ES2131648T3 - Procedimiento de sincronizacion para comunicaciones radiotelefonicas con acceso multiple y reparto por codigos. - Google Patents

Procedimiento de sincronizacion para comunicaciones radiotelefonicas con acceso multiple y reparto por codigos.

Info

Publication number
ES2131648T3
ES2131648T3 ES94401338T ES94401338T ES2131648T3 ES 2131648 T3 ES2131648 T3 ES 2131648T3 ES 94401338 T ES94401338 T ES 94401338T ES 94401338 T ES94401338 T ES 94401338T ES 2131648 T3 ES2131648 T3 ES 2131648T3
Authority
ES
Spain
Prior art keywords
designates
verified
sequence
synchronization procedure
codes
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
ES94401338T
Other languages
English (en)
Inventor
Philippe Lucas
Philippe Mege
Stephane Pineau
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.)
Nortel Networks France SAS
Original Assignee
Matra Nortel Communications SAS
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 Matra Nortel Communications SAS filed Critical Matra Nortel Communications SAS
Application granted granted Critical
Publication of ES2131648T3 publication Critical patent/ES2131648T3/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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70755—Setting of lock conditions, e.g. threshold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
    • H04W56/0065—Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
    • H04W56/007—Open loop measurement
    • H04W56/0075—Open loop measurement based on arrival time vs. expected arrival time
    • H04W56/0085—Open loop measurement based on arrival time vs. expected arrival time detecting a given structure in the signal
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7087—Carrier synchronisation aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface

Landscapes

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

Abstract

EL PROCEDIMIENTO DE SINCRONIZACION CONSISTE EN SELECCIONAR, AL NIVEL DE UNA ESTACION MOVIL, AL MENOS UNA SECUENCIA PERIODICA SEUDO ALEATORIA (PN) QUE CORRESPONDA Y ESTE SINCRONIZADA CON LA SECUENCIA DE REFERENCIA EMITIDA POR UNA ESTACION DE BASE SOBRE UN CANAL PILOTO, Y SE RECIBA POR LA ESTACION MOVIL SIGUIENDO UNA TRAYECTORIA DE PROPAGACION SEA CUAL SEA LA SEPARACION DE FRECUENCIA ENTRE EL EMISOR Y EL RECEPTOR. SE VERIFICAN DIFERENTES SECUENCIAS POSIBLES CALCULANDO LAS CANTIDADES E[S(T).S*(T-]) Y E[S(T).S*(T)], DONDE E[.] DESIGNA EL VALOR MEDIO CALCULADO SOBRE UN TIEMPO DE INTEGRACION PREDETERMINADO, DESIGNA UN RETRASO PREDETERMINADO Y S(T) = R(T).C(T) DESIGNA EL PRODUCTO DE LA SEÑAL RECIBIDA EN BANDA DE BASE (R(T)) POR EL VALOR (C(T)) DE LA SECUENCIA VERIFICADA Y CALCULANDO LA RELACION E[S(T).S*(T])/E[S(T).S*(T)]. SE SELECCIONA LA SECUENCIA VERIFICADA SI DICHA RELACION SUPERA UN UMBRAL PREDETERMINADO.
ES94401338T 1993-06-16 1994-06-15 Procedimiento de sincronizacion para comunicaciones radiotelefonicas con acceso multiple y reparto por codigos. Expired - Lifetime ES2131648T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9307269A FR2706709B1 (fr) 1993-06-16 1993-06-16 Procédé de synchronisation pour des communications radiotéléphoniques à accès multiple à répartition par codes.

Publications (1)

Publication Number Publication Date
ES2131648T3 true ES2131648T3 (es) 1999-08-01

Family

ID=9448205

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94401338T Expired - Lifetime ES2131648T3 (es) 1993-06-16 1994-06-15 Procedimiento de sincronizacion para comunicaciones radiotelefonicas con acceso multiple y reparto por codigos.

