中文说明：电力线信道中的噪声，窄带噪声、随机脉冲噪声、有色背景噪声、于工频同步噪声、与工频异步噪声、绘制其时域波形、频谱及功率谱，每种噪声一个m文件，全部直接点击可以运行，看时域波形仿真结果、以及频谱和功率谱。
English Description：
Noise in power line channel, narrow-band noise, random impulse noise, colored background noise, power frequency synchronous noise, power frequency asynchronous noise, time domain waveform, frequency spectrum and power spectrum are drawn. Each noise has an m file. You can run it by clicking directly to see time domain waveform simulation results, frequency spectrum and power spectrum.