BRPI0407127A - Método e equipamento para controle de ganho automático de um sinal de multiportadora em um receptor de comunicação - Google Patents

Método e equipamento para controle de ganho automático de um sinal de multiportadora em um receptor de comunicação

Info

Publication number
BRPI0407127A
BRPI0407127A BR0407127-1A BRPI0407127A BRPI0407127A BR PI0407127 A BRPI0407127 A BR PI0407127A BR PI0407127 A BRPI0407127 A BR PI0407127A BR PI0407127 A BRPI0407127 A BR PI0407127A
Authority
BR
Brazil
Prior art keywords
bits
outer loop
agc
equipment
gain control
Prior art date
Application number
BR0407127-1A
Other languages
English (en)
Inventor
Juan Montojo
Rohan Sudhakar Salvi
Peter J Black
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BRPI0407127A publication Critical patent/BRPI0407127A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/08—Amplitude regulation arrangements
    • 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
    • H03G3/3078—Circuits generating control signals for digitally modulated signals
    • 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
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
    • H03M1/181—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values
    • H03M1/183—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the gain of an amplifier or attenuator preceding the analogue/digital converter
    • H03M1/185—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the gain of an amplifier or attenuator preceding the analogue/digital converter the determination of the range being based on more than one digital output value, e.g. on a running average, a power estimation or the rate of change
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0002—Modulated-carrier systems analog front ends; means for connecting modulators, demodulators or transceivers to a transmission line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/28—Systems using multi-frequency codes with simultaneous transmission of different frequencies each representing one code element
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Theoretical Computer Science (AREA)
  • Circuits Of Receivers In General (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

"MéTODO E EQUIPAMENTO PARA CONTROLE DE GANHO AUTOMáTICO DE UM SINAL DE MULTIPORTADORA EM UM RECEPTOR DE COMUNICAçãO". Um receptor opera para AGC um sinal de multiportadora através de um número correspondente de malhas internas e processos AGC de malha externa. Um primeiro número de bits para representar o sinal de multiportadora com uma quantidade limitada de interferência é determinado através de um processo de modo de calibragem. o primeiro número de bits fornece a quantização do sinal de multiportadora em um AGC de malha externa para um nível máximo de quantização. Depois de a estimativa de potência de sinal recebido ter alcançado um limite predeterminado 'LIGADO', o AGC de malha externa é operado em um segundo número de bits superior ao primeiro número de bits para permitir uma quantização de possível interferência de acordo com uma diferença do primeiro e segundo números de bits. O AGC de malha externa comuta de volta para o uso do primeiro número de bits quando a estimativa de potência do sinal recebido cai abaixo de um limite 'DESLIGADO' predeterminado.
BR0407127-1A 2003-02-01 2004-02-02 Método e equipamento para controle de ganho automático de um sinal de multiportadora em um receptor de comunicação BRPI0407127A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US44428303P 2003-02-01 2003-02-01
US10/437,203 US7995684B2 (en) 2003-02-01 2003-05-12 Method and apparatus for automatic gain control of a multi-carrier signal in a communication receiver
PCT/US2004/002927 WO2004071005A1 (en) 2003-02-01 2004-02-02 Method and apparatus for automatic gain control of a multi-carrier signal in a communication receiver

Publications (1)

Publication Number Publication Date
BRPI0407127A true BRPI0407127A (pt) 2006-01-10

Family

ID=32775969

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0407127-1A BRPI0407127A (pt) 2003-02-01 2004-02-02 Método e equipamento para controle de ganho automático de um sinal de multiportadora em um receptor de comunicação

Country Status (11)

Country Link
US (1) US7995684B2 (pt)
EP (1) EP1588517B1 (pt)
JP (1) JP4643557B2 (pt)
KR (1) KR101040548B1 (pt)
CN (1) CN1757194B (pt)
AT (1) ATE368978T1 (pt)
BR (1) BRPI0407127A (pt)
CA (1) CA2514884A1 (pt)
DE (1) DE602004007887T2 (pt)
MX (1) MXPA05008215A (pt)
WO (1) WO2004071005A1 (pt)

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Also Published As

Publication number Publication date
DE602004007887D1 (de) 2007-09-13
MXPA05008215A (es) 2005-11-04
EP1588517A1 (en) 2005-10-26
DE602004007887T2 (de) 2008-04-17
CN1757194B (zh) 2010-09-29
CA2514884A1 (en) 2004-08-19
CN1757194A (zh) 2006-04-05
JP2006517770A (ja) 2006-07-27
EP1588517B1 (en) 2007-08-01
KR101040548B1 (ko) 2011-06-16
ATE368978T1 (de) 2007-08-15
US20040151264A1 (en) 2004-08-05
WO2004071005A1 (en) 2004-08-19
JP4643557B2 (ja) 2011-03-02
US7995684B2 (en) 2011-08-09
KR20050096967A (ko) 2005-10-06

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Legal Events

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B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

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B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2159 DE 22/05/2012.