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基于分群的自适应双门限合作频谱感知 被引量：4

Adaptive dual threshold cooperative spectrum sensing based on grouping
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摘要 针对认知无线电系统中,通知信道不理想对传统合作频谱感知的不利影响,提出了一种改进的合作频谱感知机制:认知用户被分成若干群,选择群内通知信道增益最大的认知用户为中心节点,采用自适应双门限机制负责群内合作频谱检测,并将检测结果报告给认知基站进行合并以确定授权用户是否存在。仿真结果表明:相对传统的合作频谱感知,该机制能降低通知信道误码率,并且在保证检测性能的前提下,减少了认知系统频谱感知过程中的平均数据开销。 An improved cooperative spectrum sensing mechanism is proposed to mitigate the adverse effects of the conventional cooperative spectrum sensing mechanism over unfavorable reporting channels in Cognitive Ratio （CR） system. All CR users are divided into several groups. In each group, the CR user with the largest reporting channel gain is selected as the central node. After performing cooperative spectrum sensing with adaptive dual threshold, the central node forwards its sensing result to the Cognitive Ratio Base Station （SRBS）. Then the CRBS fuses the results from all
作者 丁汉清 杨家玮 赵志远
机构地区 西安电子科技大学综合业务网理论及关键技术国家重点实验室 郑州轻工业学院计算机与通信工程学院
出处 《吉林大学学报（工学版）》 EI CAS CSCD 北大核心 2011年第2期537-542,共6页 Journal of Jilin University:Engineering and Technology Edition
基金 国家重点实验室基金项目(ISN02080001) '973'国家重点基础研究发展规划项目(2009CB320404) 高等学校创新引智计划项目(B08038)
关键词 通信技术 认知系统 合作频谱感知 自适应双门限 communication cognitive system cooperative spectrum sensing adaptive dual threshold
分类号 TN911.23 [电子电信—通信与信息系统]
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参考文献13

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二级参考文献10

  • 1张惠娟,周利华,翟鸿鸣.一种基于非合作博弈的均衡路由方法[J].西安电子科技大学学报,2007,34(3):398-401. 被引量：7
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共引文献23

同被引文献38

  • 1MITOLA J,MAGUIRE G Q. Cognitive radios :making software radios more personal[J]. IEEE Personal Communica- tions, 1999,6(4) : 13-18.
  • 2WANG Long,WANG Jin-long,DING Guo-ru,et al. A survey of cluster-based cooperative spectrum sensing in cogni- tive radio networks[C]//IEEE Cross Strait Quad-Regional Radio Science and Wireless Technology Conference. New York :IEEE Press, 2011 : 247-251.
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  • 8Haykin S. Cognitive radio., brain-empowered wire-less communications[J]. IEEE Journal on Selected Areas in Communications, 2005, 23(2): 201-220.
  • 9Fu Shuang, Li Yi-bing, Ye Fang. Spectrum sensing technology defending against SNR attack based on geographic location information [J]. Journal of Information and Computational Science, 2012, 9 (13) 3721-3729.
  • 10Kim H, Shin K G. Efficient discovery of spectrum opportunities with mac-layer sensing in cognitive radio networks [J]. IEEE Transactions on Mobile Computing, 2008, 7(5): 533-545.

引证文献4

二级引证文献6

吉林大学学报（工学版）
2011年 第2期

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