conv_s_to_impulse

代码说明：

  通常通过网络分析仪测量信道响应，但网络分析仪的输出为S4P，而信道仿真采用时域冲击响应。本程序将S4P转化为时域冲击响应。(Usually channel response is measured by network analyzer. However the output of network analyzer is S4P and channel simulation use impulse response in time domain. This program converts S4P to impulse response.)