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1. WO2012129768 - A METHOD FOR PRE-DISTORTING AND A PRE-DISTORTER

Publication Number WO/2012/129768
Publication Date 04.10.2012
International Application No. PCT/CN2011/072219
International Filing Date 28.03.2011
IPC
H03F 1/32 2006.01
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
CPC
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 1/3258
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
3258based on polynomial terms
H03F 3/189
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
189High frequency amplifiers, e.g. radio frequency amplifiers
H03F 3/24
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
24of transmitter output stages
H04B 7/0456
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
0413MIMO systems
0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
Applicants
  • ZTE CORPORATION [CN]/[CN] (AllExceptUS)
  • ZTE WISTRON TELECOM AB [SE]/[SE] (AllExceptUS)
  • PEROULAS, James [US]/[US] (UsOnly)
  • ZENG, Feng [CN]/[CN] (UsOnly)
  • NING, Dongfang [CN]/[CN] (UsOnly)
  • YANG, Zeliang [CN]/[CN] (UsOnly)
  • DUAN, Yijun [CN]/[CN] (UsOnly)
  • PAN, Weiming [CN]/[CN] (UsOnly)
  • DAI, Zhengjian [CN]/[CN] (UsOnly)
  • YOU, Aimin [CN]/[CN] (UsOnly)
Inventors
  • PEROULAS, James
  • ZENG, Feng
  • NING, Dongfang
  • YANG, Zeliang
  • DUAN, Yijun
  • PAN, Weiming
  • DAI, Zhengjian
  • YOU, Aimin
Agents
  • AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A METHOD FOR PRE-DISTORTING AND A PRE-DISTORTER
(FR) PROCÉDÉ DE PRÉDISTORSION ET UNITÉ DE PRÉDISTORSION
Abstract
(EN)
The present invention discloses a pre-distorter, which comprises: a pre-distortion module, which is configured to pre-distort a plurality of baseband input signals by an equal number of pre-distortion functions to obtain equal number of pre-distorted signals respectively, wherein all of the baseband input signals input into every pre-distortion function, and each pre-distortion function has one output; an adder, which is configured to combine all of the pre-distorted signals output from every pre-distortion functions into one combined signal; and a power amplifier (PA), which is configure to amplify the combined signal, wherein the cascade of the pre-distortion functions and the PA are linear overall. And the present invention also discloses a method for distorting. The present invention reduces the implementation cost of a pre-distorer.
(FR)
L'invention concerne une unité de prédistorsion qui comprend : un module de prédistorsion, configuré pour effectuer la prédistorsion d'une pluralité de signaux de bande de base en entrée au moyen d'un nombre égal de fonctions de prédistorsion afin d'obtenir un nombre égal de signaux prédistordus respectivement, tous les signaux de bande de base en entrée passant dans chaque fonction de prédistorsion, et chaque fonction de prédistorsion a une sortie; un additionneur qui est configuré pour combiner tous les signaux prédistordus produits par chaque fonction de prédistorsion en un seul signal combiné; et un amplificateur de puissance (PA) qui est configuré pour amplifier le signal combiné, la cascade des fonctions de prédistorsion et d'amplificateur de puissance étant généralement linéaire. La présente invention concerne aussi un procédé de distorsion et réduit les coûts de mise en œuvre d'un module de distorsion.
Also published as
GB1316943.8
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