Joint multiuser switched diversity and adaptive modulation schemes for spectrum sharing systems

Handle URI:
http://hdl.handle.net/10754/564640
Title:
Joint multiuser switched diversity and adaptive modulation schemes for spectrum sharing systems
Authors:
Qaraqe, Marwa; Abdallah, Mohamed M.; Serpedin, Erchin; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 ) ; Alnuweiri, Hussein M.
Abstract:
In this paper, we develop 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, we devise two schemes for selecting a user among those that satisfy the interference constraint and achieve an acceptable signal-to-noise ratio level. The first scheme selects the user that reports the best channel quality. In order to alleviate the high feedback load associated with the first scheme, we develop a second scheme based on the concept of switched diversity where the base station scans the users in a sequential manner until an acceptable user is found. In addition to these two selection schemes, we consider two power adaptive settings at the secondary users based on the amount of interference available at the secondary transmitter. In the On/Off power setting, users are allowed to transmit based on whether the interference constraint is met or not, while in the full power adaptive setting, the users are allowed to vary their transmission power to satisfy the interference constraint. Finally, we present numerical results for our proposed algorithms where we show the trade-off between the average spectral efficiency and average feedback load for both schemes. © 2012 IEEE.
KAUST Department:
Electrical Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Communication Theory Lab
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
2012 IEEE Global Communications Conference (GLOBECOM)
Conference/Event name:
2012 IEEE Global Communications Conference, GLOBECOM 2012
Issue Date:
Dec-2012
DOI:
10.1109/GLOCOM.2012.6503278
Type:
Conference Paper
ISBN:
9781467309219
Appears in Collections:
Conference Papers; Electrical Engineering Program; Communication Theory Lab; 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.contributor.authorAlnuweiri, Hussein M.en
dc.date.accessioned2015-08-04T07:10:34Zen
dc.date.available2015-08-04T07:10:34Zen
dc.date.issued2012-12en
dc.identifier.isbn9781467309219en
dc.identifier.doi10.1109/GLOCOM.2012.6503278en
dc.identifier.urihttp://hdl.handle.net/10754/564640en
dc.description.abstractIn this paper, we develop 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, we devise two schemes for selecting a user among those that satisfy the interference constraint and achieve an acceptable signal-to-noise ratio level. The first scheme selects the user that reports the best channel quality. In order to alleviate the high feedback load associated with the first scheme, we develop a second scheme based on the concept of switched diversity where the base station scans the users in a sequential manner until an acceptable user is found. In addition to these two selection schemes, we consider two power adaptive settings at the secondary users based on the amount of interference available at the secondary transmitter. In the On/Off power setting, users are allowed to transmit based on whether the interference constraint is met or not, while in the full power adaptive setting, the users are allowed to vary their transmission power to satisfy the interference constraint. Finally, we present numerical results for our proposed algorithms where we show the trade-off between the average spectral efficiency and average feedback load for both schemes. © 2012 IEEE.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectcognitive radioen
dc.subjectSpectrum sharingen
dc.subjectswitched multiuser diversityen
dc.titleJoint multiuser switched diversity and adaptive modulation schemes for spectrum sharing systemsen
dc.typeConference Paperen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journal2012 IEEE Global Communications Conference (GLOBECOM)en
dc.conference.date3 December 2012 through 7 December 2012en
dc.conference.name2012 IEEE Global Communications Conference, GLOBECOM 2012en
dc.conference.locationAnaheim, CAen
dc.contributor.institutionDepartment of Electrical and Computer Engineering, Texas A and M University, College Station, TX 77843-3128, United Statesen
dc.contributor.institutionDepartment of Electrical and Computer Engineering, Texas A and M University at Qatar, Education City, 23874, Doha, Qataren
kaust.authorAlouini, Mohamed-Slimen
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