Power adaptation for joint switched diversity and adaptive modulation schemes in spectrum sharing systems

Handle URI:
http://hdl.handle.net/10754/562310
Title:
Power adaptation for joint switched diversity and adaptive modulation schemes in spectrum sharing systems
Authors:
Bouida, Zied; Tourki, Kamel; Ghrayeb, Ali A.; Qaraqe, Khalid A.; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
Under the scenario of an underlay cognitive radio network, we propose in this paper an adaptive scheme using transmit power adaptation, switched transmit diversity, and adaptive modulation in order to improve the performance of existing switching efficient schemes (SES) and bandwidth efficient schemes (BES). Taking advantage of the channel reciprocity principle, we assume that the channel state information (CSI) of the interference link is available to the secondary transmitter. This information is then used by the secondary transmitter to adapt its transmit power, modulation constellation size, and used transmit branch. The goal of this joint adaptation is to minimize the average number of switched branches and the average system delay given the fading channel conditions, the required error rate performance, and a peak interference constraint to the primary receiver. We analyze the proposed scheme in terms of the average number of branch switching, average delay, and we provide a closed-form expression of the average bit error rate (BER). We demonstrate through numerical examples that the proposed scheme provides a compromise between the SES and the BES 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:
IEEE Communications Letters
Issue Date:
Sep-2012
DOI:
10.1109/LCOMM.2012.071612.121206
Type:
Article
ISSN:
10897798
Sponsors:
This paper was made possible by Grant NPRP 08-101-2-025 and Grant NPRP 09-126-2-054 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors.
Appears in Collections:
Articles; Electrical Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorBouida, Zieden
dc.contributor.authorTourki, Kamelen
dc.contributor.authorGhrayeb, Ali A.en
dc.contributor.authorQaraqe, Khalid A.en
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2015-08-03T10:00:23Zen
dc.date.available2015-08-03T10:00:23Zen
dc.date.issued2012-09en
dc.identifier.issn10897798en
dc.identifier.doi10.1109/LCOMM.2012.071612.121206en
dc.identifier.urihttp://hdl.handle.net/10754/562310en
dc.description.abstractUnder the scenario of an underlay cognitive radio network, we propose in this paper an adaptive scheme using transmit power adaptation, switched transmit diversity, and adaptive modulation in order to improve the performance of existing switching efficient schemes (SES) and bandwidth efficient schemes (BES). Taking advantage of the channel reciprocity principle, we assume that the channel state information (CSI) of the interference link is available to the secondary transmitter. This information is then used by the secondary transmitter to adapt its transmit power, modulation constellation size, and used transmit branch. The goal of this joint adaptation is to minimize the average number of switched branches and the average system delay given the fading channel conditions, the required error rate performance, and a peak interference constraint to the primary receiver. We analyze the proposed scheme in terms of the average number of branch switching, average delay, and we provide a closed-form expression of the average bit error rate (BER). We demonstrate through numerical examples that the proposed scheme provides a compromise between the SES and the BES schemes. © 2012 IEEE.en
dc.description.sponsorshipThis paper was made possible by Grant NPRP 08-101-2-025 and Grant NPRP 09-126-2-054 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectAdaptive modulationen
dc.subjectand switched diversityen
dc.subjectperformance analysisen
dc.subjectpower adaptationen
dc.subjectspectrum sharingen
dc.titlePower adaptation for joint switched diversity and adaptive modulation schemes in spectrum sharing systemsen
dc.typeArticleen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journalIEEE Communications Lettersen
dc.contributor.institutionECE Dept., Concordia Univ., Montreal, Canadaen
dc.contributor.institutionECE Dept., Texas AandM Univ. at Qatar, Doha, Qataren
kaust.authorAlouini, Mohamed-Slimen
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