多频率合成信号包络优化的初相搜索方法

基于对多频率合成信号通过非线性器件产生非线性失真的分析,推导了通过优化输入信号包络减小非线性失真的理论,并提出了实现输入信号包络优化的快速初相搜索算法,对使用该方法进行输入信号包络优化前后的非线性失真进行了仿真比较,结果表明对输入信号使用快速初相搜索算法优化后可以减小非线性失真。

Initial Phase Searching Algorithm for Optimizing Multi-frequency Compound Signal Envelop

According to analysis the non-linear distortion caused when a multi-frequency compound signal is put into a non-linear element,the reducing non-linear distortion theory based on optimizing the input signal envelop is deduced.In order to optimize the input signal envelops,a fast initial phase searching algorithm is proposed.Finally,simulation is performed and the results show that by optimizing the initial phase of input signal with the new searching algorithm,the non-linear distortion can be reduced.