摘要
结合低压电力线载波通信的特点,阐述了正交频分复用(OFDM)的原理,给出了正交频分复用系统在衰落信道中的通用系统模型。该模型充分考虑了多径传播,以及频率和长度对衰减的影响,使其更具有实用价值。
Combined with the features of the carrier wave communication on low voltage electric power line, the paper stated the principle of the OFDM. The paper introduced the orthogonal frequency divided multiplex system to the general system model in reduced signal channel. The model has fully considered the multi way of transition, as well as the frequency and length affected to the reduction in order to have more practical value.
出处
《煤炭科学技术》
CAS
北大核心
2006年第7期43-45,共3页
Coal Science and Technology
关键词
OFDM
PLC
井下通信
衰落信道
OFDM
PLC
underground communication
reduced signal channel
