Power Line Carrier Communications In The Rural Power Grid Study

The paper based on the actuality of countryside communication in our country. The works of research and development obey correlative stipulate. The countryside communication board is grounded on the right choose of technology and chip. In the core circuit, AT89C51 has being choosed as main controller and SC1128 as spread spectrum carrier unit. The data can be transmitted and received through two kind physical interface: power line and serial port. The module of Butterworth band—pass filter, automatic gain controller, power amplifer has being designed for auxiliary circuit.The power line network of rural The power line network of rural is to cover extensive infrastructure, The power line network that uses rural realizes data transmission as communication medium ,Can with a kind of economy, convenient, practical way extends communication to every family of remote village.To improving the communication reliability of system, ensuring the reliable data transmission, enhancing the capability of anti-jamming and decreasing the rate of error,the technology of Forward Error Correction iS advanced in the system, the work of the communication system is stability. It has the advantage of convenience to maintain. It'svaluable to use the the communication system, Due to the superiority on technologyand economy, spread spectrum has a glorious future in the domain of power line communication.