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The problem of multiple antenna spectrum sensing in cognitive radio (CR) networks is studied in this paper. We propose two new invariant constant false-alarm rate eigenvalue-based (EVB) detectors, using the higher order moments of the sample covariance matrix eigenvalues, by exploiting the separating function estimation test framework. We find closed-form expressions for the false-alarm and detection...
In this paper, we present the performance evaluation of seven spectrum sensing techniques including four single-stage spectrum sensing and three two-stage spectrum sensing for cognitive radio (CR) systems. We focus on the performance evaluation of these techniques under two types of operative schemes including non-cooperative and cooperative of CR systems when the received signal experiences shadowing...
The purpose of this paper is to compare the performance of eigenvalue-based signal detectors designed for IEEE 802.22Wireless Regional Area Network (WRAN). Two eigenvalue techniques were studied, which are the eigenvalue decomposition (EVD) and singular value decomposition (SVD). Both techniques were implemented on Matlab as detection algorithms. Using Monte Carlo simulations, we tested the algorithms...
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