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TitleExtension of quickest spectrum sensing to multiple antennas and rayleigh channels
Publication TypeJournal Article
Year of Publication2013
AuthorsHanafi, E., Martin P.A., Smith P.J., and Coulson A.J.
JournalIEEE Communications Letters
Pagination625 - 628
Date Published2013
ISSN10897798 (ISSN)
KeywordsCognitive radio, CUSUM, Gaussian channels, Multiple antenna, Probability density function, Radio systems, Rayleigh channel, Rayleigh fading, Receiving antennas, Spectrum sensing, Telecommunication
AbstractIn this letter, we study quickest spectrum sensing for cognitive radios with multiple receive antennas in Gaussian and Rayleigh channels. We derive the probability density function for the fading case and analytically compute the upper bound and asymptotic worst-case detection delay for both of the cases. The extension into multiple antennas allows us to gain insights into the reduction in detection delay that multiple antennas can provide. Although sensing in a Rayleigh channel is more challenging, good sensing performance is still demonstrated. © 1997-2012 IEEE.

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