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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。
Based on the analysis of network structure of low-voltage broadband power line communication system, aiming at resource allocation problem of OFDM system with wideband power line communication, a resource allocation model based on multi-sub-carrier and multi-service multi-user with insufficient resources is established. A cross-layer resource allocation algorithm based on fairness factor and user urgency maximizes system throughput while ensuring the minimum RT user rate and fairness among NRT users. The simulation results under the typical power line channel environment show that the algorithm has better performance under the goal of resource allocation model optimization.