FR2765048B1 - Procede de modulation/demodulation de signaux et systeme pour sa mise en oeuvre - Google Patents

Procede de modulation/demodulation de signaux et systeme pour sa mise en oeuvre

Info

Publication number
FR2765048B1
FR2765048B1 FR9807701A FR9807701A FR2765048B1 FR 2765048 B1 FR2765048 B1 FR 2765048B1 FR 9807701 A FR9807701 A FR 9807701A FR 9807701 A FR9807701 A FR 9807701A FR 2765048 B1 FR2765048 B1 FR 2765048B1
Authority
FR
France
Prior art keywords
implementing
signal modulation
demodulation method
demodulation
modulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
FR9807701A
Other languages
English (en)
Other versions
FR2765048A1 (fr
Inventor
Bruce Edward Shockey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cincinnati Electronics Corp
Original Assignee
Cincinnati Electronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cincinnati Electronics Corp filed Critical Cincinnati Electronics Corp
Publication of FR2765048A1 publication Critical patent/FR2765048A1/fr
Application granted granted Critical
Publication of FR2765048B1 publication Critical patent/FR2765048B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
FR9807701A 1997-06-20 1998-06-18 Procede de modulation/demodulation de signaux et systeme pour sa mise en oeuvre Expired - Fee Related FR2765048B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/879,356 US6094450A (en) 1997-06-20 1997-06-20 Spread spectrum chip shift keying modulation/demodulation system and method

Publications (2)

Publication Number Publication Date
FR2765048A1 FR2765048A1 (fr) 1998-12-24
FR2765048B1 true FR2765048B1 (fr) 2004-10-22

Family

ID=25373993

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9807701A Expired - Fee Related FR2765048B1 (fr) 1997-06-20 1998-06-18 Procede de modulation/demodulation de signaux et systeme pour sa mise en oeuvre

Country Status (4)

Country Link
US (1) US6094450A (fr)
CA (1) CA2230526C (fr)
FR (1) FR2765048B1 (fr)
GB (1) GB2327832B (fr)

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KR19990074228A (ko) * 1998-03-03 1999-10-05 윤종용 영교차 검출을 이용한 변조장치 및 방법
GB2340700B (en) * 1998-08-13 2000-07-12 Ramar Technology Ltd A technique to extend the jamming margin of a DSSS communication system
US7085246B1 (en) * 1999-05-19 2006-08-01 Motorola, Inc. Method and apparatus for acquisition of a spread-spectrum signal
US6606357B1 (en) * 1999-09-10 2003-08-12 Harris Corporation Carrier injecting waveform-based modulation scheme for reducing satellite transponder power requirements and earth terminal antenna size
FI111578B (fi) * 1999-10-13 2003-08-15 U Nav Microelectronics Corp Korrelaattori
JP3793380B2 (ja) * 1999-10-22 2006-07-05 株式会社エヌ・ティ・ティ・ドコモ Ｃｄｍａ移動通信システムにおける下りリンクのパイロットチャネルの送信方法およびｃｄｍａ移動通信システム
EP1282258A1 (fr) * 2001-08-02 2003-02-05 Mitsubishi Electric Information Technology Centre Europe B.V. Procédé et dispositif de synchronisation de récepteurs
JP2004274403A (ja) * 2003-03-07 2004-09-30 Sony Ericsson Mobilecommunications Japan Inc データ送信方法、データ受信方法、データ伝送方法、データ送信装置、データ受信装置及びデータ伝送システム
US6947493B2 (en) * 2003-10-10 2005-09-20 Atmel Corporation Dual phase pulse modulation decoder circuit
US7283011B2 (en) * 2003-10-10 2007-10-16 Atmel Corporation Method for performing dual phase pulse modulation
US7103110B2 (en) * 2003-10-10 2006-09-05 Atmel Corporation Dual phase pulse modulation encoder circuit
US7062228B2 (en) * 2004-05-10 2006-06-13 Harris Corporation Cellular communications system using baseband carrier injection and related methods
US7079577B2 (en) * 2004-09-08 2006-07-18 Atmel Corporation Wide window decoder circuit for dual phase pulse modulation
US7583772B2 (en) * 2005-02-22 2009-09-01 Broadcom Corporation System for shifting data bits multiple times per clock cycle
US7293250B2 (en) * 2005-11-14 2007-11-06 Infineon Technologies, Ag Method of modeling physical layout of an electronic component in channel simulation
US8149956B1 (en) * 2007-04-23 2012-04-03 The United States Of America As Represented By The Secretary Of The Army Method of automated demodulation and classification of phase-shift-keying signals using hysteretic differential zero-crossing time samples
US8391401B2 (en) * 2008-09-23 2013-03-05 Qualcomm Incorporated Highly detectable pilot structure
US9680520B2 (en) 2013-03-22 2017-06-13 University Of Washington Through Its Center For Commercialization Ambient backscatter tranceivers, apparatuses, systems, and methods for communicating using backscatter of ambient RF signals
WO2015123341A1 (fr) 2014-02-11 2015-08-20 University Of Washington Procédés, systèmes et dispositifs de communication dans un réseau sans fil pouvant être mis en œuvre à l'aide d'énergie récupérée
US9973367B2 (en) 2014-02-11 2018-05-15 University Of Washington Apparatuses, systems, and methods for communicating using MIMO and spread spectrum coding in backscatter of ambient signals
US10079616B2 (en) 2014-12-19 2018-09-18 University Of Washington Devices and methods for backscatter communication using one or more wireless communication protocols including bluetooth low energy examples
CA2975448C (fr) * 2015-02-09 2019-12-31 Concentric Real Time, Llc Recepteur radio pour determiner l'emplacement d'une source de signal
EP3335432B1 (fr) 2015-08-12 2024-02-14 University of Washington Dispositifs de rétrodiffusion et systèmes de réseau incorporant des dispositifs de rétrodiffusion
EP3408681B1 (fr) 2016-01-26 2024-01-24 University of Washington Dispositifs de rétrodiffusion comprenant des exemples de fonctionnement à bande latérale unique
WO2017176772A1 (fr) 2016-04-04 2017-10-12 University Of Washington Dispositifs et systèmes de rétrodiffusion fournissant des signaux rétrodiffusés comportant des paquets ofdm
WO2018075653A1 (fr) 2016-10-18 2018-04-26 University Of Washington Systèmes, dispositifs et techniques de rétrodiffusion utilisant une modulation css et/ou une suppression d'harmoniques d'ordre supérieur
US10461783B2 (en) 2017-03-16 2019-10-29 University Of Washington Radio frequency communication devices having backscatter and non-backscatter communication modes and hardware re-use
US11212479B2 (en) 2017-04-06 2021-12-28 University Of Washington Image and/or video transmission using backscatter devices

