计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (29): 114-117.DOI: 10.3778/j.issn.1002-8331.2009.29.034

• 数据库、信号与信息处理 • 上一篇    下一篇

模块化模型功率放大器的自适应预失真

丁元明1,2,王甲凯2   

  1. 1.辽宁省智能信息处理重点实验室,辽宁 大连 116622
    2.大连大学 信息工程学院,辽宁 大连 116622
  • 收稿日期:2008-11-17 修回日期:2008-12-23 出版日期:2009-10-11 发布日期:2009-10-11
  • 通讯作者: 丁元明

Adaptive predistortion for power amplifiers based on block-oriented model

DING Yuan-ming1,2,WANG Jia-kai2   

  1. 1.Liaoning Key Lab of Intelligent Information Processing,Dalian,Liaoning 116622,China
    2.Institute of Information Engineering,Dalian University,Dalian,Liaoning 116622,China
  • Received:2008-11-17 Revised:2008-12-23 Online:2009-10-11 Published:2009-10-11
  • Contact: DING Yuan-ming

摘要: 为补偿正交频分复用(OFDM)通信系统中由记忆高功率放大器(HPA)引起的失真,提出了一种自适应数字预失真方法。对Wiener、Hammerstein和Wiener-Hammerstein模块化模型的HPA各自构成了一个有记忆自适应预失真器。仿真结果表明,利用模块化模型能快速、简便地实现记忆放大器的线性化,而且具有满意的性能。

关键词: 高功率放大器, 自适应预失真, 系统辨识, 模块化模型

Abstract: An adaptive digital predistortion technique is presented to compensate for the distortions of High Power Amplifiers(HPA) with memory in Orthogonal Frequency Division Multiplexing(OFDM) communication systems.The proposed predistortion schemes are described by block-oriented models’ Wiener model,Hammerstein model and Wiener-Hammerstein model respectively,where the memory adaptive predistorters are constructed for the HPA.Simulation results demonstrate that the proposed predistortion method can effectively realize the linearization of memory HPA,and it has satisfactory performance.

Key words: High Power Amplifiers(HPA), adaptive predistortion, system identification, block-oriented model

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