AR009797A1 - Radiotelefono configurado para recibir senales de ds-cdma en un sistema de comunicaciones. - Google Patents

Radiotelefono configurado para recibir senales de ds-cdma en un sistema de comunicaciones.

Info

Publication number
AR009797A1
AR009797A1 ARP970104283A ARP970104283A AR009797A1 AR 009797 A1 AR009797 A1 AR 009797A1 AR P970104283 A ARP970104283 A AR P970104283A AR P970104283 A ARP970104283 A AR P970104283A AR 009797 A1 AR009797 A1 AR 009797A1
Authority
AR
Argentina
Prior art keywords
radio telephone
sequence
receive
communications system
cdma signals
Prior art date
Application number
ARP970104283A
Other languages
English (en)
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of AR009797A1 publication Critical patent/AR009797A1/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
    • H04B1/76—Pilot transmitters or receivers for control of transmission or for equalising
    • 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
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H04B7/2637—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for logical channel control

Landscapes

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

Abstract

El rendimiento de un radioteléfono (104) en un sistema de comunicaciones de CDMA (100) se amplia usando un buscador receptor (114) que incluye unfiltro adaptado (128) para capturar las energías piloto de todas las transmisiones recibibl es de unaestacion de base (102) y otras estaciones debase cercanas. Una secuencia de PN detectada se compara con una secuencia de PN almacenada en el radioteléfono (104). La secuencia de PN predeterminadaincluye por ejemplo, los ultimos 512 chips en lasecuencia de PN corta usada para ensanchar el canal en fase y el canal en cuadratura-fase.
ARP970104283A 1996-10-29 1997-09-18 Radiotelefono configurado para recibir senales de ds-cdma en un sistema de comunicaciones. AR009797A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/741,183 US5950131A (en) 1996-10-29 1996-10-29 Method and apparatus for fast pilot channel acquisition using a matched filter in a CDMA radiotelephone

Publications (1)

Publication Number Publication Date
AR009797A1 true AR009797A1 (es) 2000-05-03

Family

ID=24979714

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP970104283A AR009797A1 (es) 1996-10-29 1997-09-18 Radiotelefono configurado para recibir senales de ds-cdma en un sistema de comunicaciones.

Country Status (9)

Country Link
US (1) US5950131A (es)
JP (1) JP4057111B2 (es)
KR (1) KR100253104B1 (es)
CN (1) CN1086541C (es)
AR (1) AR009797A1 (es)
BR (1) BR9705310A (es)
CA (1) CA2213960C (es)
DE (1) DE19745432C2 (es)
GB (1) GB2318952B (es)

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Also Published As

Publication number Publication date
KR19980033222A (ko) 1998-07-25
KR100253104B1 (ko) 2000-04-15
CN1086541C (zh) 2002-06-19
JPH10145333A (ja) 1998-05-29
DE19745432A1 (de) 1998-05-07
CN1185705A (zh) 1998-06-24
GB2318952A (en) 1998-05-06
JP4057111B2 (ja) 2008-03-05
DE19745432C2 (de) 2001-05-03
CA2213960C (en) 2001-01-02
GB9720012D0 (en) 1997-11-19
BR9705310A (pt) 2001-03-20
GB2318952B (en) 2001-06-20
US5950131A (en) 1999-09-07

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