低压电力线信道衰减特性分析及建模仿真

Analysis and Modeling Simulation of Low-voltage Power Line Channel Attenuation Characteristics

对低压电力线信道的衰减特性进行了研究,采用多径传输模型分析多径延时与多径传播造成的衰减的原因,依据均匀传输线理论分析了线路损耗造成的衰减的原因,并推导出电力线衰减的传输函数.根据传输函数建立电力线网络多径传输模型,并进行MATLAB仿真,得到的仿真曲线与实测曲线大体一致.

Research the low-voltage power line channel attenuation characteristics, adopted multi-path transmission model to analyse the reason of multi-path delay attenuation and multi-path propagation attenuation, based on the uniform transmission line theory to analyse the reason of line losses attenuation, and derived the transmission function of power line attenuation. Build the multi-path transmission model of power line network based on the transfer function, and use MATLAB simulation. The simulation curve is broadly consistent with the measured curve.