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1. WO2006125398 - BASEBAND SIGNAL PREDISTORTION PROCESSING DEVICE AND METHOD

Publication Number WO/2006/125398
Publication Date 30.11.2006
International Application No. PCT/CN2006/001117
International Filing Date 26.05.2006
IPC
H04B 1/62 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
62for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
CPC
H03F 1/3241
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
32Modifications of amplifiers to reduce non-linear distortion
3241using predistortion circuits
H03F 1/3247
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
32Modifications of amplifiers to reduce non-linear distortion
3241using predistortion circuits
3247using feedback acting on predistortion circuits
H03F 1/3294
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
32Modifications of amplifiers to reduce non-linear distortion
3241using predistortion circuits
3294Acting on the real and imaginary components of the input signal
H03F 1/52
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
52Circuit arrangements for protecting such amplifiers
H04B 2001/0425
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
02Transmitters
04Circuits
0408with power amplifiers
0425with linearisation using predistortion
Applicants
  • 华为技术有限公司 HUAWEI TECHNOLOGIES CO., LTD. [CN]/[CN] (AllExceptUS)
  • 邓杰锋 DENG, Jiefeng [CN]/[CN] (UsOnly)
  • 朱尔霓 ZHU, Erni [CN]/[CN] (UsOnly)
  • 杜勇 DU, Yong [CN]/[CN] (UsOnly)
Inventors
  • 邓杰锋 DENG, Jiefeng
  • 朱尔霓 ZHU, Erni
  • 杜勇 DU, Yong
Agents
  • 北京集佳知识产权代理有限公司 UNITALEN ATTORNEYS AT LAW
Priority Data
200510073002.427.05.2005CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) BASEBAND SIGNAL PREDISTORTION PROCESSING DEVICE AND METHOD
(FR) DISPOSITIF ET PROCEDE DE TRAITEMENT DE PREDISTORSION DE SIGNAL DE BANDE DE BASE
(ZH) 基带数字信号预失真处理装置及方法
Abstract
(EN) A baseband signal predistortion processing device and method. Said device includes: a predistorter, for preserving and updating nonlinear filter parameter, carrying out power statistic of input signals, selecting corresponding nonlinear filter parameter according to the power statistical result and predistortion-processing baseband digital signals by use of said corresponding nonlinear filter parameter, and outputting the predistortion processed baseband digital signals; an adaptive parameter calculating unit, for calculating nonlinear filter parameter according to received feedback signals of radio-frequency channel and sampled signals of baseband digital signals, and transmitting the calculating result to the predistorter. Said method can not only solve the nonlinear problem of power amplifier, but also can select different non-linearity inverse model according to different input signal and power amplifier characteristic, and increase whole efficiency of base station transmitter.
(FR) La présente invention concerne un dispositif et un procédé de traitement de prédistorsion de signal de bande de base. Ledit dispositif comprend : un prédistorseur, pour préserver et actualiser le paramètre de filtre non linéaire, réaliser les statistiques d'énergie des signaux d'entrée, sélectionner le paramètre de filtre non linéaire correspondant en fonction du résultat statistique de l'énergie et traiter la prédistorsion des signaux numériques de bande de base en utilisant ledit paramètre de filtre non linéaire correspondant et produire les signaux numériques de bande de base de prédistorsion ; il comprend également une unité de calcul de paramètre adaptatif, pour calculer le paramètre de filtre non linéaire en fonction des signaux de retour reçus du canal haute fréquence et des signaux échantillonnés des signaux numériques de bande de base et transmettre le résultat du calcul au prédistorseur. Ledit procédé peut non seulement résoudre le problème non linéaire de l'amplificateur de puissance, mais aussi sélectionner un modèle inverse non linéaire différent, en fonction d'un signal d'entrée différent et des caractéristiques d'un amplificateur de puissance, et augmenter l'efficacité générale du transmetteur de station de base.
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