Achievable Rate of a Cognitive MIMO Multiple Access Channel With Multi-Secondary Users

Handle URI:
http://hdl.handle.net/10754/575727
Title:
Achievable Rate of a Cognitive MIMO Multiple Access Channel With Multi-Secondary Users
Authors:
Sboui, Lokman ( 0000-0003-1134-4055 ) ; Ghazzai, Hakim ( 0000-0002-8636-4264 ) ; Rezki, Zouheir; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
We study the secondary sum-rate of an underlay cognitive multiple access channel consisting of a primary user and multiple secondary users (SUs) communicating with a common destination. We propose a particular linear precoding and SU selection scheme that maximize the cognitive sum-rate. This scheme is based on space alignment strategy allowing SUs to share the spectrum without interfering with each other. We derive the optimal power allocation for each selected SU after applying perfect or imperfect successive interference cancellation. Numerical results show that the proposed scheme provides a significant sum-rate improvement as the number of SUs increases. In addition, it achieves almost the same performance as an exhaustive search selection, mainly in low and high power ranges. © 1997-2012 IEEE.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program; Communication Theory Lab
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Communications Letters
Issue Date:
Mar-2015
DOI:
10.1109/LCOMM.2014.2387843
Type:
Article
ISSN:
10897798
Sponsors:
Manuscript received July 28, 2014; revised December 24, 2014; accepted December 27, 2014. Date of publication January 6, 2015; date of current version March 6, 2015. This work was supported by the Qatar National Research Fund (a member of Qatar Foundation) under NPRP Grant NPRP 5-250-2-087. The statements made herein are solely the responsibility of the authors. The associate editor coordinating the review of this paper and approving it for publication was T. Q. Duong.
Appears in Collections:
Articles; Electrical Engineering Program; Communication Theory Lab; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorSboui, Lokmanen
dc.contributor.authorGhazzai, Hakimen
dc.contributor.authorRezki, Zouheiren
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2015-08-24T08:36:41Zen
dc.date.available2015-08-24T08:36:41Zen
dc.date.issued2015-03en
dc.identifier.issn10897798en
dc.identifier.doi10.1109/LCOMM.2014.2387843en
dc.identifier.urihttp://hdl.handle.net/10754/575727en
dc.description.abstractWe study the secondary sum-rate of an underlay cognitive multiple access channel consisting of a primary user and multiple secondary users (SUs) communicating with a common destination. We propose a particular linear precoding and SU selection scheme that maximize the cognitive sum-rate. This scheme is based on space alignment strategy allowing SUs to share the spectrum without interfering with each other. We derive the optimal power allocation for each selected SU after applying perfect or imperfect successive interference cancellation. Numerical results show that the proposed scheme provides a significant sum-rate improvement as the number of SUs increases. In addition, it achieves almost the same performance as an exhaustive search selection, mainly in low and high power ranges. © 1997-2012 IEEE.en
dc.description.sponsorshipManuscript received July 28, 2014; revised December 24, 2014; accepted December 27, 2014. Date of publication January 6, 2015; date of current version March 6, 2015. This work was supported by the Qatar National Research Fund (a member of Qatar Foundation) under NPRP Grant NPRP 5-250-2-087. The statements made herein are solely the responsibility of the authors. The associate editor coordinating the review of this paper and approving it for publication was T. Q. Duong.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectAchievable rateen
dc.subjectmultiple secondary usersen
dc.subjectspace alignmenten
dc.subjectunderlay cognitive radioen
dc.titleAchievable Rate of a Cognitive MIMO Multiple Access Channel With Multi-Secondary Usersen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journalIEEE Communications Lettersen
kaust.authorSboui, Lokmanen
kaust.authorGhazzai, Hakimen
kaust.authorRezki, Zouheiren
kaust.authorAlouini, Mohamed-Slimen
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