高压电力线载波COFDM通信及编码技术的应用研究

Application research on COFDM modulation and channel coding technology on the high-voltage power line carrier communication

针对目前电力系统载波通信的现状 ,提出了一种基于编码正交频分复用调制技术的高压电力线载波数字通信系统 ,并讨论了COFDM系统中关于峰均功率比、同步、信道抗干扰编码问题及相应的解决方法。文中还通过计算机仿真测试了所提出的数字通信系统的误码率 (BER)性能 ,取得一个比较好的结果 。

In this paper, a power line carrier (PLC) communication system based on a type of coded orthogonal frequency division multiplexing (COFDM) modulation is presented. Some application problems in the COFDM system such as PAPR, synchronization, and channel antiinterference coding are discussed and relevant solving scheme is put forward. The performance of the proposed system with parameters is investigated through computer simulation. A good bit error rate (BER) result is observed. Simulation results show that high data communication could be carried out with the proposed technology in high voltage power line channels.