Spectrum Sensing in the Presence of Multiple Primary Users
Spectrum Sensing in the Presence of Multiple Primary Users
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DOI：
10.1109/tcomm.2012.022912.110073
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发表时间：
2012-05-01
影响因子：
8.3
通讯作者：
Tirkkonen, Olav
中科院分区：
文献类型：
--
作者：
Wei, Lu;Tirkkonen, Olav
研究了认知无线电网络中存在多个主用户时的多天线协同频谱感知问题。在这种情况下，分析了一种基于球面测试的探测器。基于所涉及的分布矩，导出了探测器关键性能指标的简单准确的解析公式。虚警和检测概率、检测阈值和接收机操作特性以封闭形式提供。仿真验证了所得结果的准确性，并在实际传感场景中与其他探测器进行了比较。
We consider multi-antenna cooperative spectrum sensing in cognitive radio networks, when there may be multiple primary users. A detector based on the spherical test is analyzed in such a scenario. Based on the moments of the distributions involved, simple and accurate analytical formulae for the key performance metrics of the detector are derived. The false alarm and the detection probabilities, as well as the detection threshold and Receiver Operation Characteristics are available in closed form. Simulations are provided to verify the accuracy of the derived results, and to compare with other detectors in realistic sensing scenarios.