具有时延约束的功率分配技术

Power allocation scheme for delay-constrained communication

综合考虑业务时延敏感特性和信道质量,给出时变信道下多用户系统有效容量表达式,提出基于有效容量的多用户功率分配算法（MPAS）。仿真结果表明,与最大化吞吐量为目标的注水算法和用户功率分配次优算法相比,MPAS能够获得10%～20%的有效容量增益,有效地满足业务的时延要求。

This paper focuses on the power allocation scheme for delay-constrained communication with delay requirements and time-varying channels. We formulate the effective capacity of the multiuser system for time-varying channel and propose the multiuser power allocation scheme（ MPAS）based on effective capacity. Simulation results show that MPAS achieves 10% ～ 20% effective capacity gain over the water-filling algorithm aimed at throughput maximization as well as the suboptimum power allocation algorithm.