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.
出处
《电子工程师》
2007年第4期27-29,共3页
Electronic Engineer
关键词
射频功率放大器
数字预失真
验证平台
邻道功率比
RF power amplifier
digital predistortion
verification platform
adjacent channel power ratio
