| 基于异步分布式检测的协作频谱感知研究 |
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| 引用本文： | 张冰玉,郑宝玉,岳文静.基于异步分布式检测的协作频谱感知研究[J].南京邮电大学学报(自然科学版),2011,31(3):27-32. |
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| 作者姓名： | 张冰玉 郑宝玉 岳文静 |
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| 作者单位： | 1. 南京邮电大学信号处理与传输研究院,江苏南京,210003
2. 南京邮电大学信号处理与传输研究院，江苏南京210003;上海交通大学电子工程系，上海200240 |
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| 基金项目： | 国家自然科学基金(60972039,60905040); 国家高技术研究发展计划(863计划)(2009AA01Z241)资助项目 |
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| 摘 要： | 构建了一种基于异步分布式检测的协作频谱感知(CSS)模型,推导了此模型在贝叶斯准则下的最优融合方案,并提出了一种不需要主用户先验信息的次优方案——最大后验概率(MAP)检测-K/N规则融合方案.分别对采用这两种方案时,协作频谱检测的虚警概率和检测(漏检)概率性能进行了理论分析和仿真,仿真结果显示两种方案都能有效提高频谱...
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| 关 键 词： | 认知无线电 协作频谱感知 异步分布式检测 贝叶斯准则 最大后概率检测 |
Cooperative Spectrum Sensing Based on Asynchronous Distributed Detection |
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| ZHANG Bing-yu,ZHENG Bao-yu,YUE Wen-jing.Cooperative Spectrum Sensing Based on Asynchronous Distributed Detection[J].Journal of Nanjing University of Posts and Telecommunications,2011,31(3):27-32. |
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| Authors: | ZHANG Bing-yu ZHENG Bao-yu YUE Wen-jing |
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| Institution: | ZHANG Bing-yu1,ZHENG Bao-yu1,2,YUE Wen-jing1(1.Institute of Signal Processing & Transmission,Nanjing University of Posts and Telecommunications,Nanjing 210003,China2.Department of Electronic Engineering,Shanghai Jiaotong University,Shanghai 200240,China) |
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| Abstract: | We propose a cooperative spectrum sensing(CSS) model based on asynchronous distributed detection.An optimal fusion rule of it is derived,and a suboptimal scheme,maximum posteriori probability(MAP) detection-K/N fusion scheme is developed,which does not require prior knowledge of primary user.The probabilities of false alarm and(miss) detection by using these two schemes respectively are theoretically analyzed and then simulated.Simulation results show that both of them could improve spectrum sensing reliabi... |
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| Keywords: | cognitive radio cooperative spectrum sensing asynchronous distributed detection Bayesian rule MAP detection |
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