc.
Shaoliang Zhang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
APPARATUS AND METHOD OF TRANSMITTING PREAMBLE HAVING ADDITIONAL INF...
Publication number
20120300793
Publication date
Nov 29, 2012
KOREA OCEAN RESEARCH AND DEVELOPMENT INSTITUTE
Seung Geun Kim
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method and Device for Monitoring and Controlling Phase Difference B...
Publication number
20120230677
Publication date
Sep 13, 2012
ZTE Corporation
Gong Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Phase Interpolation-Based Clock and Data Recovery for Differential...
Publication number
20120033773
Publication date
Feb 9, 2012
FUJITSU LIMITED
Nikola Nedovic
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Digital Light Path Labeling System with Dual Polarization Quaternar...
Publication number
20120014695
Publication date
Jan 19, 2012
AT&T INTELLECTUAL PROPERTY I, L.P.
Mark D. Feuer
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD AND APPARATUS FOR PHASE SHIFT KEYED OPTICAL COMMUNICATIONS
Publication number
20110274429
Publication date
Nov 10, 2011
Massachusetts Institute of Technology
David O. Caplan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ZIGBEE COMMUNICATION APPARATUS AND METHOD FOR HIGH-SPEED TRANSMISSI...
Publication number
20100202564
Publication date
Aug 12, 2010
Sang-Yun Hwang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Near Field RF Communications
Publication number
20090137219
Publication date
May 28, 2009
Andrew Williams
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SYSTEMS AND METHODS FOR DQPSK MODULATOR CONTROL USING SELECTIVELY I...
Publication number
20090115544
Publication date
May 7, 2009
Boris Kershteyn
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COHERENT DETECTION FOR DIFFERENTIALLY ENCODED OFDM SYSTEMS
Publication number
20080316909
Publication date
Dec 25, 2008
Nabil Yousef
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Methods and Apparatus for Balancing Modulation in Cellular Communic...
Publication number
20080311920
Publication date
Dec 18, 2008
Spyder Navigations L.L.C.
Zhaoji Xu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Encoding and decoding architecture and method for pipelining encode...
Publication number
20080118246
Publication date
May 22, 2008
Sierra Monolithics, Inc.
Samuel A. Steidl
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
APPARATUS AND METHOD FOR DEMODULATING A MODULATED SIGNAL
Publication number
20080062029
Publication date
Mar 13, 2008
Xu Changqing
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method and system for data transmission with decreased bit error rate
Publication number
20080031378
Publication date
Feb 7, 2008
M/A-COM, Inc.
Richard Duane Taylor
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSMITTING APPARATUS AND METHOD, RECEIVING APPARATUS AND METHOD
Publication number
20080025431
Publication date
Jan 31, 2008
Kabushiki Kaisha Toshiba
Seiichiro Horikawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD FOR DATA COMMUNICATION VIA A VOICE CHANNEL OF A WIRELESS COM...
Publication number
20070258398
Publication date
Nov 8, 2007
GENERAL MOTORS CORPORATION
Elizabeth Chesnutt
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Coding circuit and coding apparatus
Publication number
20070075880
Publication date
Apr 5, 2007
YOKOGAWA ELECTRIC CORPORATION
Kenji Uchida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Differential quadrature phase-shift modulator and method for settin...
Publication number
20070047969
Publication date
Mar 1, 2007
FUJITSU LIMITED
Hisao Nakashima
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical communication device
Publication number
20060193399
Publication date
Aug 31, 2006
FUJITSU LIMITED
Toru Katagiri
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Normalised coherent amplitude and differential phase modulation met...
Publication number
20060146960
Publication date
Jul 6, 2006
Jorge Vicente Blasco Claret
H04 - ELECTRIC COMMUNICATION TECHNIQUE