动态频谱分配应用于实际电力线通信系统面临分配策略、实时算法等诸多挑战,到目前为止还未见有公开报道。定义并设计了一个实际的基于正交频分复用(orthogonal frequency division multiplexing,OFDM)的高速窄带电力线通信系统构架,并...动态频谱分配应用于实际电力线通信系统面临分配策略、实时算法等诸多挑战,到目前为止还未见有公开报道。定义并设计了一个实际的基于正交频分复用(orthogonal frequency division multiplexing,OFDM)的高速窄带电力线通信系统构架,并提出一种适用于该系统的动态频谱分配策略和对应的实时实现算法。该算法在任一种调制方式下将子载波进行分组,并对各个子载波组的功率进行排序,选择可用的子载波组,根据速率最大化准则确定最优的调制方式并分配功率。该算法与Hughes-Hartogs算法相比,具有较低的运算复杂度和较少的信令开销,与传统的等功率分配方式相比,误码性能更好。仿真结果和实验结果证明了该算法的有效性和优越性。展开更多
实现电力系统自动需求响应的高速窄带电力线通信(high-speed narrowband power line communication,HNPLC)系统亟需实用、高效的应用层设计来支撑各类响应服务。该文面向自动需求响应服务,定义了双向互动的HNPLC应用层协议架构,并结合...实现电力系统自动需求响应的高速窄带电力线通信(high-speed narrowband power line communication,HNPLC)系统亟需实用、高效的应用层设计来支撑各类响应服务。该文面向自动需求响应服务,定义了双向互动的HNPLC应用层协议架构,并结合系统的多分类服务需求,提出一种综合考虑数据包优先级权重、数据包传输效率和服务等待时间的基于动态优先级的应用层服务响应机制。在构建的跨层HNPLC仿真平台中验证了协议架构的合理性,且计算机仿真结果表明,提出的基于动态优先级的服务响应机制可明显提升HNPLC传输性能,满足自动需求响应的服务要求。展开更多
In the past decade,several efforts around the world were started with the goal of introducing "smart metering" capabilities into the power grid.These efforts have spurred renewed interest in the design of ne...In the past decade,several efforts around the world were started with the goal of introducing "smart metering" capabilities into the power grid.These efforts have spurred renewed interest in the design of next generation Narrowband Power Line Communications(NB-PLC) transceivers.In the past few years,ITU-T and IEEE have standardized a family of next generation OFDM-based NB-PLC transceivers some of which are today being considered for massive deployments in Europe and Asia.This paper addresses the important role that PLC has not only for smart metering but also for many other Smart Grid applications,and also gives an overview of the main differences between these next generation NB-PLC standards.展开更多
文摘动态频谱分配应用于实际电力线通信系统面临分配策略、实时算法等诸多挑战,到目前为止还未见有公开报道。定义并设计了一个实际的基于正交频分复用(orthogonal frequency division multiplexing,OFDM)的高速窄带电力线通信系统构架,并提出一种适用于该系统的动态频谱分配策略和对应的实时实现算法。该算法在任一种调制方式下将子载波进行分组,并对各个子载波组的功率进行排序,选择可用的子载波组,根据速率最大化准则确定最优的调制方式并分配功率。该算法与Hughes-Hartogs算法相比,具有较低的运算复杂度和较少的信令开销,与传统的等功率分配方式相比,误码性能更好。仿真结果和实验结果证明了该算法的有效性和优越性。
文摘实现电力系统自动需求响应的高速窄带电力线通信(high-speed narrowband power line communication,HNPLC)系统亟需实用、高效的应用层设计来支撑各类响应服务。该文面向自动需求响应服务,定义了双向互动的HNPLC应用层协议架构,并结合系统的多分类服务需求,提出一种综合考虑数据包优先级权重、数据包传输效率和服务等待时间的基于动态优先级的应用层服务响应机制。在构建的跨层HNPLC仿真平台中验证了协议架构的合理性,且计算机仿真结果表明,提出的基于动态优先级的服务响应机制可明显提升HNPLC传输性能,满足自动需求响应的服务要求。
文摘In the past decade,several efforts around the world were started with the goal of introducing "smart metering" capabilities into the power grid.These efforts have spurred renewed interest in the design of next generation Narrowband Power Line Communications(NB-PLC) transceivers.In the past few years,ITU-T and IEEE have standardized a family of next generation OFDM-based NB-PLC transceivers some of which are today being considered for massive deployments in Europe and Asia.This paper addresses the important role that PLC has not only for smart metering but also for many other Smart Grid applications,and also gives an overview of the main differences between these next generation NB-PLC standards.