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Publication number Priority date Publication date Assignee Title
US4217586A (en) * 1977-05-16 1980-08-12 General Electric Company Channel estimating reference signal processor for communication system adaptive antennas
US4583231A (en) * 1983-11-02 1986-04-15 General Electric Company Method of, and apparatus for, frequency-hopped frequency-shift-keyed digital data communications
US5257282A (en) * 1984-06-28 1993-10-26 Unisys Corporation High speed code sequence generator
FR2629931B1 (fr) * 1988-04-08 1991-01-25 Lmt Radio Professionelle Correlateur numerique asynchrone et demodulateurs comportant un tel correlateur
JPH0748707B2 (ja) * 1988-09-06 1995-05-24 三菱電機株式会社 直接拡散変調装置
GB8916623D0 (en) * 1989-07-20 1989-09-06 Ncr Co Spread spectrum signal demodulator
US5499265A (en) * 1989-08-07 1996-03-12 Omnipoint Data Company, Incorporated Spread spectrum correlator
US5166951A (en) * 1991-05-15 1992-11-24 Scs Mobilecom, Inc. High capacity spread spectrum channel
JPH0537491A (ja) * 1991-07-31 1993-02-12 Clarion Co Ltd スペクトラム拡散通信装置
US5243622A (en) * 1991-08-02 1993-09-07 General Dynamics Corporation, Electronics Division Direct-sequence spread-spectrum communication system with asynchronous despreading
GB2290199A (en) * 1992-03-20 1995-12-13 Clarion Co Ltd CPSK spread spectrum communication
US5313457A (en) * 1992-04-14 1994-05-17 Trimble Navigation Limited Code position modulation system and method for multiple user satellite communications
JP2771757B2 (ja) * 1992-06-29 1998-07-02 三菱電機株式会社 スペクトル拡散通信用受信装置のデータ復調回路
US5355389A (en) * 1993-01-13 1994-10-11 Omnipoint Corporation Reciprocal mode saw correlator method and apparatus
US5414728A (en) * 1993-11-01 1995-05-09 Qualcomm Incorporated Method and apparatus for bifurcating signal transmission over in-phase and quadrature phase spread spectrum communication channels
US5654978A (en) * 1993-11-01 1997-08-05 Omnipoint Corporation Pulse position modulation with spread spectrum
KR970011690B1 (ko) * 1994-11-22 1997-07-14 삼성전자 주식회사 파일럿트 채널을 이용한 대역확산 통신시스템의 데이타 송신기 및 수신기

Also Published As

Publication number Publication date
FR2765048A1 (fr) 1998-12-24
US6094450A (en) 2000-07-25
GB2327832A (en) 1999-02-03
CA2230526A1 (fr) 1998-12-20
GB9808302D0 (en) 1998-06-17
GB2327832B (en) 2002-06-12
CA2230526C (fr) 2001-12-25

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20080229