OFDMA协同通信系统资源分配算法

提出了一种OFDMA协同蜂窝网中满足用户QoS需求且兼顾用户公平性的子载波和功率联合分配算法。针对已有算法仅考虑平均功率下的子载波分配、中继节点存在未用功率的情况,研究了子载波分配完毕后中继节点剩余功率最优分配问题。给出了一种基于二分法的功率注水分配方案。仿真结果表明,所提出的子载波和功率联合分配算法能够在满足用户QoS需求及公平性的同时,进一步提高网络吞吐量。

Resource Allocation Algorithm for OFDMA-based Cooperative Communication Systems

Taking users' demand for both QoS and fairness into account,a joint sub-carrier and power allocation algorithm was proposed for OFDMA-based cooperative cellular networks. Existing sub-carrier allocation algorithm considers only average power allocation, in which incomplete application of power in relaying nodes exists. As a versus, we studied the optimal residual power allocation on the completion of sub-carrier allocation. Consequently, a water-filling power allocation scheme ground on dichotomy was given. Simulation shows that our proposed joint allocation algorithm can satisfy users' need for QoS and fairness,while it boosts the networking throughput dramatically.