摘要
构建电力线通信信道噪声干扰模型对于深入研究低压电力线载波通信性能至关重要。结合低压电力线信道的噪声特性,构建了基于背景噪声的自回归(auto-regressive,AR)模型,对比分析自相关、Burg和修正协方差3种模型参数求取方法,并进行仿真验证分析结果。理论分析与实际仿真结果表明,在电力线背景噪声的AR模型中,修正协方差法所求结果较其他2种方法更适合电力线背景噪声建模,为研究电力线载波抗干扰提供理论基础。
Constructing power line communication channel noise model is of great importance for further study of low voltage power line carrier communication performance. The auto-regressive（AR） model of background noise is constructed combining with the low vohage power line channel noise characteristic, then we compare and analyze the model parameters solved by the autoeorrelation method, the Burg and the modified covariance method, which can be validated by computer simulation. The contrasting result of simulation and actuality shows that： in the AR model of power line background noise, the results of the modified eovariance method, compared with other two kinds of method is more suitable for power line background noise modeling and it provides the theoretical basis for further study of power line carrier anti-interference.
出处
《重庆邮电大学学报（自然科学版）》
CSCD
北大核心
2015年第6期722-727,共6页
Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)
基金
国家科技重大专项(SGCQDK00JZJS1400086)~~
关键词
电力线载波
噪声特性
背景噪声
自回归模型
power line carrier
noise characteristic
background noise
auto-regressive model
