摘要
本文开发了一款超线性功率放大器,提出了LMS算法在射频功率放大器中的一种全新应用。首先,解释了自适应预失真的原理,将LMS滤波算法用于该原理中;其次,推理了LMS算法中的阶数和可调步长等参数的选择依据;最后,进行计算机仿真。结果表明,能提高功放效率10个百分点以上,有效增强了临信道功率抑制。
Developed a new kind of liner power amplifier. Increase the efficiency of high power amplifier is an advanced technique in the RF area. It is a totally new idea that using the LMS algorithm to achieve the adaptive pre-distortion, When amplifying the RF signal, the DSP chip will adapt the parameters of the LMS algorithm. In order to boost the linearity, enhance the ACPR. After text by the emulator, the result is remarkable
出处
《微计算机信息》
北大核心
2007年第32期307-308,300,共3页
Control & Automation
