OFDMA系统中基于有限反馈的资源公平调度算法  

Fair resource scheduling based on limited feedback in OFDMA system

作　　者：张冬梅[1] 王金龙[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《解放军理工大学学报（自然科学版）》2005年第2期103-107,共5页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目 ( 6 0 3 72 0 80 )

摘　　要：OFDMA是下一代无线通信系统中在下行链路上实现大容量通信的一种有前途的技术,其中的关键技术之一是在共享信道的用户间公平合理地分配子载波和功率。分析了功率约束下系统最大吞吐量的实现方法,提出了一种基于有限反馈的资源公平调度算法,这种算法具有系统所需反馈信息量少、用户间公平性好等性能。Orthogonal frequency division multiple access (OFDMA)is a promising technique for achieving high downlink capacities in next generation wireless communication system. A key issue in OFDMA is the allocation of the sub-carriers and power among users sharing the channel. The realization of the maximum system throughputs under power limitation was analyzed, and a fair resource scheduling algorithm based on limited feedback proposed. Simulation results show that the proposed algorithm needs only a little feedback information and has fairness among users.

关 键 词：调度算法 FDMA系统 反馈 资源 有限 无线通信系统 OFDMA 最大吞吐量 下行链路 关键技术 功率约束 大容量 子载波 信息量 公平性 户间 信道 

分 类 号：TN929.531[电子电信—通信与信息系统] TP301.6[电子电信—信息与通信工程]