Interference-Aware Spectrum Sharing Techniques for Next Generation Wireless Networks

Handle URI:
http://hdl.handle.net/10754/594714
Title:
Interference-Aware Spectrum Sharing Techniques for Next Generation Wireless Networks
Authors:
Qaraqe, Marwa Khalid; Bouida, Ziad; Abdallah, Mohamed; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
Background: Reliable high-speed data communication that supports multimedia application for both indoor and outdoor mobile users is a fundamental requirement for next generation wireless networks and requires a dense deployment of physically coexisting network architectures. Due to the limited spectrum availability, a novel interference-aware spectrum-sharing concept is introduced where networks that suffer from congested spectrums (secondary-networks) are allowed to share the spectrum with other networks with available spectrum (primary-networks) under the condition that limited interference occurs to primary networks. Objective: Multiple-antenna and adaptive rate can be utilized as a power-efficient technique for improving the data rate of the secondary link while satisfying the interference constraint of the primary link by allowing the secondary user to adapt its transmitting antenna, power, and rate according to the channel state information. Methods: Two adaptive schemes are proposed using multiple-antenna transmit diversity and adaptive modulation in order to increase the spectral-efficiency of the secondary link while maintaining minimum interference with the primary. Both the switching efficient scheme (SES) and bandwidth efficient scheme (BES) use the scan-and-wait combining antenna technique (SWC) where there is a secondary transmission only when a branch with an acceptable performance is found; else the data is buffered. Results: In both these schemes the constellation size and selected transmit branch are determined to minimized the average number of switches and achieve the highest spectral efficiency given a minimum bit-error-rate (BER), fading conditions, and peak interference constraint. For delayed sensitive applications, two schemes using power control are used: SES-PC and BES-PC. In these schemes the secondary transmitter sends data using a nominal power level, which is optimized to minimize the average delay. Several numerical examples show that the BES scheme increases the capacity of the secondary link. Conclusion: The SES and BES schemes reach high spectral efficiency and BER performance at the expense of an increased delay. The SES-PC and BESPC minimize the average delay, satisfy the BER, and maintain a high spectral efficiency. The proposed power optimization and power control processes minimize the delay and the dropping probability especially if we extend the presented work to a multiuser scenario.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Interference-Aware Spectrum Sharing Techniques for Next Generation Wireless Networks 2011 (2011):CSOS3 Qatar Foundation Annual Research Forum Proceedings
Publisher:
Hamad bin Khalifa University Press (HBKU Press)
Journal:
Qatar Foundation Annual Research Forum Proceedings
Conference/Event name:
Qatar Foundation Annual Research Forum Proceedings
Issue Date:
20-Nov-2011
DOI:
10.5339/qfarf.2011.csos3
Type:
Presentation
ISSN:
2220-251X
Additional Links:
http://www.qscience.com/doi/abs/10.5339/qfarf.2011.csos3
Appears in Collections:
Presentations; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorQaraqe, Marwa Khaliden
dc.contributor.authorBouida, Ziaden
dc.contributor.authorAbdallah, Mohameden
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2016-01-24T05:51:02Zen
dc.date.available2016-01-24T05:51:02Zen
dc.date.issued2011-11-20en
dc.identifier.citationInterference-Aware Spectrum Sharing Techniques for Next Generation Wireless Networks 2011 (2011):CSOS3 Qatar Foundation Annual Research Forum Proceedingsen
dc.identifier.issn2220-251Xen
dc.identifier.doi10.5339/qfarf.2011.csos3en
dc.identifier.urihttp://hdl.handle.net/10754/594714en
dc.description.abstractBackground: Reliable high-speed data communication that supports multimedia application for both indoor and outdoor mobile users is a fundamental requirement for next generation wireless networks and requires a dense deployment of physically coexisting network architectures. Due to the limited spectrum availability, a novel interference-aware spectrum-sharing concept is introduced where networks that suffer from congested spectrums (secondary-networks) are allowed to share the spectrum with other networks with available spectrum (primary-networks) under the condition that limited interference occurs to primary networks. Objective: Multiple-antenna and adaptive rate can be utilized as a power-efficient technique for improving the data rate of the secondary link while satisfying the interference constraint of the primary link by allowing the secondary user to adapt its transmitting antenna, power, and rate according to the channel state information. Methods: Two adaptive schemes are proposed using multiple-antenna transmit diversity and adaptive modulation in order to increase the spectral-efficiency of the secondary link while maintaining minimum interference with the primary. Both the switching efficient scheme (SES) and bandwidth efficient scheme (BES) use the scan-and-wait combining antenna technique (SWC) where there is a secondary transmission only when a branch with an acceptable performance is found; else the data is buffered. Results: In both these schemes the constellation size and selected transmit branch are determined to minimized the average number of switches and achieve the highest spectral efficiency given a minimum bit-error-rate (BER), fading conditions, and peak interference constraint. For delayed sensitive applications, two schemes using power control are used: SES-PC and BES-PC. In these schemes the secondary transmitter sends data using a nominal power level, which is optimized to minimize the average delay. Several numerical examples show that the BES scheme increases the capacity of the secondary link. Conclusion: The SES and BES schemes reach high spectral efficiency and BER performance at the expense of an increased delay. The SES-PC and BESPC minimize the average delay, satisfy the BER, and maintain a high spectral efficiency. The proposed power optimization and power control processes minimize the delay and the dropping probability especially if we extend the presented work to a multiuser scenario.en
dc.publisherHamad bin Khalifa University Press (HBKU Press)en
dc.relation.urlhttp://www.qscience.com/doi/abs/10.5339/qfarf.2011.csos3en
dc.rightsArchived with thanks to Qatar Foundation Annual Research Forum Proceedingsen
dc.titleInterference-Aware Spectrum Sharing Techniques for Next Generation Wireless Networksen
dc.typePresentationen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalQatar Foundation Annual Research Forum Proceedingsen
dc.conference.nameQatar Foundation Annual Research Forum Proceedingsen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionTexas A&M University at Qatar, Doha, Qataren
kaust.authorAlouini, Mohamed-Slimen
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