The Intelligent Home Network Power Line Communication System

With the rapid development of the computer, communication, and network technologies, consuming electronic products are gradually being combined with computer and communication technologies closely and become what are usually called 3C products. Automatization of single household electronic products is far from to be enough to meet the needs of people's requirement of automatization and intelligentization, the people want to connect all the household electronic appliances and hence to become a harmonic and consistent system of automatization and intelligentization, and bring the household electronic products orient toward household automatization, so as to realize home network. The method of realizing home network through power line is most convenient, however it suffers from the disadvantages of low reliability and low communicating speed, thus this project makes a discussion and research over the electric-wired communication system of home network.Firstly, this paper introduces some of the characteristics and development trends of power line communication, and then analyzes the power line communication system based on the home network, and propose the methods of constructing intelligent home network based on LonWorks technology, and gives the system model and the hardware realization methods of power line communication system based on the DSP chip. The paper also combines the latest OFDM technology to research and design the channel encoding technology and modulating and demodulating technologies of power line communicating system, and gives the simulating results of system design.