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基于QoS保证的多用户OFDM系统跨层资源分配 被引量：1

QoS-guarantee cross-layer resource allocation for multi-user OFDM system
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摘要 针对正交频分复用(OFDM)系统资源分配和调度问题,提出一种基于第三代移动通信长期演进(LTE)系统的分块跨层资源分配算法。此算法考虑物理层的信道状态信息、媒体接入层(MAC)的有限用户缓存队列长度、用户的丢失率和时延等QoS要求,以提高系统频谱效率为总体目标。通过从实时视频业务和混合业务两种业务类型下进行大量对比分析,得出提出的算法能有效提高系统的频谱效率和降低系统时延。 A block-based cross-layer resource allocation algorithm for LTE downlink OFDM system resource allocation and scheduling problem is proposed.This algorithm takes into account the physical layer channel state information,the media access layer（MAC） of the limited user buffer queue length and the user＇s QoS requirements such as loss rate and delay to improve the system spectral efficiency as the overarching goal.Through a lot of comparative analysis on real-time video service and mixed services show that the proposed algorithm can effectively improve the spectral efficiency and reduce system latency.
作者 刘金波
机构地区 西南交通大学信息科学与技术学院
出处 《信息技术》 2011年第5期54-59,共6页 Information Technology
关键词 QOS保证 多用户 OFDM系统 跨层资源分配 QoS-guarantee multi-user OFDM system cross-layer resource allocation
分类号 TN929.5 [电子电信—通信与信息系统]
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参考文献10

  • 1Jang J, Lee K B. Transmit Power Adapation for Multi-user OFDM systems [ J ]. IEEE Select. Areas Commun, February2003,21 : 171 -178.
  • 2Shen Z, Andrews J G, Evans B L. Optimal Power Allocation in Multiuser OFDM Systems[ C ]. Proc. IEEE Global Communi-cations Conference, San Francisco, CA, Dec. 2003:337 - 341.
  • 3KOUTSOPOULOS I, TASSIULAS L. Cross-layer ada-ptive techniques for throughput enhancement in wireless OFDM-based networks[ J]. IEEE/ACM Transaction on netwo-rking, 2006, 14: 1056 - 1066.
  • 4Zhang X, Zhou E, Zhu R, et al, Adaptive multiuser radio resource allocation for OFDMA systems [ J ]. IEEE Global Telecommunications Conference,GLOBECOM05. Dec. 2005, 6:3845 - 3850.
  • 5Shen Z K, Andrews J G, Evans B L. Adaptive resource allocation in multiuser OFDM systems with proportional rate constraints [ J ]. IEEE Transactions on Wireless Communica-tions. Nov. 2005, 4 C6) :2726 -2737.
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同被引文献5

  • 1郑华晋;刘晓林.基于QoS的LTE下行分组调度算法[J]计算机工程,2012(01):289-291.
  • 2BAI Bo,CAO Zhigang. QoS guaranteed cross-layer multiple traffic scheduling in TDM-OFDMA wireless network[A].[S.l.]:IEEE Press,2008.2895-2900.
  • 3LI Peng,CHANG Yilin,FENG Nina. A cross-layer algorithm of packet scheduling andresource allocation for multi-user wireless video transmission[J].IEEE Transactions on Consumer Electronics,2011,(03):1128-1134.
  • 4钱耘之,任参军,唐苏文,陈明.基于多业务QoS的LTE下行资源分配算法[J].通信技术,2010,43(4):190-192. 被引量：10
  • 5李校林,付澍,胡楠.一种基于LTE业务特征的调度算法切换系统[J].电讯技术,2011,51(3):93-97. 被引量：5

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信息技术
2011年 第5期

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