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基于动态双门限和D-S证据理论的合作频谱感知算法

Keywords: 认知无线电,双门限,D?S证据理论,动态,能量检测

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Abstract:

针对传统能量检测算法门限设置单一且不适应感知信道环境差异的问题,为了提高合作频谱感知结果的可靠性,减小网络开销和融合中心计算的负担,提出了将动态双门限能量检测和D-S证据理论相结合的合作频谱感知算法.在进行本地感知时,该算法可以让认知用户通过双门限能量检测方法直接得到本地判决结果,同时根据信道环境的变化自适应调整双门限值,并在双门限内使用D-S证据理论,感知双门限内未判决结果的信任度函数,将其发往融合中心,这样可以减少融合中心的计算量以及传输带来的网络开销.仿真结果表明,双门限D-S证据理论的融合结果要优于D-S证据理论和OR准则.

References

[1]  Mitila J,Maguire G.Cognitive radio:making software radios more personal[J].IEEE Personal Communication Magazine,1999,6(4):13-18.
[2]  周小飞,张宏纲.认知无线电原理及应用[M].北京:北京邮电大学出版社,2007:3-20.
[3]  Zhou Xiaofei,Zhang Honggang.The Principles and Applications of Cognitive Radio[M].Beijing:Beijing University of Posts and Telecommunications Press,2007:3-20.(in Chinese)
[4]  党建武,李翠然,谢健骊.认知无线电技术与应用[M].北京:清华大学出版社,2012:20-23.
[5]  Dang Jianwu,Li Cuiran,Xie Jianli.The Technology and Applications of Cognitive Radio[M].Beijing:Tsinghua University Press,2012:20-23.(in Chinese)
[6]  Li Jing,Liu Jian,Long Keping.Reliable cooperative spectrum sensing algorithm based on Dempster?Shafer theory[C]//Global Telecommunications Conference(GLOBECOM 2010).Miami,FL:IEEE,2010:1-5.
[7]  Zhu Jiang,Xu Zhengguang,Wang Furong,et al.Double threshold energy detection of cooperative spectrum sensing in cognitive radio[C]//The 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communication.Piscataway:IEEE,2008:1-5.
[8]  Nhan N T,Koo I.Evidence?theory?based cooperative spectrum sensing with efficient quantization method in cognitive radio[J].IEEE Trans on Vehicular Technology,2011,60(1):185-195.
[9]  袁海英,胡瑜.结合循环平稳特征和自适应双门限检测的频谱感知算法[J].计算机辅助设计与图形学报,2013,25(4):573-577.
[10]  Yuan Haiying,Hu Yu.The spectrum sensing algorithm based on cyclostationary feature and adaptive dual-threshold detection[J].Journal of Computer?Aided Design and Computer Graphics,2013,25(4):573-577.(in Chinese)
[11]  Gproakis J.Digital Communications[M].4th ed.New York:McGraw?Hill,2001:163-233.
[12]  Zeng Y,Liang Y C.Covariance based signal detections for cognitive radio[C]//IEEE DysPAN2007.Dublin:IEEE,2007:202-207.
[13]  吕春英,沈国勤,袁誉红,等.基于簇加权的协作频谱感知算法[J].探测与控制学报,2012,34(2):72-76.
[14]  Lü Chunying,Shen Guoqin,Yuan Yuhong,et al.Cooperative spectrum sensing algorithm based on weighted clustering[J].Journal of Detection & Control,2012,34(2):72-76.(in Chinese)
[15]  冯文江,秦春玲,李林.自适应双门限频谱感知算法[J].华中科技大学学报:自然科学版,2010,38(12):20-23.
[16]  Feng Wenjiang,Qin Chunlin,Li Lin.Adaptive double?threshold spectrum sensing algorithm[J].Journal of Huazhong University of Science and Technology:Natural Science Edition,2010,38(12):20-23.(in Chinese)
[17]  宋志群,刘玉涛,王荆宁.认知无线电技术及其应用[M].北京:国防工业出版社,2012:63-69.
[18]  Song Zhiqun,Liu Yutao,Wang Jinning.Cognitive Radio Technology and Its Applications[M].Beijing:National Defense Industry Press,2012:63-69.(in Chinese)

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