Power line communication (PLC) is a promising smart grid application for information transmission using existing power lines. We analytically model a finite-source PLC network subject to channel failure through a queu...Power line communication (PLC) is a promising smart grid application for information transmission using existing power lines. We analytically model a finite-source PLC network subject to channel failure through a queueing theoretic framework. The proposed PLC network model consists of a base station (BS), which is located at a transformer station and connected to the backbone communication networks, and a number of subscriber stations that are interconnected with each other and with the BS via the power line transmission medium. An orthogonal frequency division multiplexing based technique is assumed for forming the transmission channels in a frequency spectrum. The channels are subject to failure during service due to noise. We determine the steady-state solution of the proposed model and derive a set of performance metrics of interest. Numerical and simulation results are presented to provide further insights into the analytical results. The proposed modeling method is expected to be used for evaluation and design of future PLC networks.展开更多
A hybrid model for broadband multiple-input multiple-output(MIMO) relay-aided indoor power line communications(PLC) system was proposed in this paper. The proposed model combines the top-down and bottom-up approaches ...A hybrid model for broadband multiple-input multiple-output(MIMO) relay-aided indoor power line communications(PLC) system was proposed in this paper. The proposed model combines the top-down and bottom-up approaches and extends to a two-hop relay-aided cooperative system with variable gain relay in amplify-and-forward(AF) mode. Based on the proposed PLC model and generated channel, the channel statistical characteristics are further investigated in 2 MHz^100 MHz bandwidth. Simulated results show that the proposed model overcomes the difficulties that the existing models need a lot of topological information of the network or measurements information. It provides a practical simulation analysis method for cooperative relay MIMO-PLC system. The results also show that cooperative MIMO relaying communications can improve the indoor PLC performances and communication reliability.展开更多
电力线载波通信(power line communication,PLC)技术是电力系统中应用广泛的重要通信手段。电力线信道模型的建立和电力线载波频率的优化对于在电力线上实现高速数据传输具有重要意义。首先简要介绍电力线信号传输基本理论,然后按照建...电力线载波通信(power line communication,PLC)技术是电力系统中应用广泛的重要通信手段。电力线信道模型的建立和电力线载波频率的优化对于在电力线上实现高速数据传输具有重要意义。首先简要介绍电力线信号传输基本理论,然后按照建模所需参数的获取方法进行分类,对各种电力线信道建模技术进行了综述。介绍各类建模技术的发展历程,并分析了各种技术的优缺点。最后提出一种基于图论法的电力线载波信道建模方法,分析了该方法应用于智能电网中压电力线载波通信的可行性。展开更多
该文提出一种多输入多输出(multi-input multi-output,MIMO)宽带电力线载波通信(power line communications,PLC)信道混合模型。该模型结合电力线载波通信信道自上而下和自下而上两种建模方法,考虑了多输入多输出载波信道的空间相关性,...该文提出一种多输入多输出(multi-input multi-output,MIMO)宽带电力线载波通信(power line communications,PLC)信道混合模型。该模型结合电力线载波通信信道自上而下和自下而上两种建模方法,考虑了多输入多输出载波信道的空间相关性,提供一种不需要完整载波网络拓扑信息和测量数据的先验电力线信道建模方法。给出了低压室内电力线载波通信信道模型算例,分析了算例在2~30MHz和2~100MHz两种带宽下的信道特征和参数,并与已有模型进行了对比。结果表明,在同等条件下该文模型与已有模型仿真结果一致,但克服了需要获得大量负载阻抗信息或大量测量数据建模的困难,为多输入多输出电力线载波通信提供了一种具有实用价值的仿真分析方法,对于简化多输入多输出电力线载波信道的研究、设计和工程应用具有重要意义。展开更多
文摘Power line communication (PLC) is a promising smart grid application for information transmission using existing power lines. We analytically model a finite-source PLC network subject to channel failure through a queueing theoretic framework. The proposed PLC network model consists of a base station (BS), which is located at a transformer station and connected to the backbone communication networks, and a number of subscriber stations that are interconnected with each other and with the BS via the power line transmission medium. An orthogonal frequency division multiplexing based technique is assumed for forming the transmission channels in a frequency spectrum. The channels are subject to failure during service due to noise. We determine the steady-state solution of the proposed model and derive a set of performance metrics of interest. Numerical and simulation results are presented to provide further insights into the analytical results. The proposed modeling method is expected to be used for evaluation and design of future PLC networks.
基金supported by the Natural Science Foundation of Hebei Province of China (F2019201362,E2019502186)the Hebei University One Province One University Special Fundthe Fundamental Research Funds for the Central Universities (2018MS096).
文摘A hybrid model for broadband multiple-input multiple-output(MIMO) relay-aided indoor power line communications(PLC) system was proposed in this paper. The proposed model combines the top-down and bottom-up approaches and extends to a two-hop relay-aided cooperative system with variable gain relay in amplify-and-forward(AF) mode. Based on the proposed PLC model and generated channel, the channel statistical characteristics are further investigated in 2 MHz^100 MHz bandwidth. Simulated results show that the proposed model overcomes the difficulties that the existing models need a lot of topological information of the network or measurements information. It provides a practical simulation analysis method for cooperative relay MIMO-PLC system. The results also show that cooperative MIMO relaying communications can improve the indoor PLC performances and communication reliability.
文摘电力线载波通信(power line communication,PLC)技术是电力系统中应用广泛的重要通信手段。电力线信道模型的建立和电力线载波频率的优化对于在电力线上实现高速数据传输具有重要意义。首先简要介绍电力线信号传输基本理论,然后按照建模所需参数的获取方法进行分类,对各种电力线信道建模技术进行了综述。介绍各类建模技术的发展历程,并分析了各种技术的优缺点。最后提出一种基于图论法的电力线载波信道建模方法,分析了该方法应用于智能电网中压电力线载波通信的可行性。
文摘该文提出一种多输入多输出(multi-input multi-output,MIMO)宽带电力线载波通信(power line communications,PLC)信道混合模型。该模型结合电力线载波通信信道自上而下和自下而上两种建模方法,考虑了多输入多输出载波信道的空间相关性,提供一种不需要完整载波网络拓扑信息和测量数据的先验电力线信道建模方法。给出了低压室内电力线载波通信信道模型算例,分析了算例在2~30MHz和2~100MHz两种带宽下的信道特征和参数,并与已有模型进行了对比。结果表明,在同等条件下该文模型与已有模型仿真结果一致,但克服了需要获得大量负载阻抗信息或大量测量数据建模的困难,为多输入多输出电力线载波通信提供了一种具有实用价值的仿真分析方法,对于简化多输入多输出电力线载波信道的研究、设计和工程应用具有重要意义。
