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Cognitive Cooperative Networks in Dual-Hop Asymmetric Fading Channels
Blekinge Institute of Technology, School of Computing.
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2013 (English)In: 2013 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM), 2013, 955-961 p.Conference paper, Published paper (Refereed)
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Text
Abstract [en]

Previous works on cognitive relay networks (CRNs) considered only symmetric fading channels. However, in practical wireless propagation scenarios, it is likely that the channels of the secondary user (SU) and primary user (PU) may undergo different fading characteristics. In this paper, we assume that the channels of the secondary network (SU-source -> SU-relay -> SU-destination) are subject to Rician fading, whereas the channels of the link from the SU to the PU experience Rayleigh fading. Based on this framework, the end-to-end outage probability (OP) of CRNs is investigated for two different relaying schemes: i) in the absence of the direct link with decode-and-forward (DF) protocol and ii) in the presence of the direct link with incremental DF protocol. In particular, we derive both exact and asymptotic OP expressions for the considered CRNs. Our analysis reveals important insights into the impact of fading parameters on the CRN performance under distinct fading distributions.

Place, publisher, year, edition, pages
2013. 955-961 p.
Series
IEEE Global Telecommunications Conference (Globecom), ISSN 1930-529X
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:bth-12332ISI: 000357299601006ISBN: 978-1-4799-1353-4 (print)OAI: oai:DiVA.org:bth-12332DiVA: diva2:940750
Conference
IEEE Global Communications Conference (GLOBECOM), DEC 09-13, 2013, Atlanta, GA
Available from: 2016-06-21 Created: 2016-06-21 Last updated: 2017-03-13Bibliographically approved

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