一种基于RLS算法的多项式预失真技术  

Predistortion of Polynomial Based on RLS Algorithm

作　　者：贾建华[1] 王强[1] 

机构地区：[1]同济大学电子与信息工程学院,上海200331

出　　处：《现代电子技术》2006年第16期134-135,共2页Modern Electronics Technique

摘　　要：对一种经过改进的基于RLS算法的多项式预失真算法进行了研究。此种多项式预失真方法的基本原理是将传统的多项式函数分解为2个简单函数来逼近目标函数。将一个复杂的函数分解为2个简单函数后大大降低了RLS算法的计算量。同时,还将改进后的多项式预失真技术应用于功放设计中并进行了仿真,仿真结果显示改进后的RLS多项式预失真算法对交调失真的抑制依然有非常好的效果。In this paper,a modified RLS algorithm based polynomial predistortion algorithm is proposed. The basic principle of this polynomial predistortion method is to approximate the target function with two simpler functions instead of the conventional polynomial function. A complex function is decomposed into two simpler functions so that we can compute the RLS algorithm with much less complexity, Meantime this modified polynomial predistortion is implemented in the design of the PAs. And the simulation results show good performance in the reduction of the intermodulation distortion.

关 键 词：功率放大器 线性化 预失真 RLS算法 多项式 

分 类 号：TN722.7[电子电信—电路与系统]