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dc.contributor.authorZorgui, Marwen
dc.contributor.authorRezki, Zouheir
dc.contributor.authorAlouini, Mohamed-Slim
dc.date.accessioned2016-01-27T12:52:30Z
dc.date.available2016-01-27T12:52:30Z
dc.date.issued2015-12-03
dc.identifier.citationZorgui, M., Rezki, Z., & Alouini, M.-S. (2015). On achievable rates of interference and cognitive channels with a relay. 2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC). doi:10.1109/pimrc.2015.7343261
dc.identifier.doi10.1109/PIMRC.2015.7343261
dc.identifier.urihttp://hdl.handle.net/10754/594967
dc.description.abstractWe consider a two-user interference channel assisted by a relay. Treating interference as noise at the receivers, and adopting an amplify and forward (AF) strategy at the relay, we derive achievable rates of both users, for given powers. Next, we solve the optimal power allocation problem maximizing the weighted sum rate of both users with and without relay power optimization. In particular, we propose a simple iterative line search algorithm solving the joint optimization problem over the three transmit powers and show that optimizing the relay power enhances the performance of the system. Then, considering the first user as a primary user, we determine the maximum instantaneous rate that the secondary user can achieve subject to an outage constraint with respect to the primary user and a peak power constraint. We show that, likewise the first part, jointly optimizing the secondary user and the relay transmit powers enhances the secondary user performance.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttp://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=7343261
dc.rights(c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
dc.subjectinterference
dc.subjectoutage
dc.subjectpower allocation
dc.subjectrelay
dc.titleOn achievable rates of interference and cognitive channels with a relay
dc.typeConference Paper
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.identifier.journal2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
dc.conference.dateAug. 30 2015-Sept. 2 2015
dc.conference.name2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
dc.conference.locationHong Kong
dc.eprint.versionPost-print
kaust.personZorgui, Marwen
kaust.personRezki, Zouheir
kaust.personAlouini, Mohamed-Slim
refterms.dateFOA2018-06-13T22:20:41Z
dc.date.published-online2015-12-03
dc.date.published-print2015-08


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