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dc.contributor.authorHussain, Syed Imtiaz
dc.contributor.authorAbdallah, Mohamed M.
dc.contributor.authorAlouini, Mohamed-Slim
dc.contributor.authorHasna, Mazen Omar
dc.contributor.authorQaraqe, Khalid A.
dc.date.accessioned2015-08-04T06:25:50Z
dc.date.available2015-08-04T06:25:50Z
dc.date.issued2011-06
dc.identifier.isbn9781424493326
dc.identifier.doi10.1109/SPAWC.2011.5990375
dc.identifier.urihttp://hdl.handle.net/10754/564388
dc.description.abstractUnderlay cognitive networks should follow strict interference thresholds to operate in parallel with primary networks. This constraint limits their transmission power and eventually the area of coverage. Therefore, it is very likely that the underlay networks will make use of relays to transmit signals to the distant secondary users. In this paper, we propose a secondary relay selection scheme which maximizes the end-to-end signal to noise ratio (SNR) for the secondary link while keeping the interference levels to the primary network below a certain threshold. We derive closed form expressions for the probability density function (PDF) of the SNR at the secondary destination, average bit error probability and outage probability. Analytical results are verified through simulations which also give insight about the benefits and tradeoffs of the selective cooperation in underlay cognitive networks. It is shown that, in contrast to non-cognitive selective cooperation, this scheme performs better in low SNR region for cognitive networks. © 2011 IEEE.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.subjectcognitive radio
dc.subjectoverlay networks
dc.subjectrelay selection etc.
dc.subjectunderlay networks
dc.subjectuser cooperation
dc.titlePerformance analysis of selective cooperation in underlay cognitive networks over Rayleigh channels
dc.typeConference Paper
dc.contributor.departmentCommunication Theory Lab
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journal2011 IEEE 12th International Workshop on Signal Processing Advances in Wireless Communications
dc.conference.date26 June 2011 through 29 June 2011
dc.conference.name2011 IEEE 12th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2011
dc.conference.locationSan Francisco, CA
dc.contributor.institutionTexas A and M University at Qatar, Doha, Qatar
dc.contributor.institutionQatar University, Doha, Qatar
kaust.personAlouini, Mohamed-Slim


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