正交频分多址接入系统中接收能耗优化的二维时频资源分配算法

正交频分多址接入系统资源分配的结果会直接影响资源分配效率以及各个接收站点的能耗.系统中的多用户系统资源分配问题在一定的标准(例如IEEE 802.16标准)约束下可证明为一个NP完全问题.以IEEE802.16标准为例,由一定的分配准则定义的一种启发式算法(能耗优化的低边数分配算法)可以对资源分配问题进行近似求解.仿真结果表明,和文献中典型的启发式算法相比,该算法可以获得较高的资源分配效率以及较低的接收站点能耗.

Energy Optimized Two-Dimensional Resource Allocation for OFDMA System

Resource allocation efficiency and power consumption of subscriber stations is affected by resource allocation results.Here,it is proved that the resource allocation of OFDMA system in IEEE 802.16 standards is an NP-complete problem.To approximately solve the problem in real time,the energy optimized low edge degree algorithm is proposed,which shows low computational complexity based on a set of allocation rules.Simulation results show that,compared with typical heuristic algorithm reported in literature,the proposed algorithm results in better resource efficiency and reduction of the power consumption required at subscriber stations.