摘要
传统的单边带电力线载波机存在频谱利用率低、抗干扰能力弱、传输速率低的缺陷,已越来越不能满足电力通信的需要。而基于编码正交频分复用(COFDM)调制技术的载波机可有效弥补传统载波机的不足,实现高速数据传输。文中介绍国内电力载波通信现状、COFDM的原理和实现方法,并通过仿真证明其可行性。
There are such defects as low utilization factor of frequency spectrum , low anti-jamming ability and low transmitting velocity existing in the traditional single sideband carrier wave transmitter for transmission line communication . So it increasingly can not meet the demands of power system communication . However , the transmitter based on COFDM can make up the insufficiencies of the traditional transmitter effectively and realize high-speed data transmitting. This paper introduces the present situation of domestic power carrier wave communication . It also presents the principle and realization method of COFDM , and proves its feasibility through simulation.
出处
《中国电力》
CSCD
北大核心
2004年第6期82-85,共4页
Electric Power
关键词
电力系统
电力线载波通信
CFDM
高压输电线
数字载波通信
载波机
power line communication
COFDM (Coded Orthogonal Frequency Division Multiplexing)
channel coding
TCM (Trellis Coded Modulation)
