一种基于分段线性化的低邻道泄漏预失真方法

doi:10.3969/j.issn.0372-2112.2013.11.029

电子学报

一种基于分段线性化的低邻道泄漏预失真方法

胡明, 潘文生, 朱晓东

电子科技大学通信与信息工程学院, 四川成都 611731

收稿日期:2012-06-15 修回日期:2013-07-09 出版日期:2013-11-25
- 通讯作者:
- 胡明
- 作者简介:
- 潘文生 男，博士研究生，1975年11月出生.分别于1998年、2005年在电子科技大学获工学学士、硕士学位.现就读于电子科技大学通信抗干扰技术国家级重点实验室，研究方向为高效宽带功率放大器、峰均比抑制、数字预失真技术. 朱晓东 男，博士，副教授，IEEE会员，1976年5月出生.1997年、2004年和2009年分别在西安电子科技大学、华中科技大学获得工学学士、硕士、博士学位.现就职于电子科技大学通信抗干扰技术国家级重点实验室，主要从事宽带无线通信关键技术研究.
- 基金资助:
- 国家重大专项 (No.2010ZX03007-003，No.2011ZX03001-006-01，No.2012ZX03003010-003，No.2014ZX03003001-002）; 国家自然科学基金 (No.61101034，No.61271164，No.61001087，No.u1035002/L05）

A New Predistortion Method with Low Adjacent Channel Leakage Based on Piecewise Linear

HU Ming, PAN Wen-sheng, ZHU Xiao-dong

School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China

Received:2012-06-15 Revised:2013-07-09 Online:2013-11-25 Published:2013-11-25
- Supported by:
- National Science and Technology Major Project (No.2010ZX03007-003, No.2011ZX03001-006-01, No.2012ZX03003010-003, No.2014ZX03003001-002); National Natural Science Foundation of China (No.61101034, No.61271164, No.61001087, No.u1035002/L05)

摘要/Abstract

摘要： 本文基于预失真技术提出一种记忆非线性系统的线性化处理方法.与传统预失真模型（直接学习型、间接学习型）获取系统逆传递函数的方式不同，这里采用直接获取记忆非线性系统传递函数的方式，将传递函数表示为分段线性化形式后，应用于所提出的预失真方法中.验证结果显示，该方法与无预失真情况相比，记忆非线性系统输出的归一化均方误差改善约80dB，且邻道泄漏比的改善值超过70dB，克服系统的记忆性、非线性，让记忆非线性系统的输出和输入呈现线性关系.

关键词: 预失真, 分段线性化, 邻道泄漏比, 记忆非线性系统

Abstract: A new method of linearity based on predistortion for memory nonlinear system is introduced in this paper.Different from the traditional predistortion models (direct study model and indirect study model),the transfer function instead of the inverse transfer function is obtained for memory nonlinear system.The transfer function is presented as piecewise linear function first,and then be used in predistortion process.The results show that the NMSE(Normalized Mean Square Error) of the memory nonlinear system output is reduced about 80dB,and the ACLR(Adjacent Channel Leakage Ratio) is reduced over 70dB,comparing with no predistortion system.The memory and nonlinear characteristics are eliminated,and the relationship of input and output becomes linear and memoryless.

Key words: predistortion, piecewise linear, adjacent channel leakage ratio, memory nonlinear system

中图分类号:

TN830.6

胡明, 潘文生, 朱晓东. 一种基于分段线性化的低邻道泄漏预失真方法[J]. 电子学报, DOI: 10.3969/j.issn.0372-2112.2013.11.029.

HU Ming, PAN Wen-sheng, ZHU Xiao-dong . A New Predistortion Method with Low Adjacent Channel Leakage Based on Piecewise Linear[J]. Acta Electronica Sinica, DOI: 10.3969/j.issn.0372-2112.2013.11.029.

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一种基于分段线性化的低邻道泄漏预失真方法

A New Predistortion Method with Low Adjacent Channel Leakage Based on Piecewise Linear

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