Country Status (10)

Country Link
US (1) US5544155A (es)
EP (1) EP0630120B1 (es)
JP (1) JP3454569B2 (es)
AT (1) ATE179038T1 (es)
CA (1) CA2125831C (es)
DE (1) DE69417803T2 (es)
ES (1) ES2131648T3 (es)
FI (1) FI942831A7 (es)
FR (1) FR2706709B1 (es)
GR (1) GR3030478T3 (es)

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JP2784901B2 (ja) * 1995-06-02 1998-08-13 日本無線株式会社 スペクトラム拡散／デマンドアサイメント多元接続方式における通信方法、およびそれに使用される通信装置
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FR2737362B1 (fr) 1995-07-25 1997-10-10 Matra Communication Procede de selection des retards de propagation retenus pour recevoir des messages transmis par radiocommunication a etalement de spectre
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JP3681230B2 (ja) * 1996-07-30 2005-08-10 松下電器産業株式会社 スペクトル拡散通信装置
US5784366A (en) * 1996-08-27 1998-07-21 Transsky Corp. Wideband code-division-multiple access system and method
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IL119752A0 (en) * 1996-12-04 1997-09-30 Israel State Asynchronous CDMA decorrelating detector
US5943375A (en) * 1997-02-06 1999-08-24 At&T Wireless Services Inc. Method to indicate synchronization lock of a remote station with a base station
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US20020051434A1 (en) * 1997-10-23 2002-05-02 Ozluturk Fatih M. Method for using rapid acquisition spreading codes for spread-spectrum communications
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JP3028800B2 (ja) * 1998-05-01 2000-04-04 日本電気株式会社 Ｃｄｍａセルラシステム及びｃｄｍａセルラシステムにおける拡散符号検出方法
US6278699B1 (en) * 1998-06-22 2001-08-21 Telefonaktiebolaget Lm Ericsson (Publ) Synchronization techniques and systems for spread spectrum radiocommunication
US6314128B1 (en) 1998-07-17 2001-11-06 World Wireless Communications, Inc. Spread spectrum synchronized receiver and synchronizing methods
FR2783113B1 (fr) * 1998-09-04 2006-08-04 Commissariat Energie Atomique Procede de reception de signaux amrc avec synchronisation obtenue par double multiplication retardee et recepteur correspondant
KR100401190B1 (ko) * 1998-09-17 2003-12-31 삼성전자주식회사 부호분할다중접속통신시스템의동기채널을이용한프레임동기장치및방법
US6625200B1 (en) * 1999-01-25 2003-09-23 Ericsson Inc. Multi-stage CDMA synchronization with parallel execution
US6549564B1 (en) * 1999-04-08 2003-04-15 Telefonaktiebolaget Lm Ericsson (Publ) Random access in a mobile telecommunications system
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US6553230B1 (en) * 1999-04-16 2003-04-22 Nortel Networks Limited Method and apparatus for performing soft handoff between cells of large differing radii
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TW463481B (en) * 1999-04-28 2001-11-11 Fujitsu Ltd Cell search method, communication synchronization apparatus, portable terminal apparatus, and recording medium
FR2813474B1 (fr) * 2000-08-28 2002-12-13 Commissariat Energie Atomique Procede de reception non coherente dp-mok avec combinaison de trajets multiples et recepteur correspondant
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DE10102709B4 (de) * 2001-01-22 2014-02-06 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zur Synchronisation auf eine Pilotsequenz eines CDMA-Signals
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CN105553599B (zh) * 2016-01-26 2017-10-17 北京浩瀚深度信息技术股份有限公司 网络对时的误差修正方法
FR3052311B1 (fr) * 2016-06-06 2019-08-02 Airbus Ds Slc Dispositif et procede pour le traitement d'un signal recu par un recepteur perturbe par un emetteur

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Also Published As

Publication number Publication date
ATE179038T1 (de) 1999-04-15
DE69417803T2 (de) 1999-11-18
US5544155A (en) 1996-08-06
DE69417803D1 (de) 1999-05-20
FI942831A0 (fi) 1994-06-15
EP0630120B1 (fr) 1999-04-14
JP3454569B2 (ja) 2003-10-06
CA2125831C (en) 2002-11-12
FR2706709B1 (fr) 1995-08-25
JPH0750651A (ja) 1995-02-21
EP0630120A1 (fr) 1994-12-21
CA2125831A1 (en) 1994-12-17
GR3030478T3 (en) 1999-10-29
FR2706709A1 (fr) 1994-12-23
FI942831A7 (fi) 1994-12-17

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