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dc.contributor.authorBouida, Zied
dc.contributor.authorAbdallah, Mohamed M.
dc.contributor.authorQaraqe, Khalid A.
dc.contributor.authorAlouini, Mohamed-Slim
dc.date.accessioned2015-08-04T06:27:12Z
dc.date.available2015-08-04T06:27:12Z
dc.date.issued2011-09
dc.identifier.citationBouida, Z., Abdallah, M., Qaraqe, K. A., & Alouini, M.-S. (2011). Spectrally Efficient Switched Transmit Diversity for Spectrum Sharing Systems. 2011 IEEE Vehicular Technology Conference (VTC Fall). doi:10.1109/vetecf.2011.6093280
dc.identifier.isbn9781424483273
dc.identifier.issn15502252
dc.identifier.doi10.1109/VETECF.2011.6093280
dc.identifier.urihttp://hdl.handle.net/10754/564424
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 increase the spectral efficiency of the secondary link. The proposed bandwidth efficient scheme (BES) 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 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 BES scheme increases the capacity of the secondary link when compared to an existing switching efficient scheme (SES). This spectral efficiency comes at the expense of an increased average number of switched branches and thus an increased average delay. © 2011 IEEE.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.subjectAdaptive Modulation
dc.subjectand Performance Analysis
dc.subjectSpectrum Sharing
dc.subjectSwitched Diversity
dc.titleSpectrally efficient switched transmit diversity for spectrum sharing systems
dc.typeConference Paper
dc.contributor.departmentCommunication Theory Lab
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journal2011 IEEE Vehicular Technology Conference (VTC Fall)
dc.conference.date5 September 2011 through 8 September 2011
dc.conference.nameIEEE 74th Vehicular Technology Conference, VTC Fall 2011
dc.conference.locationSan Francisco, CA
dc.contributor.institutionDepartment of Electrical and Computer Engineering, Texas A and M University at Qatar, Doha, Qatar
kaust.personAlouini, Mohamed-Slim


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