多小区OFDMA系统的分布式资源分配方案  

A Distributed Resource Allocation Scheme for Multi-cell OFDMA Systems

作　　者：孙治水[1] 尹长川[1] 乐光新[1] 

机构地区：[1]北京邮电大学数字通信与信息网络实验室,北京100876

出　　处：《电子与信息学报》2007年第6期1295-1298,共4页Journal of Electronics & Information Technology

基　　金：国家"863"计划(2003AA12331004);国家自然科学基金(60472070);国家科技攻关计划重大项目(2003BA808A16);教育部科学技术研究重点项目(105035)资助课题

摘　　要：该文研究了多小区OFDMA系统中下行链路的资源分配问题,主要考虑同信道干扰和频率选择性衰落对资源分配的影响,提出一种基于基站的分布式分配方案,同时考虑用户的服务质量要求(QoS)及公平性,完成子载波和功率的联合分配。算法只要求基站间简单的子载波使用计数的信息交换,不会给系统带来很大的信令负载。仿真表明,通过调整参数,该算法可以取得不同性能间的折衷。In this paper, a distributed resource allocation scheme is developed for OFDMA cellular systems in a downlink transmission. The major impairments considered are co-channel interference and frequency selective fading. The allocation problem includes assignment of sub-carriers, bit loading and power control for multiple users considering their individual QoS as well as the fairness. Exchanging the simple occupation of sub-carriers among cells, the scheme does not result in heave signal load. Simulation results show that the allocation scheme can achieve the tradeoff among different performance objects by adjusting the parameters.

关 键 词：OFDMA 多小区 分布式算法 蜂窝网络 资源分配 

分 类 号：TN915.07[电子电信—通信与信息系统]