OFDMA波束赋形中继系统资源分配  

Resource Allocation in OFDMA-Based Beamforming Relay Systems

作　　者：韩斌[1] 王文博[1] 彭木根[1] 

机构地区：[1]泛网无线通信教育部重点实验室(北京邮电大学),北京100876

出　　处：《北京邮电大学学报》2011年第5期46-50,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家科技重大专项项目(2011ZX03003-002-01);霍英东教育基金会应用基础研究项目(122005);新世纪优秀人才支持计划

摘　　要：针对采用波束赋形技术的正交频分多址接入放大转发中继系统,提出了一种以最大化比例公平因子为目标的资源分配算法.该算法基于凸优化理论,对功率分配、子载波配对、中继选择和用户选择进行了联合优化.理论分析和仿真验证结果表明,所提的资源分配算法能以较低的复杂度实现系统资源分配的公平性,并且可以有效利用波束赋形技术,提高系统容量.A resource allocation algorithm that maximizes proportional fairness factor is proposed in the orthogonal frequency division multiple access based amplify-and-forward beamforming relay systems. Based on the convex optimization, the algorithm jointly optimizes power allocation, subcarrier pairing, relay selection and user selection. Both analysis and simulation indicate that the proposed algorithm can achieve fairness of resource allocation and employ beamforming effectively to enhance the system capacity with low computational complexity.

关 键 词：正交频分多址接入 放大转发中继系统 波束赋形 资源分配 凸优化 

分 类 号：TN929.53[电子电信—通信与信息系统]