BR9906677A - Aparelho e processo para linearizar um amplificador em um sistema de comunicação de radio móvel - Google Patents

Aparelho e processo para linearizar um amplificador em um sistema de comunicação de radio móvel

Info

Publication number
BR9906677A
BR9906677A BR9906677-7A BR9906677A BR9906677A BR 9906677 A BR9906677 A BR 9906677A BR 9906677 A BR9906677 A BR 9906677A BR 9906677 A BR9906677 A BR 9906677A
Authority
BR
Brazil
Prior art keywords
lookup table
predistortion
data
feedforward
error
Prior art date
Application number
BR9906677-7A
Other languages
English (en)
Inventor
Ji-Won Ha
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of BR9906677A publication Critical patent/BR9906677A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
    • H03D7/168—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages using a feedback loop containing mixers or demodulators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/336—A I/Q, i.e. phase quadrature, modulator or demodulator being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3233—Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

"APARELHO E PROCESSO PARA LINEARIZAR UM AMPLIFICADOR EM UM SISTEMA DE COMUNICAçãO DE RADIO MóVEL". Um aparelho e processo são providos para linearizar a característica de um amplificador de potência no sistema de comunicação de rádio móvel, pela compensação da característica não-linear dos elementos ativos incluídos em um estágio de transmissão do sistema. O aparelho inclui um detetor de erro para detectar um erro entre sinais de entrada e de saída do amplificador de potência, pela comparação do sinal de saída retro-alimentado, com o sinal de entrada, uma tabela de consulta de diagrama de bloco para armazenar dados de diagrama de bloco, um controlador de tabela de consulta de diagrama de bloco para atualizar os dados da tabela de consulta de diagrama de bloco que correspondem à posição dos dados de entrada presentes pela adição de um sinal de erro do detetor de erro a uma saída da tabela de consulta de diagrama de bloco, uma tabela de consulta de alimentação avante para armazenar dados de controle de alimentação avante, um controlador de tabela de consulta de alimentação avante para produzir dados correspondentes de controle de alimentação avante da tabela de consulta de alimentação avante pela detecção de um tamanho do sinal de erro, um linearizador para distorcer o sinal de entrada de acordo com os dados de diagrama de bloco e, depois, controlar um ganho do sinal de entrada de acordo com os dados de controle de alimentação avante, e o amplificador de potência para amplificar a potência de uma saída do linearizador.
BR9906677-7A 1998-08-06 1999-08-05 Aparelho e processo para linearizar um amplificador em um sistema de comunicação de radio móvel BR9906677A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019980032029A KR100326176B1 (ko) 1998-08-06 1998-08-06 이동통신시스템의전력증폭장치및방법
PCT/KR1999/000435 WO2000008870A2 (en) 1998-08-06 1999-08-05 Apparatus and method of linearizing a power amplifier in a mobile radio communication system

Publications (1)

Publication Number Publication Date
BR9906677A true BR9906677A (pt) 2001-01-16

Family

ID=19546597

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9906677-7A BR9906677A (pt) 1998-08-06 1999-08-05 Aparelho e processo para linearizar um amplificador em um sistema de comunicação de radio móvel

Country Status (8)

Country Link
US (1) US6240144B1 (pt)
EP (1) EP1048176B1 (pt)
JP (1) JP3447266B2 (pt)
KR (1) KR100326176B1 (pt)
CN (1) CN1130819C (pt)
AT (1) ATE548858T1 (pt)
BR (1) BR9906677A (pt)
WO (1) WO2000008870A2 (pt)

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Also Published As

Publication number Publication date
EP1048176B1 (en) 2012-03-07
US6240144B1 (en) 2001-05-29
WO2000008870A2 (en) 2000-02-17
CN1130819C (zh) 2003-12-10
JP3447266B2 (ja) 2003-09-16
CN1302476A (zh) 2001-07-04
KR100326176B1 (ko) 2002-04-17
EP1048176A2 (en) 2000-11-02
WO2000008870A3 (en) 2000-05-18
KR20000013266A (ko) 2000-03-06
JP2002522989A (ja) 2002-07-23
ATE548858T1 (de) 2012-03-15

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