双参数跨层自适应资源分配算法研究

Research on Double Parameters Cross-layer Adaptive Resource Allocation Algorithm

针对多用户OFDM系统,该文提出了一种适合于混合业务的双参数跨层自适应资源分配方案,它只需调整时延补偿因子和吞吐量补偿因子两个参数,就可将现有的调度算法灵活高效地应用于系统中。仿真结果表明,该方案可以灵活地在系统功率效率和用户服务质量满意度之间取得折衷,并保证不同类型业务用户间的公平性。

A double parameters cross-layer adaptive resource allocation scheme for multiuser OFDM system witn heterogeneous types of traffic is proposed in this paper. By dynamically adjusting values of the two parameters： ＂delay compensatory factor＂ and ＂throughput compensatory factor＂ respectively, existing scheduling algorithms can be utilized flexibly and efficiently in the OFDM system. Simulations show that the scheme can achieve diverse levels of tradeoff between system power efficiency and traffic QoS satisfaction flexibly and fairness among different types of traffic can be guaranteed.