基于脉冲群的低压电力线噪声峰式马尔科夫链建模研究  

Research on Modeling of Low Voltage Power Line Noise Peak Markov Chain Based on Pulse Swarm

作　　者：郭昊坤[1] GUO Haokun(Department of Electronic Information Engineering,Jiangyin Polytechnic College,Jiangyin 214405,China)

机构地区：[1]江阴职业技术学院电子信息工程系,江苏江阴214405

出　　处：《电工技术》2022年第19期1-4,共4页Electric Engineering

基　　金：江阴职业技术学院科研课题(编号XJ2021LG001);江苏高校青蓝工程优秀教学团队“智能制造自动化技术教学团队”项目(苏教师函〔2021〕11号)。

摘　　要：噪声干扰是影响低压电力线通信可靠性的主要因素之一。针对近年来国内外学者研究的噪声模型的不足,对一类具有自身特色噪声的模型进行了改进,建立了一种基于脉冲群的低压电力线噪声峰式马尔科夫链模型,并进行了仿真验证。仿真结果表明:只要噪声的幅值、宽度、间隔的状态足够多,脉冲群宽度和间隔的阈值设定合理,就可在这类噪声的建模基础上得到与实测噪声误差极小的仿真模型,且时域波形也有极高的相似度,为今后电力线通信信道噪声建模问题提供了切实可行的方案。Noise interference is one of the main factors that affect the reliability of the low-voltage power line communication.In view of the shortcomings of noise models studied by domestic and foreign scholars in recent years,a kind of noise model with its own characteristics is improved.A Markov chain model of low voltage power line noise peak based on pulse swarm is established and verified by simulation.The simulation results show that as long as there are enough states of noise amplitude,width and interval,and the thresholds of pulse group width and interval are set reasonably,a simulation model with minimal error compared with the measured noise is obtained on the basis of the modeling of this kind of noise,and the time domain waveform also has high similarity,which provides a practical solution for the noise modeling of the power line communication channel in the future.

关 键 词：低压电力线通信 背景噪声 脉冲噪声 马尔科夫模型 峰式马尔科夫链 

分 类 号：TM73[电气工程—电力系统及自动化]