Adaptive Predistortion Techniques Based on Block-Oriented Model

doi:10.3696/j.issn.1672-6952.2010.02.015

Journal of Liaoning Petrochemical University ›› 2010, Vol. 30 ›› Issue (2): 53-57.DOI: 10.3696/j.issn.1672-6952.2010.02.015

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Adaptive Predistortion Techniques Based on Block-Oriented Model

SHEN Qing-bo¹， DING Yuan-ming²

1. School of Information and Control Engineering， Liaoning Shihua University, Fushun Liaoning 113001,P.R.China;
2. Liaoning Key Lab of Network Communications and Information Processing, Dalian University, Dalian Liaoning 116622,P.R. China

Received:2009-10-12 Published:2010-06-25 Online:2017-07-05

基于模块化模型的自适应预失真技术

沈清波1,丁元明2

1.辽宁石油化工大学信息与控制工程学院,辽宁抚顺113001;

作者简介:沈清波(1958-),男(满),辽宁灯塔县,副教授,硕士。

Abstract

Abstract:

The advantages and disadvantages of the previous predistortion methods for high power amplifiers (HPA) in orthogonal frequency division multiplexing (OFDM) transmitter were compared and summarized systematically. Block-oriented model-based adaptive digital predistortion technique was presented to compensate for the distortions in HPA with memory. The proposed predistortion schemes were explained, where the adaptive predistorters of HPA with memory were constructed based on Wiener model, Hammerstein model and Wiener-Hammerstein model, respectively. Thus, the complexity of the model parameters of all aspects of Wiener-Hammerstein estimated is avoided, separately. This makes the predistortion design of a high power amplifier with memory became simple.

Key words: High power amplifiers , , Adaptive predistortion , , Block-oriented model , System identification

摘要： 系统地比较和分析了OFDM 传输系统里高功率放大器(HPA)预失真方法的优缺点,提出一种基于
模块化模型的有记忆高功率放大器自适应数字预失真方法,该方法分别基于Wiener、Hammerstein和Wiener-
Hammerstein模型各自构成一个有记忆HPA 的自适应预失真器。从而避免了因分别估计Wiener-Hammerstein
模型各个环节特性参数所带来的复杂性。使得有记忆高功率放大器的预失真设计变得简单了。

关键词: 高功率放大器 , 自适应预失真 , 模块化模型 , 系统辨识

SHEN Qing-bo，DING Yuan-ming. Adaptive Predistortion Techniques Based on Block-Oriented Model[J]. Journal of Liaoning Petrochemical University, 2010, 30(2): 53-57.

沈清波,丁元明. 基于模块化模型的自适应预失真技术[J]. 辽宁石油化工大学学报, 2010, 30(2): 53-57.

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Adaptive Predistortion Techniques Based on Block-Oriented Model

基于模块化模型的自适应预失真技术

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