Study on digital predistortion technology for power amplifiers

Li Changyuan1; Huang Tao1; Liu Yongpiao1; Chen Dongjin1

doi:10.13756/j.gtxyj.2010.06.002

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Study on digital predistortion technology for power amplifiers

- Study on digital predistortion technology for power amplifiers
- Study on Optical communication Issue 6, Pages: 51-53(2010)
- 作者机构：
  
  1. 光纤通信技术和网络国家重点实验室
  2. 武汉虹信通信技术有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2010.06.002
  CLC： TN722.75
- Published：2010，
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[1]李昌元,黄涛,刘永飘,陈东进.功率放大器数字预失真技术的研究[J].光通信研究,2010(06):51-53.

Li Changyuan1, Huang Tao1, Liu Yongpiao1, et al. Study on digital predistortion technology for power amplifiers. [J]. (6):51-53(2010)
[1]李昌元,黄涛,刘永飘,陈东进.功率放大器数字预失真技术的研究[J].光通信研究,2010(06):51-53. DOI： 10.13756/j.gtxyj.2010.06.002.

Li Changyuan1, Huang Tao1, Liu Yongpiao1, et al. Study on digital predistortion technology for power amplifiers. [J]. (6):51-53(2010) DOI： 10.13756/j.gtxyj.2010.06.002.

摘要

在宽带码分多址（WCDMA）等宽带通信系统中

射频功率放大器呈现出严重的电记忆效应和热记忆效应

产生频谱再生和邻道干扰

传统的无记忆预失真技术已经无法消除信号失真而达到理想的线性化效果。针对此类有记忆性的功放

文章提出一种新的记忆多项式预失真器

以跟踪射频功率放大器特性的变化

并进行非线性补偿。

Abstract

In broadband communication systems

e.g.WCDMA

RF power amplifiers are subject to electric and thermal memory effects

resulting in spectral regrowth and adjacent channel interference

which cannot be cancelled by conventional memoryless predistortion technologies for the desired linearizing effects.For those memory power amplifiers

a novel memory polynomial predistortor is presented for those memory power amplifiers so as to track the variations of their characteristics and compensate the nonlinearity.

关键词

记忆效应数字预失真记忆多项式递推最小二乘法

Keywords

memory effectdigital predistortionmemory polynomialrecursive least square

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School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications

Institute of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications

Wuhan Research Institute of Post and Telecommunications

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