FR2368832A1 - Circuit electrique pour produire un grand nombre de codes differents - Google Patents

Circuit electrique pour produire un grand nombre de codes differents

Info

Publication number
FR2368832A1
FR2368832A1 FR7217431A FR7217431A FR2368832A1 FR 2368832 A1 FR2368832 A1 FR 2368832A1 FR 7217431 A FR7217431 A FR 7217431A FR 7217431 A FR7217431 A FR 7217431A FR 2368832 A1 FR2368832 A1 FR 2368832A1
Authority
FR
France
Prior art keywords
different codes
large number
semi
electrical circuit
adder
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.)
Withdrawn
Application number
FR7217431A
Other languages
English (en)
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of FR2368832A1 publication Critical patent/FR2368832A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Dc Digital Transmission (AREA)
  • Radio Relay Systems (AREA)

Abstract

L'invention concerne un circuit électrique pour produire un grand nombre de codes différents. Ce circuit comporte deux générateurs principaux G1, G2 de code, constitués respectivement par un réseau séquentiel et prévus pour produire des codes différents, au moins un semi-additionneur (Ha,) et au moins un réseau de retard V, ledit semi-additionneur représentant le circuit de sortie à chacune des entrées duquel est appliqué l'un des deux codes tandis que le réseau de retard est disposé dans la voie de liaison entre l'un des deux générateurs principaux de code et le semi-additionneur. L'invention est notamment applicable à des appareils et dispositifs travaillant suivant la technique dite de modulation à accès multiple et à spectre étalé.
FR7217431A 1971-05-17 1972-05-16 Circuit electrique pour produire un grand nombre de codes differents Withdrawn FR2368832A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2124320A DE2124320C1 (de) 1971-05-17 1971-05-17 Elektrische Schaltung zur Erzeugung einer Vielzahl verschiedener Codes

Publications (1)

Publication Number Publication Date
FR2368832A1 true FR2368832A1 (fr) 1978-05-19

Family

ID=5808068

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7217431A Withdrawn FR2368832A1 (fr) 1971-05-17 1972-05-16 Circuit electrique pour produire un grand nombre de codes differents

Country Status (7)

