| 一种基于能量检测的双门限协作频谱感知技术 |
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| 引用本文： | 刘会衡,陈伟,刘克中.一种基于能量检测的双门限协作频谱感知技术[J].武汉理工大学学报,2011(4). |
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| 作者姓名： | 刘会衡 陈伟 刘克中 |
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| 作者单位： | 武汉理工大学信息工程学院;江西理工大学应用科学学院; |
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| 基金项目： | 国家自然科学基金(60703099) |
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| 摘 要： | 针对认知用户接收到的信号特点,提出了一种基于能量检测的双门限协作频谱感知技术。当信号能量位于两个门限之间时,由数据融合中心根据最大比合并准则再次进行判决,并结合本地判决结果做出最终决策。仿真结果表明,所提方法可以有效地提高检测概率,降低错误概率。
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| 关 键 词： | 认知无线电 双门限 检测概率 协作频谱感知 能量检测 |
A Double-threshold Cooperative Spectrum Sensing Technology Based on Energy Detection |
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| LIU Hui-heng,CHEN Wei,LIU Ke-zhong.A Double-threshold Cooperative Spectrum Sensing Technology Based on Energy Detection[J].Journal of Wuhan University of Technology,2011(4). |
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| Authors: | LIU Hui-heng CHEN Wei LIU Ke-zhong |
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| Affiliation: | LIU Hui-heng1,2,CHEN Wei1,LIU Ke-zhong1(1.School of Information Engineering,Wuhan University of Technology,Wuhan 430070,China,2.School of Applied Science,Jiangxi University of Science and Technology,Ganzhou 341000,China) |
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| Abstract: | According to the characteristic of signals received by cognitive radio users,a double-threshold cooperative spectrum sensing technology based on energy detection is proposed.When the signal energy falls between two thresholds,the data fusion center will make another adjustment according to maximum-ratio-combining rule and then make a final decision based on it and the local decision results.Simulation results show that this scheme can improve the detection probability and reduce the error probability,signif... |
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| Keywords: | cognitive radio double-threshold detection probability cooperative spectrum sensing energy detection |
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