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近几年来 ,与电信网及有线电视网相比 ,电力线通信 (PLC)网以其资源广阔、与家庭结合紧密等优势日益引起人们注视 ,并得到快速发展。文中追溯了 PLC的 80多年发展历程 ,将其划分为3个阶段 ,总结了各阶段的主要技术特征、代表产品及应用范围 ,其中重点分析和介绍了当前 PLC在欧洲和美、日等发达国家以及在我国的应用现状 ;进而通过对 PLC信道的恶劣条件和传输技术状况的描述 ,结合具体典型芯片的分析比较 ,指出了技术难度及发展迟缓的原因。文中还给出了PLC- HLAN,PLC- VPN,PLC- AN的应用和构建设想 ,指出了 PLC发展过程中应当重点研究的问题 :宽带传输、网络互联、专用固件设计、保密安全设施、面向家庭通信语言 ,以及技术体制和法制化等 ,强调了 PLC广泛应用的现实性与紧迫性。
In recent years, compared with the telecom network and the cable television network, the power line communication (PLC) network has drawn increasing attention and has been rapidly developed due to its abundant resources and close integration with the family. This paper traced the history of PLC over 80 years, divided it into three stages, summarized the main technical characteristics of each stage, represented the range of products and applications, and analyzed and introduced the current PLC in developed countries such as Europe, the United States, Japan, etc. as well as In our country’s application status; And through the PLC channel’s harsh conditions and transmission technology status description, combined with specific typical chip analysis and comparison, pointed out the technical difficulty and the reasons for the development delay. The paper also presents the application and construction ideas of PLC-HLAN, PLC-VPN and PLC-AN. It points out the problems that should be emphatically studied during the development of PLC: broadband transmission, network interconnection, special firmware design, confidential security facilities, Communication language, as well as the technical system and the legal system, etc., stressed the PLC’s wide range of practicality and urgency.