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针对多用户正交频分复用系统,提出一种新的适合于混合业务的加权比例公平自适应粒子群跨层资源分配算法(WAPCRA).该算法在媒体接入控制层进行加权比例公平调度;在物理层将自适应粒子群算法引入其资源分配,并推导出一种新的功率分配方式.仿真结果表明,WAPCRA能在低复杂度、保证用户公平性和满足用户业务流时延需求的基础上,有效提高系统总速率.
Aiming at multi-user orthogonal frequency division multiplexing system, this paper proposes a new adaptive cross-layer resource allocation algorithm based on weighted fair proportion adaptively for mixed services (WAPCRA). This algorithm performs weighted proportional fair scheduling in the media access control layer ; At the physical layer, adaptive Particle Swarm Optimization (PSO) is introduced into its resource allocation, and a new power allocation method is deduced. Simulation results show that WAPCRA can be used in low complexity, user fairness and time delay Based on the effective increase the total system rate.