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Electronics 2014, 3(3), 553-563; https://doi.org/10.3390/electronics3030553

Cognitive Spectrum Sensing with Multiple Primary Users in Rayleigh Fading Channels

Department of Electrical and Computer Engineering., Ryerson University, Toronto, ON M5B 2K3, Canada
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Received: 27 May 2014 / Revised: 3 September 2014 / Accepted: 12 September 2014 / Published: 23 September 2014
(This article belongs to the Special Issue Cognitive Radio: Use the Spectrum in a More Efficient Way)
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Abstract

Accurate detection of white spaces is crucial in cognitive radio networks. Initial investigations show that the accurate detection in a multiple primary users environment is challenging, especially under severe multipath conditions. Among many techniques, recently proposed eigenvalue-based detectors that use random matrix theories to eliminate the need of prior knowledge of the signals proved to be a solid approach. In this work, we study the effect of Rayleigh multipath fading channels on spectrum sensing in a multiple primary user environment for a pre-proposed detector called the spherical detector using the eigenvalue approach. Simulation results show interesting outcomes. View Full-Text
Keywords: cognitive radio (CR); spectrum sensing; spherical detector; Rayleigh fading channels cognitive radio (CR); spectrum sensing; spherical detector; Rayleigh fading channels
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Al-Juboori, S.; Hussain, S.J.; Fernando, X. Cognitive Spectrum Sensing with Multiple Primary Users in Rayleigh Fading Channels. Electronics 2014, 3, 553-563.

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