AR006417A1 - 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
AR006417A1
AR006417A1 ARP970101233A ARP970101233A AR006417A1 AR 006417 A1 AR006417 A1 AR 006417A1 AR P970101233 A ARP970101233 A AR P970101233A AR P970101233 A ARP970101233 A AR P970101233A AR 006417 A1 AR006417 A1 AR 006417A1
Authority
AR
Argentina
Prior art keywords
channel
power control
estimate
demodulation
detection
Prior art date
Application number
ARP970101233A
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 AR006417A1 publication Critical patent/AR006417A1/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 senal de comunicaciones de espectro extendido, por ejemplo una senal de comunicaciones de espectroextendido, por ejemplo una senal de DS-CDMA, que incluye un canal piloto y un asignador de controlde potencia. La senal es reducida y decodificada. Lossímbolos piloto en el canal piloto son provistos a un estimador de canal (408) para estimar la fase de canal y la ganancia de canal de comunicaciones. Estaestimación es provista a un desmodulador(4 22) para desmodular los símbolos de canal de tráfico. Los símbolos piloto son provistos a otro estimadorde canal (410) para estimar la fase de canal y la ganancia de canal para el asignador de control de potencia. Esta estimación esprovista a undesmodulador (424) para desmodular el asignador de control de potencia. Los símbolos de canal de tráfico son retardados un tiempo predeterminado en unelemento de retardo (420) antes de su desmodulación. El asignador de control depotencia es retardado un breve lapso o no es retardado en absoluto en unelemento de retardo corto (418) antes de su desmodulación.
ARP970101233A 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 AR006417A1 (es)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
AR006417A1 true AR006417A1 (es) 1999-08-25

Family

ID=24501573

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP970101233A AR006417A1 (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) DE19712830B4 (es)
FR (1) FR2746990B1 (es)
GB (1) GB2311702B (es)
MX (1) MX9702273A (es)

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Also Published As

Publication number Publication date
US5737327A (en) 1998-04-07
JP3091711B2 (ja) 2000-09-25
FR2746990B1 (fr) 2001-10-26
KR970068220A (ko) 1997-10-13
KR100243720B1 (ko) 2000-02-01
DE19712830B4 (de) 2005-12-08
JPH1032560A (ja) 1998-02-03
GB2311702A (en) 1997-10-01
CN1185063A (zh) 1998-06-17
FR2746990A1 (fr) 1997-10-03
DE19712830A1 (de) 1997-11-06
GB2311702B (en) 2000-07-26
MX9702273A (es) 1998-04-30
CN1084092C (zh) 2002-05-01
GB9705960D0 (en) 1997-05-07
DE19758850B4 (de) 2015-01-22

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