| 认知无线电网络中的一种新型协作频谱感知方法 |
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| 引用本文： | 朱江,黄本雄,王芙蓉,张波.认知无线电网络中的一种新型协作频谱感知方法[J].小型微型计算机系统,2010,31(2). |
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| 作者姓名： | 朱江 黄本雄 王芙蓉 张波 |
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| 作者单位： | 华中科技大学,电子与信息工程系,湖北武汉430074 |
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| 基金项目： | 国家自然科学基金项目，"网络编码和网络拓扑关联性研究"，新世纪优秀人才支持计划"新一代异构无线网络组织理论及多层次移动性管理关键问题研究" |
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| 摘 要： | 提出一种能够应用于认知无线电网络中的新型协作频谱感知方法--双阚值能量检测,该方法同时利用了次要用户的接收信号能量和局部判决结果两种信息,由判决中心结合次要用户的局部判决结果和接收信号能量,做出最终判决从而确定主要用户存在与否.该方法在通信流量增加不多的情况下能够充分提升检测性能.仿真结果表明当接收信号能量落入延迟判决区间的概率较大时,该算法能够显著地改善认知无线电网络的协作频谱感知能力.
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| 关 键 词： | 双阈值 能量检测 协作频谱感知 认知无线电 |
Novel Method of Cooperative Spectrum Sensing in Cognitive Radio Networks |
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| ZHU Jiang,HUANG Ben-xiong,WANG Fu-rong,ZHANG Bo.Novel Method of Cooperative Spectrum Sensing in Cognitive Radio Networks[J].Mini-micro Systems,2010,31(2). |
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| Authors: | ZHU Jiang HUANG Ben-xiong WANG Fu-rong ZHANG Bo |
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| Affiliation: | ZHU Jiang,HUANG Ben-xiong,WANG Fu-rong,ZHANG Bo(Department of Electronics , Information Engineering,Huazhong University of Science , Technology,Wuhan 430074,China) |
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| Abstract: | Cognitive radio has become an effective theory to solve the inefficiency of the spectrum usage,and cooperative spectrum sensing among the secondary users to detect the primary user accurately is broadly studied before. In this paper,we employ a double threshold method in energy detector to perform spectrum sensing,while a fusion center in the cognitive radio network collects the local decisions and observational values of the secondary users,and then makes the final decision to determine whether the primary... |
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| Keywords: | double threshold energy detect cooperative spectrum sensing cognitive radio |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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