BPSK信号的平滑化方法及其比较

信号的平滑化是指消除相邻码元之间的相位跳变。平滑化信号可以有效抑制信号中的谐波分量从而提高信号的频谱利用率，信号的平滑化主要有滤波法和平滑函数法两种实现方法。本文对BPSK信号的各种平滑化方法进行了介绍，并以直接滤波法为例对其进行参数的优化选择，最后从时域、频域和误码率等几个方面对这几种平滑化方法进行了比较。还利用MATLAB软件对以上内容进行了仿真，仿真结果表明，BPSK信号经过平滑化后，其谐波分量可以得到很大程度的抑制。

Smoothing Methods of BPSK Signal and Their Comparison

Signal smoothing refers to making the phase of signal continuous.Using smoothing techniques,side lobes of signal can be efficiently reduced and frequency usage efficiency can be increased.There are mainly two methods to smooth signal,one is to use filter and the other is to insert smoothing function into signal.In this paper,several smoothing methods of BPSK signal are introduced,and an optimization of parameter selection is achieved.Then we give a comparison of these smoothing methods from aspects of time-...