FR2508742B1 - Circuit pour synchroniser le fonctionnement d'un emetteur et d'un ou plusieurs recepteurs radioelectriques - Google Patents

Circuit pour synchroniser le fonctionnement d'un emetteur et d'un ou plusieurs recepteurs radioelectriques

Info

Publication number
FR2508742B1
FR2508742B1 FR8211095A FR8211095A FR2508742B1 FR 2508742 B1 FR2508742 B1 FR 2508742B1 FR 8211095 A FR8211095 A FR 8211095A FR 8211095 A FR8211095 A FR 8211095A FR 2508742 B1 FR2508742 B1 FR 2508742B1
Authority
FR
France
Prior art keywords
synchronizing
transmitter
circuit
radio receivers
receivers
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
Application number
FR8211095A
Other languages
English (en)
Other versions
FR2508742A1 (fr
Inventor
Peter Jacques Munday
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.)
Thales Research and Technology UK Ltd
Racal Research Ltd
Original Assignee
Thales Research and Technology UK Ltd
Racal Research Ltd
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 Thales Research and Technology UK Ltd, Racal Research Ltd filed Critical Thales Research and Technology UK Ltd
Publication of FR2508742A1 publication Critical patent/FR2508742A1/fr
Application granted granted Critical
Publication of FR2508742B1 publication Critical patent/FR2508742B1/fr
Expired 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
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/7156—Arrangements for sequence synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0602—Systems characterised by the synchronising information used
    • H04J3/0605—Special codes used as synchronising signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
FR8211095A 1981-06-24 1982-06-24 Circuit pour synchroniser le fonctionnement d'un emetteur et d'un ou plusieurs recepteurs radioelectriques Expired FR2508742B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08119492A GB2100944B (en) 1981-06-24 1981-06-24 Synchronisation circuits

Publications (2)

Publication Number Publication Date
FR2508742A1 FR2508742A1 (fr) 1982-12-31
FR2508742B1 true FR2508742B1 (fr) 1986-05-09

Family

ID=10522777

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8211095A Expired FR2508742B1 (fr) 1981-06-24 1982-06-24 Circuit pour synchroniser le fonctionnement d'un emetteur et d'un ou plusieurs recepteurs radioelectriques

Country Status (6)

