A Low-Complexity Spectrum Sensing Method for Noncircular Signal in Cognitive Radio Networks With Multiple Receive Antennas
A Low-Complexity Spectrum Sensing Method for Noncircular Signal in Cognitive Radio Networks With Multiple Receive Antennas
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具有多个接收天线的认知无线电网络中非圆形信号的低复杂度频谱感知方法
DOI:
10.1109/lcomm.2019.2916863
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发表时间:
2019-05
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影响因子:
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通讯作者:
i
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文献类型:
--
作者:
Chen An Zhi;Shi Zhi Ping;Sun Hongxia;He Zhen Qing;Bu Fan;Yang D;i
This letter concentrates on the spectrum sensing (SS) problem for noncircular (NC) signal in multiantenna cognitive radio networks. A novel detection method called NC local average variance (NC-LAV) is developed to exploit the NC characteristic of the primary signals for SS. The distribution of the NC-LAV statistic in the absence of primary user is first derived. Then, based on the derived distribution, we present an asymptotic threshold determination of the proposed NC-LAV method. Compared to the peer methods, the proposed NC-LAV method exhibits much lower complexity. Meanwhile, the simulation results reveal that the proposed method achieves better performance than several state-of-the-art methods.
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DOI:
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IEEE Communications Letters
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