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dc.contributor.authorAnsari, Imran Shafique
dc.contributor.authorAbdallah, Mohamed M.
dc.contributor.authorAlouini, Mohamed-Slim
dc.contributor.authorQaraqe, Khalid A.
dc.date.accessioned2015-08-04T07:27:09Z
dc.date.available2015-08-04T07:27:09Z
dc.date.issued2014-09
dc.identifier.citationAnsari, I. S., Abdallah, M. M., Alouini, M.-S., & Qaraqe, K. A. (2014). Outage performance analysis of underlay cognitive RF and FSO wireless channels. 2014 3rd International Workshop in Optical Wireless Communications (IWOW). doi:10.1109/iwow.2014.6950766
dc.identifier.isbn9781479966769
dc.identifier.doi10.1109/IWOW.2014.6950766
dc.identifier.urihttp://hdl.handle.net/10754/564985
dc.description.abstractIn this work, the outage performance analysis of a dual-hop transmission system composed of asymmetric radio frequency (RF) channel cascaded with a free-space optical (FSO) link is presented. For the RF link, an underlay cognitive network is considered where the secondary users share the spectrum with licensed primary users. Indoor femtocells act as a practical example for such networks. More specifically, it is assumed that the RF link applies power control to maintain the interference at the primary network below a predetermined threshold. While the RF channel is modeled by the Rayleigh fading distribution, the FSO link is modeled by a unified Gamma-Gamma turbulence distribution. The FSO link accounts for pointing errors and both types of detection techniques (i.e. heterodyne detection as well as intensity modulation/direct detection (IM/DD)). With this model, a new exact closed-form expression is derived for the outage probability of the end-To-end signal-To-noise ratio of these systems in terms of the Meijer's G function and the Fox's H functions under fixed amplify-and-forward relay scheme. All new analytical results are verified via computer-based Monte-Carlo simulations and are illustrated by some selected numerical results.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.subjectAsymmetric dual-hop relay system
dc.subjectcognitive radio
dc.subjectfree-space optical (FSO) communications
dc.subjectmixed radio frequency (RF)/FSO systems
dc.subjectoptical wireless communications
dc.subjectRF over FSO
dc.subjectspectrum sharing
dc.subjectunderlay cognitive radio
dc.titleOutage performance analysis of underlay cognitive RF and FSO wireless channels
dc.typeConference Paper
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentCommunication Theory Lab
dc.identifier.journal2014 3rd International Workshop in Optical Wireless Communications (IWOW)
dc.conference.date17 September 2014
dc.conference.name2014 3rd International Workshop in Optical Wireless Communications, IWOW 2014
dc.contributor.institutionDepartment of Electrical and Computer Engineering, Texas AandM University at QatarDoha, Qatar
kaust.personAnsari, Imran Shafique
kaust.personAlouini, Mohamed-Slim


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