AR025612A1 - Metodo y disposicion en un sistema de telecomunicaciones - Google Patents

Metodo y disposicion en un sistema de telecomunicaciones

Info

Publication number
AR025612A1
AR025612A1 ARP000104726A ARP000104726A AR025612A1 AR 025612 A1 AR025612 A1 AR 025612A1 AR P000104726 A ARP000104726 A AR P000104726A AR P000104726 A ARP000104726 A AR P000104726A AR 025612 A1 AR025612 A1 AR 025612A1
Authority
AR
Argentina
Prior art keywords
samples
demodulator
receiver
reducing
signal
Prior art date
Application number
ARP000104726A
Other languages
English (en)
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of AR025612A1 publication Critical patent/AR025612A1/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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H04B1/28—Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H04B1/0014—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage using DSP [Digital Signal Processor] quadrature modulation and demodulation
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
    • H04B1/0039—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage using DSP [Digital Signal Processor] quadrature modulation and demodulation
    • 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
    • H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Circuits Of Receivers In General (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La presente invencion se relaciona con un sistema de comunicacion de Acceso Multiple por Division de Codigo (CDMA), más particularmente a una disposicion ya un método en un receptor (10) para simplificar y mejorar el procesamiento de senal en undes modulador (11) del receptor (10) por medio de la reduccion delalcance dinámico de larga duracion de las senales recibidas, y de esta manera, reducir la cantidad de bits que se necesitan para la codificacion de dichassenales. Esto se logramediante me dios de procesamiento de senal (16) en las trayectorias de entrada de senal enfrente del desmodulador (11), dichos medios(16), que incluyen por lo menos una unidad digital de control de ganancia automático (161) mejorada, la cual integralas muestras de senal que ingresan a unnivel de potencia constante y comun, y que incluye una unidad de cuantificador subsiguiente (162), la cual transforma las muestras de senal integradas amuestras que utilizan una cantidad reducida de bits.Debido a esto, el ancho de banda de transmision en la unidad receptora es reducido y el procesamiento desenal en el desmodulador es menos complejo.
ARP000104726A 1999-09-10 2000-09-08 Metodo y disposicion en un sistema de telecomunicaciones AR025612A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9903235A SE9903235L (sv) 1999-09-10 1999-09-10 Förfarande och anordning i ett telekommunikationssystem

Publications (1)

Publication Number Publication Date
AR025612A1 true AR025612A1 (es) 2002-12-04

Family

ID=20416947

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP000104726A AR025612A1 (es) 1999-09-10 2000-09-08 Metodo y disposicion en un sistema de telecomunicaciones

Country Status (7)

Country Link
JP (1) JP4488332B2 (es)
AR (1) AR025612A1 (es)
AU (1) AU7464100A (es)
GB (1) GB2374216B (es)
SE (1) SE9903235L (es)
TW (1) TW507429B (es)
WO (1) WO2001020807A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006077830A1 (ja) 2005-01-18 2006-07-27 Ntt Docomo, Inc. 移動通信端末および移動通信端末に搭載される複数の受信装置を制御する方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5299226A (en) * 1990-11-16 1994-03-29 Interdigital Technology Corporation Adaptive power control for a spread spectrum communications system and method
US5566201A (en) * 1994-09-27 1996-10-15 Nokia Mobile Phones Ltd. Digital AGC for a CDMA radiotelephone
US5574747A (en) * 1995-01-04 1996-11-12 Interdigital Technology Corporation Spread spectrum adaptive power control system and method
JPH08335928A (ja) * 1995-06-07 1996-12-17 Oki Electric Ind Co Ltd 受信装置
EP0923823B1 (en) * 1996-09-02 2002-11-13 STMicroelectronics N.V. Improvements in, or relating to, multi-carrier transmission systems
JP2970550B2 (ja) * 1996-09-13 1999-11-02 日本電気株式会社 一括分波回路
JPH10112682A (ja) * 1996-10-03 1998-04-28 Canon Inc 無線通信システム、その送信電力制御方法および基地局

Also Published As

Publication number Publication date
AU7464100A (en) 2001-04-17
SE9903235L (sv) 2001-03-11
GB2374216B (en) 2004-04-14
SE9903235D0 (sv) 1999-09-10
GB2374216A (en) 2002-10-09
JP4488332B2 (ja) 2010-06-23
TW507429B (en) 2002-10-21
WO2001020807A1 (en) 2001-03-22
GB0204011D0 (en) 2002-04-03
JP2003509949A (ja) 2003-03-11

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