Performance of a recursive algorithm for polynomial predistorter design

作     者：XU Ling-jun WU Xiao-guang WANG Yong ZHANG Ping 

作者机构：Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China 

基　　金：the National Natural Science Foundation of China (90204001) Beijing Science and Technology Planning Project (D0104002040921) 

出 版 物：《The Journal of China Universities of Posts and Telecommunications》 (中国邮电高校学报（英文版）)

年 卷 期：2008年第15卷第3期

页      码：95-99页

摘      要：In this article, based on least square estimation, a recursive algorithm for indirect learning structure predistorter is introduced. Simulation results show that of all polynomial predistorter nonlinear terms, higher-order （higher than 7th-order） nonlinear terms are so minor that they can be omitted in practical predistorter design. So, it is unnecessary to construct predistorter with higher-order polynomials, and the algorithm will always be stable. Further results show that even when 15th-order polynomial model is used, the algorithm is convergent after 10 iterations, and it can improve out-band spectrum of 20 MHz bandwidth signal by 64 dB, with a 1.2×10^11 matrix condition number.

主 题 词：digital predistortion recursive algorithm power amplifier linearization polynomial predistorter 

学科分类：080904[080904] 0810[工学-土木类] 0809[工学-计算机类] 08[工学] 080402[080402] 0804[工学-材料学] 081001[081001] 

核心收录：

D　O　I：10.1016/S1005-8885(08)60114-4

馆 藏 号：203158392...