OFDMA中继系统资源分配算法研究  

Study of resource allocation algorithm for downlink channel in OFDMA relay system

作　　者：黄高飞[1] 郑晖[1] 严一尔[1] 唐冬[1] 

机构地区：[1]广州大学机械与电气工程学院,广东广州510006

出　　处：《广州大学学报（自然科学版）》2012年第2期59-64,共6页Journal of Guangzhou University:Natural Science Edition

摘　　要：为了公平且有效地在OFDMA中继系统下行链路进行资源分配,文章提出了基于效用函数的资源分配算法,并根据凸优化问题的对偶分解理论,提出了一种分布式求解算法,得到了相关问题的全局最优解.理论分析和数值仿真结果表明,文章提出的资源分配算法具有较低的系统复杂度,可以使系统效用函数最大,从而在保证用户公平性的前提下,使系统的和速率容量最大.To allocate resource fairly and efficiently in the downlink channel in OFDMA relay system,a utility-based resource allocation algorithm is proposed in this paper.According to the dual decomposition methods of convex optimization theory,a distributed algorithm is developed to solve the involved problem and obtain the global optimal solution.The theoretic analysis and numerical simulation results show that our algorithm has low complexity,and the system utility is maximized so that the sum-rate capacity of the system is maximized while the fairness of users in the system is guaranteed.

关 键 词：正交频分多址接入(OFDMA) 中继 资源分配 凸优化 

分 类 号：TN911[电子电信—通信与信息系统] TN925[电子电信—信息与通信工程]