射频功放数字预失真算法的验证平台  

A Verification Platform for RF PA′s Digital Predistortion Algorithms

作　　者：余弦[1] 朱晓维[1] 

机构地区：[1]东南大学毫米波国家重点实验室,江苏省南京市210096

出　　处：《电子工程师》2007年第4期27-29,共3页Electronic Engineer

摘　　要：主要针对射频功放的数字预失真线性化技术,建立了一个用来验证多种数字预失真算法的数字化平台,它由A/D转换、D/A转换、FPGA(现场可编程门阵列)、下变频等硬件电路和相应的算法软件构成。测试用其实现的一种开环复增益查表法对CDMA2000系统功放ACPR(邻道功率比)的改善值,得出了与系统仿真较为一致的结果。In this paper, a verification platform is established to verify the feasibility of several digital predistortion algorithms. It is consisted of hardware circuits such as DAC and ADC, FPGA, down-converter and corresponding sofiwares. Then we built an open-loop complex gain LUT method for CDMA2000 system on this platform and obtained a great improvement in the PA＇ s ACPR which is consistent with the simulation result.

关 键 词：射频功率放大器 数字预失真 验证平台 邻道功率比 

分 类 号：TN929.533[电子电信—通信与信息系统]