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应用于MIMO-OFDMA下行链路的分组调度算法

刘壮 李曦 纪红

刘壮, 李曦, 纪红等 . 应用于MIMO-OFDMA下行链路的分组调度算法[J]. 北京航空航天大学学报, 2014, 40(10): 1451-1456. doi: 10.13700/j.bh.1001-5965.2013.0616
引用本文: 刘壮, 李曦, 纪红等 . 应用于MIMO-OFDMA下行链路的分组调度算法[J]. 北京航空航天大学学报, 2014, 40(10): 1451-1456. doi: 10.13700/j.bh.1001-5965.2013.0616
Liu Zhuang, Li Xi, Ji Honget al. Packet scheduling algorithm for multi-service MIMO-OFDMA downlink systems[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(10): 1451-1456. doi: 10.13700/j.bh.1001-5965.2013.0616(in Chinese)
Citation: Liu Zhuang, Li Xi, Ji Honget al. Packet scheduling algorithm for multi-service MIMO-OFDMA downlink systems[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(10): 1451-1456. doi: 10.13700/j.bh.1001-5965.2013.0616(in Chinese)

应用于MIMO-OFDMA下行链路的分组调度算法

doi: 10.13700/j.bh.1001-5965.2013.0616
基金项目: 北京高等学校青年英才计划资助项目(YETP0432);国家863计划资助项目(2012AA01A508);国家青年科学基金资助项目(61302080)
详细信息
    作者简介:

    刘壮(1989-),男,陕西榆林人,硕士生,liuzhuang0823@163.com.

  • 中图分类号: TN91

Packet scheduling algorithm for multi-service MIMO-OFDMA downlink systems

  • 摘要: 提出了一种基于效用函数的应用于多输入多输出正交频分复用接入 (MIMO-OFDMA, Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing Access )系统下行链路的分组调度算法.该算法在调度时不仅考虑物理层的信道状况,还利用基站发送缓冲区的状态信息和用户反馈回来的ARQ(Automatic Repeat-request)信息来帮助基站做出调度决策.针对系统中多种业务的不同服务质量(QoS,Quality of Service)要求,分别设计了其效用函数,并将调度决策问题转化成一个系统总效用函数值最大化问题.同时考虑到实际的长期演进计划(LTE,Long Term Evolution) 系统中对子载波共享的限制条件,提出了一种可以降低实际复杂度的启发式算法用于求解该最优化问题.仿真结果表明,该算法不但在保证实时业务用户QoS要求方面要好于传统的调度算法,还能获得较好的系统总容量和丢包率性能.

     

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出版历程
  • 收稿日期:  2013-10-30
  • 网络出版日期:  2014-10-20

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