ES2080194T3 - Procedimiento de transmision numerica con exposicion de espectro por secuencia directa con cambio de secuencias en el curso de la transmision, y emisor y receptor que lo realizan. - Google Patents

Procedimiento de transmision numerica con exposicion de espectro por secuencia directa con cambio de secuencias en el curso de la transmision, y emisor y receptor que lo realizan.

Info

Publication number
ES2080194T3
ES2080194T3 ES91110397T ES91110397T ES2080194T3 ES 2080194 T3 ES2080194 T3 ES 2080194T3 ES 91110397 T ES91110397 T ES 91110397T ES 91110397 T ES91110397 T ES 91110397T ES 2080194 T3 ES2080194 T3 ES 2080194T3
Authority
ES
Spain
Prior art keywords
elements
receiver
complex elements
sequence
transmission
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 - Lifetime
Application number
ES91110397T
Other languages
English (en)
Inventor
Alain Gressier
Philippe Sehier
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.)
Alcatel CIT SA
Original Assignee
Alcatel Telspace SA
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 Alcatel Telspace SA filed Critical Alcatel Telspace SA
Application granted granted Critical
Publication of ES2080194T3 publication Critical patent/ES2080194T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

EL RECEPTOR CONTIENE: MEDIANOS RECEPTORES Y DEMODULADORES (20), DANDO A PARTIR DE LA SEÑAL RECIBIDA UNA SUCESION DE ELEMENTOS COMPLEJOS (S(KT)); MEDIOS PARA PRODUCIR SECUENCIAS DE ELEMENTOS COMPLEJOS SUCESIVOS (C SUB J ELEVADO *) CONSTITUIDOS DE ELEMENTOS CONJUGADOS DE ELEMENTOS HOMOLOGOS UTILIZADOS EN LA EMISION; MEDIOS (27) PARA SINCRONIZAR LAS SECUENCIAS EN RECEPCION Y EN EMISION; MEDIOS PARA MULTIPLICAR LOS ELEMENTOS COMPLEJOS (S(KT)) OBTENIDOS EN SALIDA DE DEMODULACION POR UNA SECUENCIA CORRESPONDIENTE DE ELEMENTOS COMPLEJOS SUCESIVOS ASI PRODUCIDOS Y SINCRONIZADOS; Y MEDIOS SUMADOR (28) PARA SUMAR SOBRE LA DURACION DE UN SIMBOLO DE INFORMACION LOS ELEMENTOS COMPLEJOS RESULTANTES QUE SE SUCEDEN DURANTE ESE TIEMPO, DE MANERA QUE SE PUEDE DAR UNA ESTIMACION DE LOS SIMBOLOS DE INFORMACION INICIALES UTILIZADOS EN LA EMISION. SEGUN LA INVENCION, CONTIENE ADEMAS MEDIOS (21, 22, 23, 24) PARA ANALIZAR LOS ELEMENTOS COMPLEJOS (S(KT)) OBTENIDOS EN SALIDA DE DEMODULACION DE MANERA A DETERMINAR UNMARCADO INTRODUCIDO A LA EMISION, Y MEDIOS SELECTORES (25), MANDADOS SEGUN EL MARCADO ASI DETERMINADO DE FORMA A CONSERVAR LA MISMA SECUENCIA DE ELEMENTOS COMPLEJOS CONJUGADOS, O DE CAMBIAR DE SECUENCIA; LOS CAMBIOS SUCESIVOS DE SECUENCIA SE PRODUCEN EN MOMENTOS ALEATORIOS, DETERMINADOS POR EL RECEPTOR SEGUN EL UNICO ANALISIS DE SUSODICHOS MARCADOS, PERO SEGUN UN ORDEN DETERMINISTA, INTRISECAMENTE POR EL RECEPTOR. EL MARCADO PUEDE RADICAR EL VALOR, IDENTICO U OPUESTO, ATRIBUIDO A LOS DOS PRIMEROS ELEMENTOS DE LA SECUENCIA CORRESPONDIENTE A CADA SIMBOLO DE INFORMACION.
ES91110397T 1990-06-28 1991-06-24 Procedimiento de transmision numerica con exposicion de espectro por secuencia directa con cambio de secuencias en el curso de la transmision, y emisor y receptor que lo realizan. Expired - Lifetime ES2080194T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9008179A FR2664113B1 (fr) 1990-06-28 1990-06-28 Procede de transmission numerique a etalement de spectre par sequence directe a changement de sequences en cours de transmission, et emetteur et recepteur le mettant en óoeuvre.