Country Link
US (1) US4442527A (fr)
AU (1) AU552269B2 (fr)
DE (1) DE3222993C2 (fr)
FR (1) FR2508742B1 (fr)
GB (1) GB2100944B (fr)
SE (1) SE453706B (fr)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129655B (en) * 1982-09-08 1986-02-05 Racal Res Ltd Improvements in and relating to radio communications
JPS60212049A (ja) * 1984-04-06 1985-10-24 Nec Corp フレ−ム同期方式
DE3429454C1 (de) * 1984-08-10 1999-03-11 Siemens Ag Relaisstelle für drahtlosen Nachrichtenverkehr
DE3432357C1 (de) * 1984-09-03 1986-02-27 C. Plath Gmbh Nautisch-Elektronische Technik, 2000 Hamburg Verfahren und Vorrichtung zum Empfang und zur Peilung von nach dem Frequenzsprungsverfahren arbeitenden Sendern
US4763357A (en) * 1985-04-18 1988-08-09 Barr William S Method and apparatus for providing secure electronic communications
US4677617A (en) * 1985-10-04 1987-06-30 Hughes Aircraft Company Rapid frequency-hopping time synchronization
NL8600576A (nl) * 1986-03-06 1987-10-01 Hollandse Signaalapparaten Bv Communicatiesysteem.
IL82561A (en) * 1986-05-27 1991-12-15 Fairchild Weston Systems Inc Secure communication system for multiple remote units
US4752939A (en) * 1986-09-03 1988-06-21 Hughes Aircraft Company Hidden preamble for frequency hopped synchronization
US4903279A (en) * 1986-09-30 1990-02-20 Aisin Seiki Kabushiki Kaisha Receiver for spread spectrum communication and receiving method for the same
US5040189A (en) * 1987-01-12 1991-08-13 Motorola, Inc. Multiple frequency radio system employing pulse repeaters
US4817148A (en) * 1987-07-06 1989-03-28 Wegener Communications, Inc. Signal scrambling transmission system
US4791653A (en) * 1987-08-25 1988-12-13 Hewlett-Packard Company Pseudorandom word sequence synchronizer
GB2229874B (en) * 1989-02-04 1992-09-16 Plessey Co Plc Improvements relating to communication systems
US5121408A (en) * 1989-10-16 1992-06-09 Hughes Aircraft Company Synchronization for entry to a network in a frequency hopping communication system
US5130987A (en) * 1990-03-23 1992-07-14 Metricom, Inc. Method for synchronizing a wide area network without global synchronizing
EP0447987B1 (fr) * 1990-03-23 1997-08-06 METRICOM, INC. (a Delaware corp.) Procédé de synchronisation d'un réseau sans synchronisation globale
US5311542A (en) * 1990-09-19 1994-05-10 Honeywell Inc. Spread spectrum communication system
US5349611A (en) * 1992-11-13 1994-09-20 Ampex Systems Corporation Recovering synchronization in a data stream
GB9312836D0 (en) * 1993-06-22 1993-08-04 Schlumberger Ind Ltd Multipoint to point radiocommunications network
FR2722045B1 (fr) * 1994-06-30 1996-08-23 Alcatel Telspace Procede de recherche d'acquisition de synchronisation temporelle entre une sequence d'etalement d'un recepteur et celle d'un emetteur
KR0142949B1 (ko) * 1995-06-16 1998-08-01 김광호 이동국과 기지국간의 초기 동기 맞춤시간을 최소화한 주파수 운용 방법
KR100217727B1 (ko) 1997-06-25 1999-09-01 윤종용 이동 무선 통신 시스템에서 이동 무선 단말기간의 직접 통화 제어 방법
CA2349656C (fr) * 2001-06-04 2005-09-06 Strategic Vista International Inc. Methode et appareil de communication bidirectionnelle parmi plusieurs dispositifs de communication
CN1836415A (zh) * 2003-08-13 2006-09-20 皇家飞利浦电子股份有限公司 用于数字传输系统的加密方法和解码方法
JP4605048B2 (ja) * 2005-03-09 2011-01-05 パナソニック株式会社 主側通信装置および従側通信装置
WO2008027619A2 (fr) * 2006-09-01 2008-03-06 Intermec Ip Corp. Système d'étiquette rfid avec encodage de bloc, tel qu'un encodage de bloc espace-temps
US8754749B2 (en) * 2006-09-01 2014-06-17 Intermec Ip Corp. RFID tags with CDMA communication capabilities
US8587406B2 (en) * 2006-09-01 2013-11-19 Intermec Ip Corp. RFID tags with orthogonal communication capabilities, and associated systems
US8391416B1 (en) * 2009-08-05 2013-03-05 Rockwell Collins, Inc. Syncronization frequency diversity reception utilizing a single RF receiver
US9793949B1 (en) * 2016-10-07 2017-10-17 Trellisware Technologies, Inc. Methods and systems for secure and efficient flexible frequency hopping access

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193030A (en) * 1968-08-01 1980-03-11 International Telephone And Telegraph Corporation Frequency hopping communication system
CH515576A (de) * 1970-08-20 1971-11-15 Hagelin Boris Caesar Wilhelm Gerät zur Ver- und Entschlüsselung von mehrstellig codierten Signalen
FR2405601A1 (fr) * 1975-12-18 1979-05-04 Trt Telecom Radio Electr Systeme radioelectrique de transmission d'informations par modulation d'une porteuse a frequence variable par sauts
US4023103A (en) * 1976-01-26 1977-05-10 The United States Of America As Represented By The Secretary Of The Army Synchronizer for frequency hopping receiver
US4267592A (en) * 1979-03-30 1981-05-12 Rockwell International Corporation Anti-jam radio
US4349915A (en) * 1981-02-02 1982-09-14 General Electric Company Minimization of multipath and doppler effects in radiant energy communication systems

Also Published As

Publication number Publication date
GB2100944A (en) 1983-01-06
FR2508742A1 (fr) 1982-12-31
DE3222993C2 (de) 1986-01-09
AU8515582A (en) 1983-01-06
SE8203638L (sv) 1982-12-25
GB2100944B (en) 1985-03-06
AU552269B2 (en) 1986-05-29
SE453706B (sv) 1988-02-22
DE3222993A1 (de) 1983-02-17
US4442527A (en) 1984-04-10

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Legal Events

Date Code Title Description
ST Notification of lapse