Partial relay selection in underlay cognitive networks with fixed gain relays

Handle URI:
http://hdl.handle.net/10754/564550
Title:
Partial relay selection in underlay cognitive networks with fixed gain relays
Authors:
Hussain, Syed Imtiaz; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 ) ; Hasna, Mazen Omar; Qaraqe, Khalid A.
Abstract:
In a communication system with multiple cooperative relays, selecting the best relay utilizes the available spectrum more efficiently. However, selective relaying poses a different problem in underlay cognitive networks compared to the traditional cooperative networks due to interference thresholds to the primary users. In most cases, a best relay is the one which provides the maximum end-to-end signal to noise ratio (SNR). This approach needs plenty of instantaneous channel state information (CSI). The CSI burden could be reduced by partial relay selection. In this paper, a partial relay selection scheme is presented and analyzed for an underlay cognitive network with fixed gain relays operating in the vicinity of a primary user. The system model is adopted in a way that each node needs minimal CSI to perform its task. The best relay is chosen on the basis of maximum source to relay link SNR which then forwards the message to the destination. We derive closed form expressions for the received SNR distributions, system outage, probability of bit error and average channel capacity of the system. The derived results are confirmed through simulations. © 2012 IEEE.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program; Communication Theory Lab
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
2012 IEEE 75th Vehicular Technology Conference (VTC Spring)
Conference/Event name:
IEEE 75th Vehicular Technology Conference, VTC Spring 2012
Issue Date:
May-2012
DOI:
10.1109/VETECS.2012.6240207
Type:
Conference Paper
ISSN:
15502252
ISBN:
9781467309905
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.authorHussain, Syed Imtiazen
dc.contributor.authorAlouini, Mohamed-Slimen
dc.contributor.authorHasna, Mazen Omaren
dc.contributor.authorQaraqe, Khalid A.en
dc.date.accessioned2015-08-04T07:03:46Zen
dc.date.available2015-08-04T07:03:46Zen
dc.date.issued2012-05en
dc.identifier.isbn9781467309905en
dc.identifier.issn15502252en
dc.identifier.doi10.1109/VETECS.2012.6240207en
dc.identifier.urihttp://hdl.handle.net/10754/564550en
dc.description.abstractIn a communication system with multiple cooperative relays, selecting the best relay utilizes the available spectrum more efficiently. However, selective relaying poses a different problem in underlay cognitive networks compared to the traditional cooperative networks due to interference thresholds to the primary users. In most cases, a best relay is the one which provides the maximum end-to-end signal to noise ratio (SNR). This approach needs plenty of instantaneous channel state information (CSI). The CSI burden could be reduced by partial relay selection. In this paper, a partial relay selection scheme is presented and analyzed for an underlay cognitive network with fixed gain relays operating in the vicinity of a primary user. The system model is adopted in a way that each node needs minimal CSI to perform its task. The best relay is chosen on the basis of maximum source to relay link SNR which then forwards the message to the destination. We derive closed form expressions for the received SNR distributions, system outage, probability of bit error and average channel capacity of the system. The derived results are confirmed through simulations. © 2012 IEEE.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectcognitive radioen
dc.subjectoverlay networksen
dc.subjectrelay selection etc.en
dc.subjectunderlay networksen
dc.subjectuser cooperationen
dc.titlePartial relay selection in underlay cognitive networks with fixed gain relaysen
dc.typeConference Paperen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journal2012 IEEE 75th Vehicular Technology Conference (VTC Spring)en
dc.conference.date6 May 2012 through 9 June 2012en
dc.conference.nameIEEE 75th Vehicular Technology Conference, VTC Spring 2012en
dc.conference.locationYokohamaen
dc.contributor.institutionTexas A and M University at Qatar, Doha, Qataren
dc.contributor.institutionQatar University, Doha, Qataren
kaust.authorAlouini, Mohamed-Slimen
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