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Outage and Diversity of Cognitive Relaying Systems under Spectrum Sharing Environments in Nakagami-m Fading
Blekinge Institute of Technology, School of Computing.
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2012 (English)In: IEEE Communications Letters, ISSN 1089-7798, E-ISSN 1558-2558, Vol. 12, no 11Article in journal (Refereed) Published
Abstract [en]

In this letter, the outage performance of dualhop cooperative spectrum sharing systems with a direct link is investigated. A selection combining receiver is employed at the destination in order to combine the signals received from the decode-and-forward (DF) relay and from the source. Assuming independent non-identically distributed Nakagami-m fading channels, exact and asymptotic closed-form expressions are derived for the outage probability. Our results reveal that the diversity order of the considered system is solely determined by the fading severity parameters of the secondary network, being equal to min(m1, m2) + m0, where m0, m1, and m2 represent the fading severity parameters of the secondary nodes i.e., source→destination, source→relay, and relay→destination links, respectivel

Place, publisher, year, edition, pages
IEEE , 2012. Vol. 12, no 11
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:bth-6883DOI: 10.1109/LCOMM.2012.100812.121859ISI: 000312564200042Local ID: oai:bth.se:forskinfo386E1AA77CE2C4F7C1257ACF003E0247OAI: oai:DiVA.org:bth-6883DiVA: diva2:834437
Available from: 2013-09-16 Created: 2012-12-09 Last updated: 2017-03-16Bibliographically approved

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