摘要
本文主要介绍了电力线通信 (PLC)的最新发展和电力线通信的优缺点 ,强调了电力线信道存在的噪声和衰减 ,以及克服这些不利因素的解决方案。着重叙述了扩频通信 (SSC)技术和正交多载波调制 (OFDM)技术的原理及它们对各种噪声和衰减的抵抗能力 ,并列举了很多国内外分别采用了这两种技术的通信产品实例。最后 。
This paper introduces the recent the development of the power line communication.At the same time,the defects or merits of the power line communication are included in this paper.It stresses that noise and at-tenuation can much exist in power line communicaton channels and the schemes of resolving these disadvantages are respectively discussed here.It mainly discusses the principles of the spread spectrum communication and orthogonal frequency division multiplexing and the abilities of their withstanding noise and attenuation.Meanwhile a lot of eamples which adopt these technologies are listed in this paper.In the end,it describes the development and appliction of the power line communication at home.
出处
《自动化与仪器仪表》
2003年第5期1-3,7,共4页
Automation & Instrumentation
