AR025262A1 - Procedimiento y dispositivo para un sistema de radiotransmision con capacidad duplex completa y con acceso cdma. - Google Patents

Procedimiento y dispositivo para un sistema de radiotransmision con capacidad duplex completa y con acceso cdma.

Info

Publication number
AR025262A1
AR025262A1 ARP990104037A AR025262A1 AR 025262 A1 AR025262 A1 AR 025262A1 AR P990104037 A ARP990104037 A AR P990104037A AR 025262 A1 AR025262 A1 AR 025262A1
Authority
AR
Argentina
Prior art keywords
preamble
stations
paid
sequence
matched filter
Prior art date
Application number
Other languages
English (en)
Original Assignee
Kroth Rogerio
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 Kroth Rogerio filed Critical Kroth Rogerio
Publication of AR025262A1 publication Critical patent/AR025262A1/es

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

Un proceso y un dispositivo de sincronizacion en un sistema de transmision por radio con capacidad duplex completa, con acceso CDMA y con funcionamientoTDD, consistente en una estacion central de radio y una serie de estaciones abonadas independientes entre sí, teniendo cada una de ellas asignado en la partede recepcion un filtro adaptado (Matched Filter) con un conmutador de valor límite de amplitud conectado a continuacion. El procedimiento se compone de lospasos siguientes: a)Generacion por parte de la estacion de radio central de una secuencia máxima o secuencia de oro específica para cada sistema deradiotransmision. b)Envío como preámbulo (1)de la secuencia máxima o secuencia de oro a todas las estaciones abonadas, antes de la verdadera transmision dedatos utiles (2). c)Recepcion del preámbulo (1) por parte de las estaciones abonadas. d)Envio del preámbulo (1) a la entrada del Matched Filter de la estacionabonada correspondiente. e)Transmision de la senal de salida del Matched Filter al conmutador de valor umbral de la amplitud. f) Y generacion de una senal deactivacion por parte del conmutador de valor umbral cuando la amplitud sobrepasa un valor límite Tr1 previamente determinado.
ARP990104037 1998-08-14 1999-08-12 Procedimiento y dispositivo para un sistema de radiotransmision con capacidad duplex completa y con acceso cdma. AR025262A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1998136888 DE19836888A1 (de) 1998-08-14 1998-08-14 Verfahren und Vorrichtung für ein voll duplexfähigesFunkübertragungssystem mit CDMA-Zugriff

Publications (1)

Publication Number Publication Date
AR025262A1 true AR025262A1 (es) 2002-11-20

Family

ID=7877537

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP990104037 AR025262A1 (es) 1998-08-14 1999-08-12 Procedimiento y dispositivo para un sistema de radiotransmision con capacidad duplex completa y con acceso cdma.

Country Status (8)

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

Families Citing this family (4)

* 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
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

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5333402B2 (es) * 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
CA2223321A1 (en) * 1995-06-05 1996-12-12 Omnipoint Corporation Timing adjustment control for efficient time division duplex communication
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

Also Published As

Publication number Publication date
ZA200101603B (en) 2001-07-13
CA2340644A1 (en) 2000-02-24
AU5730599A (en) 2000-03-06
DE19836888A1 (de) 2000-02-24
CN1311925A (zh) 2001-09-05
EP1104595A1 (de) 2001-06-06
AU749693B2 (en) 2002-07-04
WO2000010258A1 (de) 2000-02-24

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