Publications (1)

Publication Number Publication Date
ES2080194T3 true ES2080194T3 (es) 1996-02-01

Family

ID=9398123

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91110397T Expired - Lifetime ES2080194T3 (es) 1990-06-28 1991-06-24 Procedimiento de transmision numerica con exposicion de espectro por secuencia directa con cambio de secuencias en el curso de la transmision, y emisor y receptor que lo realizan.

Country Status (6)

Country Link
US (1) US5170410A (es)
EP (1) EP0470352B1 (es)
CA (1) CA2045881C (es)
DE (1) DE69114075T2 (es)
ES (1) ES2080194T3 (es)
FR (1) FR2664113B1 (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5353302A (en) * 1993-02-03 1994-10-04 At&T Bell Laboratories Signal despreader for CDMA systems
US5341396A (en) * 1993-03-02 1994-08-23 The Boeing Company Multi-rate spread system
CA2174343C (en) * 1993-11-01 2003-10-14 Ephraim Zehavi Method and apparatus for the transmission of variable rate digital data
JP2734955B2 (ja) * 1993-12-24 1998-04-02 日本電気株式会社 無線データ通信装置
US5570351A (en) * 1994-10-11 1996-10-29 Lucent Technologies Inc. Multi-user communication system employing spread signatures
US5625642A (en) * 1994-10-11 1997-04-29 Lucent Technologies Inc. Spread-response precoding system having signature sequences longer than the inter-symbol time interval
US5574747A (en) * 1995-01-04 1996-11-12 Interdigital Technology Corporation Spread spectrum adaptive power control system and method
US5960028A (en) * 1995-08-11 1999-09-28 Sharp Kabushiki Kaisha Spread spectrum communication system
CN1114282C (zh) * 1998-05-12 2003-07-09 三星电子株式会社 减小移动台发射功率的蜂值与平均值功率比的装置和方法
FR2799072B1 (fr) * 1999-09-29 2001-11-02 Mitsubishi Electric Inf Tech Procede de transmission de donnees utilisateur et de donnees de controle sur des canaux d'un reseau de transmission
FI20031441A0 (fi) * 2003-10-03 2003-10-03 Nokia Corp Palautetietoa lähetyksen säätämiseksi tietoliikennejärjestelmässä
DE102004013884B4 (de) * 2004-03-22 2006-04-27 Deutsches Zentrum für Luft- und Raumfahrt e.V. Gesichertes Spread-Spectrum-Nachrichtenübertragungssystem

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH578807A5 (es) * 1974-11-05 1976-08-13 Patelhold Patentverwertung
US4285060A (en) * 1978-02-28 1981-08-18 Harris Corporation Spread spectrum code tracking loop
US5063571A (en) * 1989-12-27 1991-11-05 Nynex Corporation Method and apparatus for increasing the data rate for a given symbol rate in a spread spectrum system
US5025452A (en) * 1990-03-20 1991-06-18 Andrew Corporation Full-duplex, sub-band spread spectrum communications system

Also Published As

Publication number Publication date
EP0470352A1 (fr) 1992-02-12
FR2664113B1 (fr) 1993-06-04
US5170410A (en) 1992-12-08
DE69114075D1 (de) 1995-11-30
EP0470352B1 (fr) 1995-10-25
FR2664113A1 (fr) 1992-01-03
DE69114075T2 (de) 1996-04-04
CA2045881A1 (fr) 1991-12-29
CA2045881C (fr) 1994-12-27

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