协作分簇多频带超宽带系统资源优化分配算法

为获得分集增益,减小算法复杂度,以簇作为最小资源分配粒度,将协作分集技术引入到分簇多频带超宽带系统中,提出改进的时频码（TFC：Time-Frequency Coded）模型。基于凸优化理论,提出在总功率受限情况下最大化系统容量的簇分配算法和功率分配二维递归算法。为降低算法复杂度,又进一步提出以用户对簇的相对需求度为判断的快速跨层资源优化分配算法。仿真表明,快速跨层资源优化分配算法可以在满足用户服务质量要求（QoS）的同时,在系统容量和用户之间公平性方面得到很好的折衷。

Resource Allocation Algorithm of Cooperative Clustered MB-OFDM-UWB System

To achieve diversity gain and reduce algorithm complexity,cooperative diversity is employed to cluster MB-OFDM（Multiband orthogonal Frequency Division Multiplexing）UWB systems,in which cluster is the minimum granularity of resource allocation.Improved TFC（Time-Frequency Coded）model is proposed.We propose a cluster allocation and planar recursion power allocation algorithm based on convex optimal theory for the purpose of maximum system capacity under the overall power limitation.To reduce the complexity of algorithm,a quick cross-layer allocation algorithm judged by the relative requirement of cluster is further introduced.Simulation results show that this algorithm can satisfy users＇QoS requirement,achieve a good tradeoff between system throughput and the fairness.