高速低压电力线载波通信中的正交频分复用技术  

Orthogonal frequency division multiplexing for fast low voltage power line communication

作　　者：吴昕[1] 周拥华[1] 张有兵[1] 何海波[1] 程时杰[1] 孙敏[1] 

机构地区：[1]华中科技大学电力工程系,湖北武汉430074

出　　处：《继电器》2001年第10期38-41,共4页Relay

基　　金：中华电力教育基金会许继奖教金资助

摘　　要：结合低压电力线载波通信的特点 ,对单载波和多载波方案进行了比较 ,并介绍了一种适用于高速低压配电网载波通信的多载波技术———正交频分复用 (OFDM)技术。阐述了OFDM的原理、基于OFDM的高速低压电力线载波通信的解决方案。Recently there has been an increasing interest in high speed communication over low voltage power lines. In this paper, we briefly summarize the characteristics of the power line as a communication channel at first. Then detailed comparison is made regarding to two kinds of different modulation approaches-single carrier and multi carrier techniques. Finally, an effective way to realize high speed low voltage Power Line Communication (PLC)-Orthogonal Frequency Division Multiplexing(OFDM) is introduced. Its advantages are discussed.

关 键 词：低压电力线载波通信 正交频分复用 多径效应 码间干扰 

分 类 号：TN913.6[电子电信—通信与信息系统]