Research And Practice On Power Line Carrier Digital Communication

With the rapid development of modern communication technology, the digital time is around the corner without being realized. The information carrier, as the keystone of digitalized and informational construction, is developing rapidly and widely. Low-voltage power line shows its strong competitive ability because of the following advantages: wideness, popularity, sophisticated cabling system, convenience, low price.The paper expounded power line communication will be the existing power network as a large number of physical network communications,combine power transmission network and electricity network into one to achieve tremendous advantage of digital carrier communication .At the same time, by studying the basic principle of power line communication ( PLC ) ,problems existing in power line communication ,present technology of power line communication , basic principle of data transmission by power line communications technology and network model of power line communication and design of power line communication modem based on CY7C68013, The network model of PLC were developed to achieve formation of computer local area network(LAN)with Low-voltage power line and communication between computer and internet with Low-voltage power line.From the paper, it is concluded that with the development of PLC technology the users can combine computers, all the electronic devices, safety system and home electrical equipments into family net easily with power line. At the same time, communication was achieved among internet. High-speed power line communication technology is becoming the focus of the research in communication field at home and abroad and has the tremendous market potentiality.