宽带电力线通信技术及前景展望

Broadband power line communication technologies and their prospects

宽带电力线通信技术是电力线载波通信发展的方向。文章围绕电力线宽带通信的原理,介绍了两种主要用于电力线载波通信的宽带调制技术:扩频技术和正交频分复用(OFDM)技术,分析了其在电力线通信中抗干扰和抗多径效应的原理,比较了这两种技术应用于电力线通信时的优缺点;然后介绍了几款最新的电力线载波芯片;最后,对电力线通信发展现状及市场前景进行了展望。

The broadband Power Line Communication （PLC） technology determines the development orientation of the power line carrier communications. On the basis of the principle of the broadband PLC, this paper introduces two broadband modulation technologies that are mainly used in power line carrier communications, i.e. spread spectrum and OFDM, analyzes the principle of their resistance to interference and to multi-path effects and compares their advantages and disadvantages when they are applied in power line communications. Then, it continues to introduce several versions of the latest power line carrier chips and finally describes the current status of PLC and forecasts its market prospect.