基于核密度的电力线通信网络时延估计  

Estimation of the delay of power line communication network based on kernel density

作　　者：毛珊珊 马胜国 魏本海 何先灯[2] 冷安辉 MAO Shanshan;MA Shengguo;WEI Benhai;HE Xiandeng;LENG Anhui(Shenzhen Guodian Tech.Com.Co.,Ltd.,Shenzhen 518109,China;School of Telecommunications Engineering,Xidian University,Xi’an 710071,China;Shenzhen Smartchip Microelectronics Tech.Co.,Ltd.,Shenzhen 518045,China)

机构地区：[1]深圳市国电科技通信有限公司,广东深圳518109 [2]西安电子科技大学,通信工程学院,陕西西安710071 [3]深圳智芯微电子科技有限公司,广东深圳518045

出　　处：《电子设计工程》2023年第1期133-137,142,共6页Electronic Design Engineering

基　　金：国家自然科学基金项目(62001351);陕西省重点研发计划(2019ZDLGY09-02)。

摘　　要：通过测试节点间时延构造网络拓扑是智能电网故障管理和高效运行的有效途径,而家用电器对时延测试的精度造成较大干扰。基于转移参数给出了电力线通信信道的传递函数理论模型,讨论了用电器对信道传递函数的影响;进而对测量得到的含噪声时延数据采用核密度估计法进行统计分析,有效去除了家用电器的干扰。仿真结果表明,合理设置核宽度比,采用核密度估计可使得测量误差降低到1 ns以内。文中研究结果对电力线通信网络性能优化、拓扑构造具有重要的参考价值。Constructing a network topology by testing delay between nodes is an effective way for the fault management and efficient operation of smart grid,but its accuracy may be seriously interfered by household appliances.Based on the transfer parameters,the theoretical transfer function model of PLC channel is given,and the effects of household appliances on the channel transfer function are discussed.Moreover,Kernel Density Estimation(KDE)is used for statistical analysis of the measured noise⁃containing delay data,which effectively removes the interference of household appliances.The simulation results show that the usage of KDE with a reasonable core⁃width ratio can reduce the measurement error to within 1 ns.The results of this paper have important reference value for PLC performance optimization and topology construction.

关 键 词：电力线通信 时延 信道传递函数 转移参数 核密度估计 

分 类 号：TN913.6[电子电信—通信与信息系统]