摘要
在低压电力线上实现高速数据传输具有广阔的应用前景和经济价值,但是由于电力线信道存在着随机的高噪声、多径效应和信道衰落,严重制约了高速数据的传输。OFDM(正交频分复用)是解决这个问题的最有效手段之一。论文介绍了低压输电线上数据传输的特性、OFDM的基本原理和实现方法,以及用Systemview仿真软件对其调制解调过程进行仿真的结果。
Highspeed data communication over lowvoltage power line is an active field with broad application perspective and economic benefits in the world. But due to the stochastic high noise,multipath effect and attenuation,power line channel is difficult for transmitting highspeed streams. Orthogonal frequency division multiplexing(OFDM) is one of the technologies for resolving this problem. This paper presents the characteristics of data communication over lowvoltage power line,the principle and implementing method of OFDM and simulating the process of the modulation and demodulation of OFDM with Systemview.
出处
《电力系统通信》
2003年第1期28-30,共3页
Telecommunications for Electric Power System
