一种自适应的OFDMA系统下行分组调度算法

A Dynamic Packet Schedule Algorithm in Downlink OFDMA Systems

提出了一种适合于OFDMA（正交频分多址接入）系统的资源分配与调度算法,该算法利用物理层的信道信息和MAC层的队列状态信息,并综合考虑了数据分组传输的时延要求和业务的优先级,采取资源块与子载波分配相结合的资源分配方式。仿真结果表明,该算法在吞吐量和公平性方面都得到了较好的改善。

A resource allocation and scheduling algorithm in an orthogonal frequency division multiple access（OFDMA） systems is proposed.The proposed algorithm fully considers the physical layer channel and MAC layer buffers information,users＇requirements on delay and service priority,In which resource block scheduling and subcarrier allocation are performed in a combined manner.It is demonstrated in the simulation result that the proposed algorithm can improve system performance in terms of throughput and fairness.