The Principle Study And Application Of Powerline Carrier Communication

The powerline has been applied into communication field since early twentieth century. Recently, people pay more and more attention on such kind of communicated technology because the powerline communication could reduce the cost for establishing new networks. The major application of powerline communication are focused on automatic meter reading, distribution automation and supervisory control, home-bus for making the building "Intelligent" and multimedia communication used as the last mile part communication.In this paper, we firstly introduced the development of the powerline communication technology. Then, we study the transmission characteristics of the powerline channel and the channel noise. The powerline communication had interferential features (including dominant and widely varying noise sources, impedance changes and multipath attenuation, etc.) while spread spectrum communication technology had the pseudo-random coding and signal processing features as well as the advantages of anti-interference, anti-noise, anti- multipath attenuation and working under Low-power spectral density. Thus, we also include the discussion of spread spectrum communication technology in this article.According to the principle of the modular design, we adopted SC1128 chip as the core apparatus of our carrier communication system and divided the whole system into different modules. And then the circuit design, chip configuration and software design were discussed within every module.Finally, the carrier communication system was applied into the distributed power management system and the design of such system was also detailed described in this article.