Country Link
US (1) US4320513A (fr)
CA (1) CA1029443A (fr)
DE (1) DE2124320C1 (fr)
FR (1) FR2368832A1 (fr)
GB (1) GB1502761A (fr)
IT (1) IT1019534B (fr)
NL (1) NL156876B (fr)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8202547A (nl) * 1982-06-23 1984-01-16 Philips Nv Werkwijze voor het opwekken van een pseudo-random reeks van tekens met grote reekslengte.
US4507746A (en) * 1982-07-28 1985-03-26 The United States Of America As Represented By The Secretary Of The Army Programmable matched filter for binary phase-coded signals
FR2549663A1 (fr) * 1983-07-21 1985-01-25 Snecma Procede et dispositif pour le codage et le decodage d'une emission a large bande
US4707839A (en) * 1983-09-26 1987-11-17 Harris Corporation Spread spectrum correlator for recovering CCSK data from a PN spread MSK waveform
US5257282A (en) * 1984-06-28 1993-10-26 Unisys Corporation High speed code sequence generator
DE3614638A1 (de) * 1986-04-30 1987-11-05 Messerschmitt Boelkow Blohm Verfahren und vorrichtung zur synchronisation von datenstroemen
JP2620069B2 (ja) * 1986-10-09 1997-06-11 クラリオン株式会社 スペクトラム拡散通信方式
US4860236A (en) * 1987-10-26 1989-08-22 University Of Manitoba Cellular automaton for generating random data
US4961159A (en) * 1987-10-26 1990-10-02 University Of Manitoba Cellular automaton for generating random data
JPH0250512A (ja) * 1988-08-10 1990-02-20 Clarion Co Ltd 疑似ランダム雑音符号発生装置
US4959832A (en) * 1988-12-09 1990-09-25 International Business Machines Parallel pseudorandom pattern generator with varying phase shift
US5022049A (en) * 1989-11-21 1991-06-04 Unisys Corp. Multiple access code acquisition system
US5031192A (en) * 1990-02-05 1991-07-09 United States Of America As Represented By The Secretary Of The Air Force Synthetic demodulation of spread spectrum signals
US5210770A (en) * 1991-09-27 1993-05-11 Lockheed Missiles & Space Company, Inc. Multiple-signal spread-spectrum transceiver
US7020111B2 (en) * 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
US6831905B1 (en) 1995-06-30 2004-12-14 Interdigital Technology Corporation Spread spectrum system assigning information signals to message-code signals
US6816473B2 (en) 1995-06-30 2004-11-09 Interdigital Technology Corporation Method for adaptive forward power control for spread-spectrum communications
US6940840B2 (en) 1995-06-30 2005-09-06 Interdigital Technology Corporation Apparatus for adaptive reverse power control for spread-spectrum communications
US7072380B2 (en) * 1995-06-30 2006-07-04 Interdigital Technology Corporation Apparatus for initial power control for spread-spectrum communications
US7123600B2 (en) * 1995-06-30 2006-10-17 Interdigital Technology Corporation Initial power control for spread-spectrum communications
US7929498B2 (en) * 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US6885652B1 (en) 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US6697350B2 (en) 1995-06-30 2004-02-24 Interdigital Technology Corporation Adaptive vector correlator for spread-spectrum communications
JP3483991B2 (ja) * 1995-07-27 2004-01-06 沖電気工業株式会社 符号分割多重アクセス通信用拡散符号発生器、符号分割多重アクセス通信システム及び符号分割多重アクセス通信用拡散符号発生方法
US6741638B2 (en) 1997-06-23 2004-05-25 Schlumbergersema Inc. Bandpass processing of a spread spectrum signal
US6047016A (en) * 1997-06-23 2000-04-04 Cellnet Data Systems, Inc. Processing a spread spectrum signal in a frequency adjustable system
US6628699B2 (en) 1997-06-23 2003-09-30 Schlumberger Resource Management Systems, Inc. Receiving a spread spectrum signal
US6456644B1 (en) 1997-06-23 2002-09-24 Cellnet Data Systems, Inc. Bandpass correlation of a spread spectrum signal
US6178197B1 (en) 1997-06-23 2001-01-23 Cellnet Data Systems, Inc. Frequency discrimination in a spread spectrum signal processing system
JP3825179B2 (ja) * 1998-07-17 2006-09-20 富士通株式会社 相関器
ATE372618T1 (de) 1999-07-07 2007-09-15 Samsung Electronics Co Ltd Vorrichtung und verfahren zur erzeugung von verwürfelungskodes in einem umts mobil- nachrichtenübertragungssystem
KR100594042B1 (ko) * 1999-09-22 2006-06-28 삼성전자주식회사 비동기 이동통신시스템의 멀티 스크램블링 코드 생성 장치 및 방법
US7129753B2 (en) * 2004-05-26 2006-10-31 Infineon Technologies Ag Chip to chip interface
US20080240168A1 (en) * 2007-03-31 2008-10-02 Hoffman Jeffrey D Processing wireless and broadband signals using resource sharing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1585273A (fr) * 1967-06-13 1970-01-16
FR2044948A5 (fr) * 1969-05-08 1971-02-26 Siemens Ag
FR2354687A5 (fr) * 1971-04-29 1978-01-06 Siemens Ag Circuit electrique comportant un generateur de code

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH435363A (de) * 1965-11-26 1967-05-15 Patelhold Patentverwertung Einrichtung zur Synchronisierung von Impulsgeneratoren
US3515805A (en) * 1967-02-06 1970-06-02 Bell Telephone Labor Inc Data scrambler
GB1172617A (en) * 1967-09-18 1969-12-03 Solartron Electronic Group The Generation of Binomially-Distributed Pseudo-Random Electrical Signals
US3700806A (en) * 1967-09-18 1972-10-24 Csf Key generators for cryptographic devices
US3617723A (en) * 1970-02-25 1971-11-02 Collins Radio Co Digitalized multiplier
US3665171A (en) * 1970-12-14 1972-05-23 Bell Telephone Labor Inc Nonrecursive digital filter apparatus employing delayedadd configuration
US3728528A (en) * 1971-03-24 1973-04-17 Allen Bradley Co Circular interpolation by finite differences
US3751648A (en) * 1971-12-01 1973-08-07 Communications Satellite Corp Generalized shift register pulse sequence generator
US3761696A (en) * 1972-02-16 1973-09-25 Signetics Corp Random integer generator and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1585273A (fr) * 1967-06-13 1970-01-16
FR2044948A5 (fr) * 1969-05-08 1971-02-26 Siemens Ag
FR2354687A5 (fr) * 1971-04-29 1978-01-06 Siemens Ag Circuit electrique comportant un generateur de code

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV8049/64 *

Also Published As

Publication number Publication date
NL156876B (nl) 1978-05-16
NL7206629A (nl) 1978-01-31
CA1029443A (fr) 1978-04-11
US4320513A (en) 1982-03-16
GB1502761A (en) 1978-03-01
DE2124320C1 (de) 1978-04-27
IT1019534B (it) 1977-11-30

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Legal Events

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ST Notification of lapse