MX9803385A - Receptor para acceso multiple de division de codigo. - Google Patents

Receptor para acceso multiple de division de codigo.

Info

Publication number
MX9803385A
MX9803385A MX9803385A MX9803385A MX9803385A MX 9803385 A MX9803385 A MX 9803385A MX 9803385 A MX9803385 A MX 9803385A MX 9803385 A MX9803385 A MX 9803385A MX 9803385 A MX9803385 A MX 9803385A
Authority
MX
Mexico
Prior art keywords
reception
timing
phase difference
cdma receiver
phase
Prior art date
Application number
MX9803385A
Other languages
English (en)
Other versions
MXPA98003385A (es
Inventor
Kazuhiro Umetsu
Original Assignee
Matsushita Electric Ind Co Ltd
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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of MX9803385A publication Critical patent/MX9803385A/es
Publication of MXPA98003385A publication Critical patent/MXPA98003385A/es

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
    • 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
    • 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

Landscapes

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

Abstract

En un receptor CDMA, un convertidor A/D que sobremuestrea una señal de base de banda de recepcion analogica con un reloj de muestreo una frecuencia la cual es 2" veces mayor que un reloj de chip, y la convierte en una señal de base de banda de recepcion digital. Un circuito de correlacion obtiene un valor de correlacion entre la señal de base de banda de recepcion digital y un codigo de difusion piloto el cual es sincronico con una sincronizacion de recepcion. Una unidad de deteccion de diferencia de fase obtiene una diferencia de fase entre la señal de base de banda de recepcion digital y la sincronizacion de recepcion en base al valor de correlacion. Una unidad de control de sincronizacion cambia la sincronizacion de recepcion de manera tal que elimina la diferencia de fase obtenida por la unidad de deteccion de diferencia de fase.
MXPA/A/1998/003385A 1997-04-30 1998-04-29 Receptor para acceso multiple de division de codigo MXPA98003385A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9124749A JPH10303782A (ja) 1997-04-30 1997-04-30 Ｃｄｍａ受信装置
JP09-124749 1997-04-30

Publications (2)

Publication Number Publication Date
MX9803385A true MX9803385A (es) 1998-12-31
MXPA98003385A MXPA98003385A (es) 1999-02-01

Family

ID=

Also Published As

Publication number Publication date
CA2236287A1 (en) 1998-10-30
CA2236287C (en) 2002-03-26
EP0876000A3 (en) 2000-11-02
KR19980081748A (ko) 1998-11-25
CN1097369C (zh) 2002-12-25
US6236648B1 (en) 2001-05-22
KR100294313B1 (ko) 2001-07-12
EP0876000A2 (en) 1998-11-04
CN1198626A (zh) 1998-11-11
JPH10303782A (ja) 1998-11-13

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Legal Events

Date Code Title Description
FG Grant or registration
MM Annulment or lapse due to non-payment of fees