OFDMA中继系统中基于速率约束的资源调度算法  

Resource scheduling algorithm based on rate constraint in OFDMA relay system

作　　者：杜长平[1] 唐伦[1] 陈前斌[1] 

机构地区：[1]重庆邮电大学移动通信技术重点实验室,重庆400065

出　　处：《电子技术应用》2010年第6期115-118,122,共5页Application of Electronic Technique

基　　金：国家科技支撑计划(2008BAH30B10);新世纪优秀人才支持计划(NCET-06-0778)

摘　　要：针对无线资源调度算法中系统吞吐率与用户公平性之间的矛盾,研究了OFDMA多用户多中继系统中的比例公平调度算法,并提出了基于速率约束的资源调度方案,该方案充分考虑不同用户对传输速率的最小约束,通过给不能满足速率要求的用户增加优先权,使其优先分配子信道,保证了用户的速率QoS要求。仿真结果表明,该方案在满足系统吞吐率的同时能更好地保证用户的公平性。In order to solve the conflict between system throughput and user fairness in wireless resources scheduling algorithm, this paper researched the proportional fairness （PF） scheduling algorithm in a multi-user multi-relay system. It proposed the user rate constraint resource scheduling algorithm. This algorithm fully considers the user rate constraint in different time and the user which have the low priority allocate subchannel firstly until they meet the rate requirements. Simulation results show that the algorithm can meet the system throughput and it is able to better guarantee the user fairness than other algorithms at the same time.

关 键 词：OFDMA 资源调度 速率约束 比例公平 

分 类 号：TN925.5[电子电信—通信与信息系统]