基于OFDM的高速电力线远程通信系统的设计与分析

Design and analysis of high-speed power line remote communications system based on OFDM

针对国内外现有的电力载波通信存在通信速率低,以及通信频率和通信功率不达标等缺陷,推进传输技术的研究,设计了一种基于正交频分复用技术(OFDM)的高速电力线远程通信系统。详细介绍了基于傅里叶(FFT)的OFDM和基于小波变换的OFDM传输方式,同时对比了两者数据传输的速率和效率,利用Lab VIEW编程,实现上位机的实时可视化监测。对电力载波通信传输(PLC)的检测方法和手段进行初步探索,测试结果表明整个系统在数据传输、抗干扰性、安全性等方面具有优良的性能,能够实现高速稳定的PLC通讯。

In view of existing low communication speed at home and abroad,the defect in communication frequency and communication power is substandard,which advances the research of transport technology,this paper designed a high-speed power line remote communication system based on OFDM. It introduced the transport of OFDM based on FFT and wavelet in detail,and compared their rate and efficiency with each other in data transport,thus making PC visualization monitoring in real time possible by using LabVIEW. This paper makes a primary research on the inspection approach of PLC. The results reflect that the whole system behaves well and is able to achieve quick and steady PLC communications in data transport,resistance to interference and security etc.