CA2340644A1 - Procede et dispositif destine a un systeme capable de transmission radio duplex integral a acces cdma - Google Patents

Procede et dispositif destine a un systeme capable de transmission radio duplex integral a acces cdma Download PDF

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Publication number
CA2340644A1
CA2340644A1 CA002340644A CA2340644A CA2340644A1 CA 2340644 A1 CA2340644 A1 CA 2340644A1 CA 002340644 A CA002340644 A CA 002340644A CA 2340644 A CA2340644 A CA 2340644A CA 2340644 A1 CA2340644 A1 CA 2340644A1
Authority
CA
Canada
Prior art keywords
base station
radio base
subscriber
preamble
radio
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.)
Abandoned
Application number
CA002340644A
Other languages
English (en)
Inventor
Andreas Hachenberger
Klaus Jackel
Mathias Reibe
Reinhard Schiffel
Joachim Seidel
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.)
Q-CELL GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2340644A1 publication Critical patent/CA2340644A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions
    • 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
    • H04B2201/70707—Efficiency-related aspects
    • H04B2201/70709—Efficiency-related aspects with discontinuous detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

L'invention concerne un procédé et un dispositif de synchronisation destiné à un système de transmission radio duplex intégral exploité en duplex temporel. Le système comprend une station de base radio centrale et une pluralité de stations d'abonnés indépendantes les unes des autres. Chaque station d'abonné comporte, du côté réception, un filtre accordé auquel est connecté en aval un commutateur à seuil d'amplitude. Le procédé comprend les étapes suivantes: a) génération par la station de base d'une séquence maximale ou d'une séquence d'or spécifique de chaque système de transmission radio; b) envoi de ladite séquence, sous forme de préambule (1) précédant l'émission des données utiles (2), à toutes les stations d'abonnés; c) réception du préambule (1) par lesdites stations; d) transfert du préambule reçu (1) à l'entrée du filtre accordé correspondant; e) transmission du signal de sortie dudit filtre au commutateur à seuil d'amplitude; et f) génération par ledit commutateur d'un signal de déclenchement en cas de dépassement d'une valeur seuil Tr¿1? prédéfinie.
CA002340644A 1998-08-14 1999-08-03 Procede et dispositif destine a un systeme capable de transmission radio duplex integral a acces cdma Abandoned CA2340644A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19836888.7 1998-08-14
DE1998136888 DE19836888A1 (de) 1998-08-14 1998-08-14 Verfahren und Vorrichtung für ein voll duplexfähigesFunkübertragungssystem mit CDMA-Zugriff
PCT/EP1999/005619 WO2000010258A1 (fr) 1998-08-14 1999-08-03 Procede et dispositif destine a un systeme de transmission radio duplex integral a acces cdma

Publications (1)

Publication Number Publication Date
CA2340644A1 true CA2340644A1 (fr) 2000-02-24

Family

ID=7877537

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002340644A Abandoned CA2340644A1 (fr) 1998-08-14 1999-08-03 Procede et dispositif destine a un systeme capable de transmission radio duplex integral a acces cdma

Country Status (8)

Country Link
EP (1) EP1104595A1 (fr)
CN (1) CN1311925A (fr)
AR (1) AR025262A1 (fr)
AU (1) AU749693B2 (fr)
CA (1) CA2340644A1 (fr)
DE (1) DE19836888A1 (fr)
WO (1) WO2000010258A1 (fr)
ZA (1) ZA200101603B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106301465A (zh) * 2015-05-29 2017-01-04 中国移动通信集团公司 一种消除同频全双工系统自干扰的方法及装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10056086C2 (de) * 2000-11-07 2002-12-05 Iq Wireless Gmbh Verfahren für die Synchronisation in einem Funkkommunikationssystem
DE10126831B4 (de) * 2001-06-01 2007-08-02 Rohde & Schwarz Gmbh & Co Kg Verfahren zum Bestimmen des Zeitversatzes zwischen einem Trigger-Signal und der Pilotsequenz eines CDMA-Hochfrequenzsignals
US6944142B2 (en) * 2003-05-13 2005-09-13 Interdigital Technology Corporation Method for soft and softer handover in time division duplex code division multiple access (TDD-CDMA) networks

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5333402B2 (fr) * 1974-07-05 1978-09-13
DE3685216D1 (de) * 1986-08-14 1992-06-11 Standard Elektrik Lorenz Ag Digitales zellenfunksystem.
DE3743732C2 (de) * 1987-12-23 1994-12-01 Ant Nachrichtentech Verfahren zur Synchronisierung eines Codewortes mit einem empfangenen spektral gespreizten Signal
US5164958A (en) * 1991-05-22 1992-11-17 Cylink Corporation Spread spectrum cellular handoff method
JP3142222B2 (ja) * 1994-08-22 2001-03-07 松下電器産業株式会社 スペクトル拡散通信同期方法とその回路装置
BR9608548A (pt) * 1995-06-05 1999-07-06 Omnipoint Corp Controle de ajuste de sincronização para comunicação duplex por divisão de tempo eficiente
DE19533507C2 (de) * 1995-09-04 1997-10-02 Hartmut Dipl Ing Neus Multiplex-, Zugriffs- und Duplexverfahren für ein zellulares Funksystem
JPH09307951A (ja) * 1996-03-15 1997-11-28 Matsushita Electric Ind Co Ltd スペクトル拡散通信装置
US6259724B1 (en) * 1996-10-18 2001-07-10 Telefonaktiebolaget L M Ericsson (Publ) Random access in a mobile telecommunications system
JP3373746B2 (ja) * 1997-01-07 2003-02-04 株式会社鷹山 Ｄｓ−ｃｄｍａ基地局間非同期セルラ方式における初期同期方法および受信機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106301465A (zh) * 2015-05-29 2017-01-04 中国移动通信集团公司 一种消除同频全双工系统自干扰的方法及装置

Also Published As

Publication number Publication date
WO2000010258A1 (fr) 2000-02-24
EP1104595A1 (fr) 2001-06-06
ZA200101603B (en) 2001-07-13
AU749693B2 (en) 2002-07-04
AU5730599A (en) 2000-03-06
DE19836888A1 (de) 2000-02-24
AR025262A1 (es) 2002-11-20
CN1311925A (zh) 2001-09-05

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Legal Events

Date Code Title Description
FZDE Discontinued
FZDE Discontinued

Effective date: 20030804