基于公平因子的宽带电力线OFDM系统跨层资源分配  

Cross-layer Resource Allocation for Broadband Power Line OFDM System Based on Fairness Factor

作　　者：段瑞超[1] 翟峰[2] 陆俊[1] 龚钢军[1] 

机构地区：[1]华北电力大学电气与电子工程学院,北京102206 [2]中国电力科学研究院,北京100192

出　　处：《现代电力》2015年第4期79-84,共6页Modern Electric Power

基　　金：国家自然科学基金项目(51007021);国家重大专项项目(2010ZX03006-005)

摘　　要：针对宽带电力线通信OFDM系统的资源优化分配问题,在分析低压宽带电力线通信系统网络结构的基础上,建立资源不足且存在多种实际约束下多业务多用户在多子载波上的资源分配模型,提出一种基于公平因子及用户紧急度的跨层资源分配算法,在保证RT用户最小速率及NRT用户间公平性的同时最大化系统吞吐量。典型电力线信道环境下的仿真结果表明,算法在满足资源分配模型优化目标下性能更优。For the optimal resources allocation of broadband power line communication OFDM system, the network structure of lowvoltage broadband power line communica tion system is analyzed in this paper, based on which the re sources allocation model of multiple subcarriers for multi users and multiservices is built under such cases as lack re sources and many application constraints, and a crosslayer resource allocation algorithm based on fairness factor and user emergency is proposed to maximize system throughput by both meeting the minimum rate demand of RT business and ensuring fairness among NRT users. The simulation is implemented in a typical power line channel environment, and results show that proposed algorithm has better per formance with the target of satisfying resource allocation model.

关 键 词：宽带电力线通信 跨层 资源分配 公平性 

分 类 号：TM734[电气工程—电力系统及自动化]