Overlay Cognitive Radios With Channel-Aware Adaptive Link Selection and Buffer-Aided Relaying

Handle URI:
http://hdl.handle.net/10754/594221
Title:
Overlay Cognitive Radios With Channel-Aware Adaptive Link Selection and Buffer-Aided Relaying
Authors:
Shaqfeh, Mohammad; Zafar, Ammar; Alnuweiri, Hussein; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
The aim of this work is to maximize the long-term average achievable rate region of a primary and a secondary source-destination pairs operating in an overlay setup over block-fading channels. To achieve this objective, we propose an opportunistic strategy to grant channel access to the primary and secondary sources based on the channel conditions in order to exploit the available multiple-link diversity gains in the system. The secondary source has causal knowledge of the primary messages and it acts as a relay of the primary source in return for getting access to the channel. To maximize the gains of relaying, the relay and destination are equipped with buffers to enable the use of channel-aware adaptive link selection. We propose and optimize different link selection policies and characterize their expected achievable rates. Also, we provide several numerical results to demonstrate the evident mutual benefits of buffer-aided cooperation and adaptive link selection to the primary and the secondary source-destination pairs. © 1972-2012 IEEE.
KAUST Department:
Electrical Engineering Program
Citation:
Shaqfeh M, Zafar A, Alnuweiri H, Alouini M-S (2015) Overlay Cognitive Radios With Channel-Aware Adaptive Link Selection and Buffer-Aided Relaying. IEEE Trans Commun 63: 2810–2822. Available: http://dx.doi.org/10.1109/tcomm.2015.2448082.
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Transactions on Communications
Issue Date:
Aug-2015
DOI:
10.1109/tcomm.2015.2448082
Type:
Article
ISSN:
0090-6778
Sponsors:
NPRP[05-401-2-161]; Qatar National Research Fund[5-250-2-087]
Appears in Collections:
Articles; Electrical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorShaqfeh, Mohammaden
dc.contributor.authorZafar, Ammaren
dc.contributor.authorAlnuweiri, Husseinen
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2016-01-19T14:43:40Zen
dc.date.available2016-01-19T14:43:40Zen
dc.date.issued2015-08en
dc.identifier.citationShaqfeh M, Zafar A, Alnuweiri H, Alouini M-S (2015) Overlay Cognitive Radios With Channel-Aware Adaptive Link Selection and Buffer-Aided Relaying. IEEE Trans Commun 63: 2810–2822. Available: http://dx.doi.org/10.1109/tcomm.2015.2448082.en
dc.identifier.issn0090-6778en
dc.identifier.doi10.1109/tcomm.2015.2448082en
dc.identifier.urihttp://hdl.handle.net/10754/594221en
dc.description.abstractThe aim of this work is to maximize the long-term average achievable rate region of a primary and a secondary source-destination pairs operating in an overlay setup over block-fading channels. To achieve this objective, we propose an opportunistic strategy to grant channel access to the primary and secondary sources based on the channel conditions in order to exploit the available multiple-link diversity gains in the system. The secondary source has causal knowledge of the primary messages and it acts as a relay of the primary source in return for getting access to the channel. To maximize the gains of relaying, the relay and destination are equipped with buffers to enable the use of channel-aware adaptive link selection. We propose and optimize different link selection policies and characterize their expected achievable rates. Also, we provide several numerical results to demonstrate the evident mutual benefits of buffer-aided cooperation and adaptive link selection to the primary and the secondary source-destination pairs. © 1972-2012 IEEE.en
dc.description.sponsorshipNPRP[05-401-2-161]en
dc.description.sponsorshipQatar National Research Fund[5-250-2-087]en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectAdaptive link selectionen
dc.subjectBlockfading channelsen
dc.subjectBuffer-aided relayingen
dc.subjectOpportunistic communicationen
dc.subjectOverlay cognitive radiosen
dc.titleOverlay Cognitive Radios With Channel-Aware Adaptive Link Selection and Buffer-Aided Relayingen
dc.typeArticleen
dc.contributor.departmentElectrical Engineering Programen
dc.identifier.journalIEEE Transactions on Communicationsen
dc.contributor.institutionDepartment of Electrical and Computer Engineering, Texas a and M University at Qatar, Doha, Qataren
dc.contributor.institutionFaculty of Engineering and Information Technology, University of Technology Sydney, Sydney, NSW, Australiaen
kaust.authorAlouini, Mohamed-Slimen
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