| 认知无线电系统频谱自适应调度算法设计 |
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| 引用本文： | 徐斌阳,李健颖,李少谦. 认知无线电系统频谱自适应调度算法设计[J]. 电子科技大学学报(社会科学版), 2008, 0(6) |
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| 作者姓名： | 徐斌阳 李健颖 李少谦 |
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| 作者单位： | 电子科技大学通信抗干扰技术国家级重点实验室; |
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| 基金项目： | 国家863计划(2005AA133910) |
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| 摘 要： | 针对认知无线电系统多媒体业务应用,提出了一种基于频谱感知的自适应分组调度算法。该算法通过自适应地调整实时业务和非实时业务间的资源配额,以在空闲频谱资源变化情况下保证实时业务的QoS需求。基于IEEE 802.22无线区域网(WRAN)的认知无线电系统仿真表明,同已有的3种典型分组调度算法M-LWDF、Exp和PF相比较,该频谱自适应分组调度算法可以在变化的空闲频谱条件下为实时业务提供更为可靠的QoS保障,获得更高的系统吞吐量和频谱利用效率。
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| 关 键 词： | 认知无线电 多媒体 分组调度 QoS 频谱利用效率 |
Spectrum-Aware Scheduling Algorithm for Cognitive Radio Multimedia Application |
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| XU Bin-yang,LI Jian-ying,, LI Shao-qian. Spectrum-Aware Scheduling Algorithm for Cognitive Radio Multimedia Application[J]. Journal of University of Electronic Science and Technology of China(Social Sciences Edition), 2008, 0(6) |
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| Authors: | XU Bin-yang LI Jian-ying LI Shao-qian |
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| Affiliation: | XU Bin-yang,LI Jian-ying,, LI Shao-qian (National Key Laboratory of Communication,University of Electronic Science , Technology of China Chengdu 610054) |
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| Abstract: | A spectrum-aware scheduling algorithm is proposed for multimedia applications in cognitive radio system. The algorithm adaptively adjusts the resource share allocated between real-time traffic and non-real-time traffic in varying spectrum environment to provide QoS guarantee for real-time traffic. System simulation based on IEEE 802.22 wireless regional area network shows that the proposed algorithm can provide both better QoS guarantee for real-time traffic and higher system throughput and spectrum utiliza... |
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| Keywords: | cognitive radio multimedia packet scheduling QoS spectrum utilization |
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