扩频通信、OFDM调制技术及其在电力线通信中的应用分析  

Spread-spectrum ,OFDM and their applications in high data rate PLC

作　　者：刘华玲[1] 张保会[1] 刘海涛 

机构地区：[1]西安交通大学电气工程学院,陕西西安710049

出　　处：《继电器》2001年第11期17-21,共5页Relay

摘　　要：扩频通信和OFDM调制技术均具有一定的抗干扰和抗多径效应能力 ,是电力线通信中比较理想的调制方式。文中介绍了两种调制技术的基本原理 ,分析了其在电力线通信中应用的优越性。最后从通信可靠性和实现经济性角度对两种技术进行比较分析 ,指出在 1Mbps通信系统中选用扩频通信 ,10Mbps系统中选用OFDM调制技术比较适宜。Both spread-spectrum and OFDM have the ability to mitigate interference and multi-path reflections. This paper introduces the basic principles of the two modulations, and then discusses their advantages for the application in power line communication. These two modulations are also compared in view of reliability and simplicity of communication. Finally, we conclude that spread -spectrum is available for in 1Mbps, while, OFDM for 10Mbps.

关 键 词：扩频通信 正交频分复用调制 电力线通信 抗干扰 

分 类 号：TN914.4[电子电信—通信与信息系统]