电力系统自动化Issue(23)：93-96,129,5.DOI:10.7500/AEPS201302019
电力线OFDM通信系统的自适应定时同步阈值选择方法
An Adaptive Threshold Selection Method for Timing Synchronization of OFDM-based Power Line Communication System
李风飞 1胡国荣1
作者信息
- 1. 中国科学院微电子研究所，北京市 100029
- 折叠
摘要
Abstract
Based on an analysis of the relationship between the signal-to-noise ratio and the threshold of timing synchronization, an optimal threshold curve of timing synchronization is fitted, and an adaptive threshold selection method of timing synchronization is proposed.The method applicable to all data-aided timing synchronization systems is applied to the lower-voltage orthogonal frequency division multiplexing (OFDM) power line carrier communication system to resist the harsh channel situation of power line and improve the timing synchronization performance.Simulation results show that the method outperforms the local relevant algorithm of fixed threshold with its frame error detection probability close to the optimal threshold curve.With its 2 dB function improvement than the fixed threshold method,this method is suitable for a power line communication environment with a low signal-to-noise ratio.关键词
正交频分复用/电力线载波通信/定时同步/阈值选择Key words
orthogonal frequency division multiplexing (OFDM)/power line carrier communication/timing synchronization/threshold selection引用本文复制引用
李风飞,胡国荣..电力线OFDM通信系统的自适应定时同步阈值选择方法[J].电力系统自动化,2013,(23):93-96,129,5.
