华中科技大学学报：自然科学版2012，Vol.40Issue(7)：100-105,6.
OFDMA系统中支持混合业务的跨层资源分配算法
Cross-layer resource allocation algorithm to support hybrid traffics for OFDMA system
摘要
Abstract
For the issue of resource allocation in downlink orthogonal frequency division multiple access（OFDMA）system,a cross-layer resource allocation algorithm for joint subcarrier,power and bit allocation to support hybrid traffics was proposed.Average delay control factor and packet-loss rate control factor were introduced as control parameters for quality of service（average delay and packetloss rate）of delay-sensitive（DS）traffics.By the joint allocation scheme which optimized a user′s power and bit allocation immediately after the user had been allocated a subcarrier,system power efficiency was maximized.Simulation results show that the proposed algorithm not only can guarantee quality of service（QoS）of different DS traffics simultaneously but also can improve average throughput of non-delay-sensitive（NDS）traffics and ensure the fairness between users.By adjusting two control factors,the proposed algorithm not only can meet different QoS requirements of DS users also can achieve different trade-offs between DS users′QoS and average throughput of NDS users so as to satisfy different system design requirements.关键词
服务质量/资源分配/正交频分多址接入/平均时延/吞吐量Key words
quality of service/resource allocation/orthogonal frequency division multiple access/average delay/throughput分类
电子信息工程引用本文复制引用
赵志信,郭庆..OFDMA系统中支持混合业务的跨层资源分配算法[J].华中科技大学学报：自然科学版,2012,40(7):100-105,6.基金项目
国家科技重大专项基金资助项目 （）
黑龙江省教育厅科学技术研究项目 （）
