基于低压电力信道的信道容量计算与分析

Channel Capacity Calculation and Analysis based on Low-Voltage Power Channel

目前,许多通信部门都在研究如何利用低压电力线作为通信线路。它的潜在优点是线路不用重新铺设,节约材力;缺点是用电设备的不断接入和接出,对信号都是干扰,阻碍了信号传输,也限制了传输距离。可见,设计适合于在低压电力线上通信的系统,除了要建立低压电力线信道模型外,还必须分析信道的分支数、分支长度等对低压电力线信道容量的影响。因此,对低压电力线的信道容量进行计算分析,并仿真了自动抄表系统受噪声影响的误码率情况。

Nowadays,many communications departments focus on how to use the low-voltage power line as a communication line.Its potential advantage is that the line does not need to be re-laid and the material is saved,while the shortcoming is that the continuous access and connection of the electrical equipment would interfere with the signal,obstruct the transmission of the signal,and also limit the transmission distance.It can be seen that in the design of a communication system suitable for low voltage power line,it is necessary to establish a model low-voltage power line channel,analyze the influence of branch number and branch length on the channel capacity of low-voltage power line.Therefore,the channel capacity of the low voltage power line is calculated and analyzed,and the simulation on error rate of the automatic meter reading system affected by noise also done.