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    Multiple antenna cyclostationary-based detection of primary users with multiple cyclic frequency in Cognitive Radios

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    Date
    2014
    Author
    Sedighi, Saeid
    Taherpour, Abbas
    Khattab, Tamer
    Hasna, Mazen O.
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    Abstract
    In this paper, we study the problem of multiple antenna spectrum sensing by using cyclostationary features of Primary Users (PUs) signals in Cognitive Radios (CRs). We consider the general case of multiple antenna sensing in the presence of spatially and temporally correlated noise when the PU signal has more than one cyclic frequency. We model and formulate the multiple antenna sensing problem as a composite hypothesis testing problem and use the Generalized Likelihood Ratio Test (GLRT) to derive a detector for the general model mentioned above. Then, we also propose the GLRT-based detectors for the two special cases of: 1) spatially uncorrelated but colored noise; 2) spatially white noise. Moreover, in order to calculate the decision threshold, the asymptotic performance of the proposed detectors under the null hypothesis is given. The provided simulation results show the superiority of the performance of the proposed detectors compared to the recently-proposed cyclostationary-based detectors.
    DOI/handle
    http://dx.doi.org/10.1109/GLOCOM.2014.7036906
    http://hdl.handle.net/10576/4275
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    • Electrical Engineering [‎2840‎ items ]

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