基于迭代合并的多端口网络低压电力线信道建模研究  

Research on iterative channel combination modeling in multiple port of low voltage power line network

作　　者：王毅[1,2,3] 孙洪亮[1] 叶君[1] 侯兴哲[1] 郑可[1] 骆凯波 程小明[1] 

机构地区：[1]国网重庆市电力公司电力科学研究院,重庆400014 [2]国网重庆市电力公司博士后科研工作站,重庆400014 [3]重庆邮电大学,重庆400067

出　　处：《电测与仪表》2015年第24期46-51,共6页Electrical Measurement & Instrumentation

基　　金：中国博士后科学基金资助项目(2013M530394;2015T80961);国家自然科学基金资助项目(61201206);重庆市自然科学基金资助项目(cstc2012jj A40045);重庆市博士后资助项目(Rc201314;Xm201322);重庆市教委科学技术研究项目(KJ120531)

摘　　要：电力线信道建模是实现复杂电力线网络下可靠通信最重要的步骤之一。传统的电力线信道建模方法是基于端到端的电力线信道,而低压配电网实际是一个具有多端口的网络,各个端口之间的信道响应由于信道路径的相关因而具有关联性。目前的信道模型缺乏对整个网络不同端口信道响应的研究,忽略了电力线信道与无线信道在物理特性上不同之处。文章提出多端口网络环境下电力线建模的新方法,理论分析电力线信道多端口之间相关性问题,研究基于多端口网络信道冲击响应建模方法的理论基础,建立多端口子电路网络分解方法的理论模型,所提出基于迭代的信道响应合并方法能够有效解决复杂低压电力线拓扑环境下的信道建模问题,为分析电力线载波信道空间相关性并在电力线上实现多输入多输出(MIMO)技术提供理论依据。The power line channel combination model is one of the most important steps for the achievement of the reliable communication under complicated power line network. The conventional research on the power line transmission model only considers point to point channel response. The low voltage distribution network is the superposition of different transmission paths from the transmitter. While,the physical difference between wireless channel and power line channel is ignored. Instead of point to point channel,the whole power line network channel response on multiple ports is studied in this paper. A new channel modeling method under multi-port network environment is proposed. The theoretical channel response relationship among different ports is analyzed,and the subnet decomposition and iterative channel response combination methods are established. The theoretical results prove that our proposed method can effectively solve the channel correlation and modeling complexity problem under complicated power line network,and can provide theoretically analysis on the sub-channel correlation and channel capacity of multiple input multiple output（ MIMO） PLC system.

关 键 词：电力线信道建模 多端口网络 迭代合并 子电路网络分解 多输入多输出(MIMO) 

分 类 号：TM933[电气工程—电力电子与电力传动]