Joint switched transmit diversity and adaptive modulation in spectrum sharing systems

Handle URI:
http://hdl.handle.net/10754/564345
Title:
Joint switched transmit diversity and adaptive modulation in spectrum sharing systems
Authors:
Qaraqe, Khalid A.; Bouida, Zied; Abdallah, Mohamed M.; 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 switched transmit diversity and adaptive modulation in order to minimize the average number of switched branches at the secondary transmitter while increasing the capacity of the secondary link. The proposed switching efficient scheme (SES) uses the scan and wait (SWC) combining technique where a transmission occurs only when a branch with an acceptable performance is found, otherwise data is buffered. In our scheme, the modulation constellation size and the used transmit branch are determined to achieve the highest spectral efficiency with a minimum processing power, given the fading channel conditions, the required error rate performance, and a peak interference constraint to the primary receiver. Selected numerical examples show that the SES scheme minimizes the average number of switched branches for the average and the high secondary signal-to-noise ratio range. This improvement comes at the expense of a small delay introduced by the SWC technique. For reference, we also compare the performance of the SES scheme to the selection diversity scheme (SDS) where the best branch verifying the modulation mode and the interference constraint is always selected. © 2011 ICST.
KAUST Department:
Electrical Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Communication Theory Lab
Publisher:
Institute for Computer Sciences, Social Informatics and Telecommunications Engineering (ICST)
Journal:
Proceedings of the 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications
Conference/Event name:
2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2011
Issue Date:
2011
DOI:
10.4108/icst.crowncom.2011.246248
Type:
Conference Paper
ISBN:
9781936968190
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, Khalid A.en
dc.contributor.authorBouida, Zieden
dc.contributor.authorAbdallah, Mohamed M.en
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2015-08-04T06:24:22Zen
dc.date.available2015-08-04T06:24:22Zen
dc.date.issued2011en
dc.identifier.isbn9781936968190en
dc.identifier.doi10.4108/icst.crowncom.2011.246248en
dc.identifier.urihttp://hdl.handle.net/10754/564345en
dc.description.abstractUnder the scenario of an underlay cognitive radio network, we propose in this paper an adaptive scheme using switched transmit diversity and adaptive modulation in order to minimize the average number of switched branches at the secondary transmitter while increasing the capacity of the secondary link. The proposed switching efficient scheme (SES) uses the scan and wait (SWC) combining technique where a transmission occurs only when a branch with an acceptable performance is found, otherwise data is buffered. In our scheme, the modulation constellation size and the used transmit branch are determined to achieve the highest spectral efficiency with a minimum processing power, given the fading channel conditions, the required error rate performance, and a peak interference constraint to the primary receiver. Selected numerical examples show that the SES scheme minimizes the average number of switched branches for the average and the high secondary signal-to-noise ratio range. This improvement comes at the expense of a small delay introduced by the SWC technique. For reference, we also compare the performance of the SES scheme to the selection diversity scheme (SDS) where the best branch verifying the modulation mode and the interference constraint is always selected. © 2011 ICST.en
dc.publisherInstitute for Computer Sciences, Social Informatics and Telecommunications Engineering (ICST)en
dc.subjectAdaptive Modulationen
dc.subjectPerformance Analysisen
dc.subjectSpectrum Sharingen
dc.subjectSwitched Diversityen
dc.titleJoint switched transmit diversity and adaptive modulation in 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.journalProceedings of the 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communicationsen
dc.conference.date1 June 2011 through 3 June 2011en
dc.conference.name2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2011en
dc.conference.locationOsakaen
dc.contributor.institutionDepartment of Electrical and Computer Engineering, Texas A and M University at Qatar, Doha, Qataren
kaust.authorAlouini, Mohamed-Slimen
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