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一种适用于多用户OFDM系统下行链路的跨层设计调度算法 被引量：2

A Cross-Layer Scheduling Algorithm for Downlink of Multi-user OFDM System
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摘要 该文提出了一种适用于多用户正交频分复用(OFDM)系统下行链路的调度算法,基于跨层结构设计,并分别考虑了媒体接入控制(MAC)层的用户服务质量(QoS)要求、用户公平性、数据包队列状态信息以及物理层的信道状态信息(CSI)和功率约束等。多用户OFDM系统可以通过该调度算法充分利用MAC层和物理层的不同参数特性,在保证用户QoS的同时最大化频谱的利用效率。仿真结果表明,在小区内各个移动用户具有不同的接收SNR的情况下,该算法具有服务质量随信噪比波动平缓、丢包率低、实现复杂度低等特点。 A cross-layer scheduling algorithm for downlink of multi-user OFDM system is proposed, the algorithm considers user＇s QoS requirement, fairness, packet queue state information of MAC layer and channel state information, power constraint of physical layer. Multi-user OFDM system can make efficient use of different parameter characters of the both layers through the proposed Mgorithm, to achieve the goal of guarantee user＇s QoS and maximize wireless resource utility efficiency. Simulation results show that when mobile users have different receive SNR, the proposed algorithm has steady QoS, low drop rate and low complexity.
作者 马月槐 张冬梅 蔡跃明 徐友云
机构地区 解放军理工大学通信工程学院无线通信系
出处 《电子与信息学报》 EI CSCD 北大核心 2008年第2期421-425,共5页 Journal of Electronics & Information Technology
基金 国家自然科学基金(62672079) 江苏自然科学基金(BK2006701)
关键词 多用户OFDM系统 队列状态信息 跨层调度算法 QOS Multi-user OFDM system Queue state information Cross-layer scheduling algorithm QoS
分类号 TN92 [电子电信—通信与信息系统]
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参考文献9

  • 1Berezdivin R, and Breinig R, et al.. Next-generation wireless communications concepts and technologies. IEEE Communications Magazine, 2002, 40(3): 108-116.
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同被引文献27

  • 1SHEN ZUKANG, ANDREWS J G, EVANS B L. Adaptive resource allocation in multiuser OFDM systems with proportional rate con- straints [ J]. IEEE Transactions on Wireless Communications, 2005, 4(6) : 2726 - 2737.
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  • 3NAN ZHOU, XU ZHU, YI HUANG, et al. Low complexity cross- layer design with Packet dependent scheduling for heterogeneous traffic in multiuser OFDM Systems [ J]. IEEE Transactions on Wire- less Communications, 2010, 9(6) : 1912 - 1923.
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  • 6JEONG S S,JEONG D G,JEONG W S.Cross-layer design of packet scheduling and resource allocation in OFDMA wireless multimedia networks[A].IEEE VTC2006-Spring[C].Melbourne,Vic,2006.309-313.
  • 7BASHAR M S A,DING Z,LI Y.QoS aware resource allocation for heterogeneous multiuser OFDM wireless networks[A].IEEE SPAWC 2008[C].Recife,2008.535-539.
  • 8ITU-T Recommendation G1080.Quality of Experience Requirements of IPTV Services[S].2008.
  • 9KIM H J,LEE D H,LEE J M.The QoE evaluation method through the QoS-QoE correlation model[A].In 4th ICNCAIM[C].Gyeongju,2008.719-725.
  • 10PIAMRAT K,VIHO C,KSENTINI A,et al.Quality of experience measurements for video streaming over wireless networks[A].6th ICITNG[C].Las Vegas,NV,2009.1184-1189.

引证文献2

二级引证文献7

电子与信息学报
2008年 第2期

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