Performance analysis of switch-based multiuser scheduling schemes with adaptive modulation in spectrum sharing systems

Handle URI:
http://hdl.handle.net/10754/566145
Title:
Performance analysis of switch-based multiuser scheduling schemes with adaptive modulation in spectrum sharing systems
Authors:
Qaraqe, Marwa; Abdallah, Mohamed M.; Serpedin, Erchin; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
This paper focuses on the development of multiuser access schemes for spectrum sharing systems whereby secondary users are allowed to share the spectrum with primary users under the condition that the interference observed at the primary receiver is below a predetermined threshold. In particular, two scheduling schemes are proposed for selecting a user among those that satisfy the interference constraint and achieve an acceptable signal-to-noise ratio level. The first scheme focuses on optimizing the average spectral efficiency by selecting the user that reports the best channel quality. In order to alleviate the relatively high feedback required by the first scheme, a second scheme based on the concept of switched diversity is proposed, where the base station (BS) scans the secondary users in a sequential manner until a user whose channel quality is above an acceptable predetermined threshold is found. We develop expressions for the statistics of the signal-to-interference and noise ratio as well as the average spectral efficiency, average feedback load, and the delay at the secondary BS. We then present numerical results for the effect of the number of users and the interference constraint on the optimal switching threshold and the system performance and show that our analysis results are in perfect agreement with the numerical results. © 2014 John Wiley & Sons, Ltd.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program
Publisher:
Wiley-Blackwell
Journal:
Wireless Communications and Mobile Computing
Issue Date:
Apr-2014
DOI:
10.1002/wcm.2480
Type:
Article
ISSN:
15308669
Appears in Collections:
Articles; Electrical Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorQaraqe, Marwaen
dc.contributor.authorAbdallah, Mohamed M.en
dc.contributor.authorSerpedin, Erchinen
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2015-08-12T09:29:59Zen
dc.date.available2015-08-12T09:29:59Zen
dc.date.issued2014-04en
dc.identifier.issn15308669en
dc.identifier.doi10.1002/wcm.2480en
dc.identifier.urihttp://hdl.handle.net/10754/566145en
dc.description.abstractThis paper focuses on the development of multiuser access schemes for spectrum sharing systems whereby secondary users are allowed to share the spectrum with primary users under the condition that the interference observed at the primary receiver is below a predetermined threshold. In particular, two scheduling schemes are proposed for selecting a user among those that satisfy the interference constraint and achieve an acceptable signal-to-noise ratio level. The first scheme focuses on optimizing the average spectral efficiency by selecting the user that reports the best channel quality. In order to alleviate the relatively high feedback required by the first scheme, a second scheme based on the concept of switched diversity is proposed, where the base station (BS) scans the secondary users in a sequential manner until a user whose channel quality is above an acceptable predetermined threshold is found. We develop expressions for the statistics of the signal-to-interference and noise ratio as well as the average spectral efficiency, average feedback load, and the delay at the secondary BS. We then present numerical results for the effect of the number of users and the interference constraint on the optimal switching threshold and the system performance and show that our analysis results are in perfect agreement with the numerical results. © 2014 John Wiley & Sons, Ltd.en
dc.publisherWiley-Blackwellen
dc.subjectCognitive radiosen
dc.subjectMultiuser schedulingen
dc.subjectSwitched diversityen
dc.titlePerformance analysis of switch-based multiuser scheduling schemes with adaptive modulation in spectrum sharing systemsen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.identifier.journalWireless Communications and Mobile Computingen
dc.contributor.institutionDepartment of Electrical and Computer Engineering Texas A and M University College Station, TX 77843-3128 U.S.Aen
dc.contributor.institutionDepartment of Electrical and Computer Engineering Texas A and M University at Qatar, Education City, 23874, Doha Qatar and the Department of Electronics and Communications Engineering, Cairo University Giza PO Box 12613 Egypten
kaust.authorAlouini, Mohamed-Slimen
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