MX9702273A - Metodo y aparato para desmodulacion y deteccion de bits de control de potencia en un sistema de comunicaciones de espectro extendido. - Google Patents

Metodo y aparato para desmodulacion y deteccion de bits de control de potencia en un sistema de comunicaciones de espectro extendido.

Info

Publication number
MX9702273A
MX9702273A MX9702273A MX9702273A MX9702273A MX 9702273 A MX9702273 A MX 9702273A MX 9702273 A MX9702273 A MX 9702273A MX 9702273 A MX9702273 A MX 9702273A MX 9702273 A MX9702273 A MX 9702273A
Authority
MX
Mexico
Prior art keywords
channel
power control
spread spectrum
demodulation
spectrum communication
Prior art date
Application number
MX9702273A
Other languages
English (en)
Other versions
MXPA97002273A (es
Inventor
Fuyun Ling
David E Borth
Colin D Frank
Phillip D Rasky
James F Kepler
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 MXPA97002273A publication Critical patent/MXPA97002273A/es
Publication of MX9702273A publication Critical patent/MX9702273A/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
    • H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
    • H04W52/60—Signalisation aspects of the TPC commands, e.g. frame structure using different transmission rates for TPC commands
    • 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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response
    • H04L25/0214—Channel estimation of impulse response of a single coefficient
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

Un circuito receptor (400, 500) recibe una señal de comunicaciones de espectro extendido, por ejemplo una señal de DS-CDMA, que incluye un canal piloto y un asignador de control de potencia. La señal es reducida y decodificada. Los símbolos piloto en el canal piloto son provistos a un estimador de canal (408) para estimar la fase de canal y la ganancia de canal del canal de comunicaciones. Esta estimacion es provista a un desmodulador (422) para desmodular los símbolos de canal de tráfico. Los símbolos piloto son provistos a otro estimador de canal (410) para estimar la fase de canal y la ganancia de canal para el asignador de control de potencia. Esta estimacion es provista a un desmodulador (424) para desmodular el asignador de control de potencia. Los símbolos de canal de tráfico son retardados un tiempo predeterminado en un elemento de retardo (420) antes de su desmodulacion. El asignador de control de potencia es retardado un breve lapso o no es retardado en absoluto en un elemento de retardo corto (418) antes de su desmodulacion.
MX9702273A 1996-03-29 1997-03-26 Metodo y aparato para desmodulacion y deteccion de bits de control de potencia en un sistema de comunicaciones de espectro extendido. MX9702273A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/624,329 US5737327A (en) 1996-03-29 1996-03-29 Method and apparatus for demodulation and power control bit detection in a spread spectrum communication system
US08624329 1996-03-29

Publications (2)

Publication Number Publication Date
MXPA97002273A MXPA97002273A (es) 1998-04-01
MX9702273A true MX9702273A (es) 1998-04-30

Family

ID=24501573

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9702273A MX9702273A (es) 1996-03-29 1997-03-26 Metodo y aparato para desmodulacion y deteccion de bits de control de potencia en un sistema de comunicaciones de espectro extendido.

Country Status (9)

Country Link
US (1) US5737327A (es)
JP (1) JP3091711B2 (es)
KR (1) KR100243720B1 (es)
CN (1) CN1084092C (es)
AR (1) AR006417A1 (es)
DE (2) DE19758850B4 (es)
FR (1) FR2746990B1 (es)
GB (1) GB2311702B (es)
MX (1) MX9702273A (es)

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Also Published As

Publication number Publication date
KR100243720B1 (ko) 2000-02-01
FR2746990A1 (fr) 1997-10-03
GB2311702A (en) 1997-10-01
CN1185063A (zh) 1998-06-17
AR006417A1 (es) 1999-08-25
GB2311702B (en) 2000-07-26
DE19712830A1 (de) 1997-11-06
FR2746990B1 (fr) 2001-10-26
US5737327A (en) 1998-04-07
KR970068220A (ko) 1997-10-13
DE19712830B4 (de) 2005-12-08
GB9705960D0 (en) 1997-05-07
CN1084092C (zh) 2002-05-01
JP3091711B2 (ja) 2000-09-25
DE19758850B4 (de) 2015-01-22
JPH1032560A (ja) 1998-02-03

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