摘要
根据工作实验的分析,对低压电力线通信信道模型和信道特性进行了详尽的阐述,对当前应用广泛的几种低压电力线通信信道模型进行了介绍,详细分析了几种基于OFDM低压电力线通信的信道估计算法。同时对多种算法实施比较,分析总结出各自的优缺点,最终得出一种不仅运算量小,而且对信道的利用率很高、实现十分容易的算法。即:基于慢时变信道特性的LMS自适应信道估计算法在信道突变衰减中具有非常高的稳定度特性,非常适合在低压电力线信道中应用。
Combined with the author＇s working experience, this paper introduces the low-voltage power line channel characteristics firstly, then low-voltage power line channel model, and finally studies the channel estimation algorithm based on OFDM low-voltage power line communication. Comparing many channel estimation algorithms of OFDM low voltage power line communication and analyzing the advantages and disadvantages, the conclusions are given. The estimation algorithm based on the slow time-varying channel characteristics of LMS adaptive channel estimation computation is small, simple, channel utilization is also high, at the same time, for mutations in the attenuation of high stability, it is more suitable for a power line channel.
出处
《通信电源技术》
2012年第4期73-74,77,共3页
Telecom Power Technology
关键词
OFDM
低压电力线通信
信道特性
信道模型
信道估计算法
OFDM
low-voltage power line communication
channel characteristics
channel model
channel estimation algorithm
