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.
出处
《现代电子技术》
2006年第16期134-135,共2页
Modern Electronics Technique
关键词
功率放大器
线性化
预失真
RLS算法
多项式
power amplifier
linearization
predistortion
RLS algorithm
polynomial
