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dc.contributor.authorSboui, Lokman*
dc.contributor.authorGhazzai, Hakim*
dc.contributor.authorRezki, Zouheir*
dc.contributor.authorAlouini, Mohamed-Slim*
dc.date.accessioned2016-10-12T09:15:27Z
dc.date.available2016-10-12T09:15:27Z
dc.date.issued2016-08-11en
dc.identifier.citationSboui L, Ghazzai H, Rezki Z, Alouini M-S (2016) Precoder Design and Power Allocation for MIMO Cognitive Radio Two-Way Relaying Systems. IEEE Transactions on Communications: 1–1. Available: http://dx.doi.org/10.1109/TCOMM.2016.2599520.en
dc.identifier.issn0090-6778en
dc.identifier.doi10.1109/TCOMM.2016.2599520en
dc.identifier.urihttp://hdl.handle.net/10754/620946
dc.description.abstractIn this paper, we study a multiple-antenna two-way relaying (TWR) cognitive radio (CR) system. A space alignment (SA) technique is adopted by the secondary users (SUs) to avoid interference with the primary users (PUs). We derive the optimal power allocation that maximizes the TWR achievable SU sum- rate while respecting the total power budget and the relay power constraints. We also analyze the case in which the relay is able to optimize its gain matrix structure to enhance the SU sum-rate. In the numerical results, we quantify the sum-rate gain of using the SA in the TWR CR and we show that the SU sum-rate is very limited when the relay power is low or the PU power and its resulting interference are high. In addition, we optimize the relay gain using an iterative algorithm and compare between different relay matrix structures.en
dc.description.sponsorshipThis work was supported by the Qatar National Research Fund (a member of Qatar Foundation) under NPRP Grant NPRP 6-001-2-001en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.urlhttp://ieeexplore.ieee.org/document/7542139/en
dc.rights(c) 2016 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.en
dc.titlePrecoder Design and Power Allocation for MIMO Cognitive Radio Two-Way Relaying Systemsen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division*
dc.contributor.departmentElectrical Engineering Program*
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division*
dc.contributor.departmentComputer, Electrical and Mathematical Science and Engineering Division (CEMSE)*
dc.identifier.journalIEEE Transactions on Communicationsen
dc.eprint.versionPost-printen
dc.contributor.institutionQatar Mobility Innovations Center (QMIC), Qatar University , Doha, Qatar*
kaust.authorSboui, Lokman*
kaust.authorRezki, Zouheir*
kaust.authorAlouini, Mohamed-Slim*
refterms.dateFOA2018-06-13T13:03:15Z


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