中文说明：
电力线通信是现在家用通信的一种，在PLC通信的研究中，对信道的研究是至关重要的。改代码主要包括多径信道和噪声模型matlab代码，是目前最常用的模型。
English Description：
Power line communication is a kind of home communication. In the research of PLC communication, the research of channel is very important. The modified code mainly includes multipath channel and noise model matlab code, which is the most commonly used model at present