Performance analysis of an opportunistic multi-user cognitive network with multiple primary users

Handle URI:
http://hdl.handle.net/10754/566144
Title:
Performance analysis of an opportunistic multi-user cognitive network with multiple primary users
Authors:
Khan, Fahd Ahmed; Tourki, Kamel; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 ) ; Qaraqe, Khalid A.
Abstract:
Consider a multi-user underlay cognitive network where multiple cognitive users concurrently share the spectrum with a primary network with multiple users. The channel between the secondary network is assumed to have independent but not identical Nakagami-m fading. The interference channel between the secondary users (SUs) and the primary users is assumed to have Rayleigh fading. A power allocation based on the instantaneous channel state information is derived when a peak interference power constraint is imposed on the secondary network in addition to the limited peak transmit power of each SU. The uplink scenario is considered where a single SU is selected for transmission. This opportunistic selection depends on the transmission channel power gain and the interference channel power gain as well as the power allocation policy adopted at the users. Exact closed form expressions for the moment-generating function, outage performance, symbol error rate performance, and the ergodic capacity are derived. Numerical results corroborate the derived analytical results. The performance is also studied in the asymptotic regimes, and the generalized diversity gain of this scheduling scheme is derived. It is shown that when the interference channel is deeply faded and the peak transmit power constraint is relaxed, the scheduling scheme achieves full diversity and that increasing the number of primary users does not impact the diversity order. © 2014 John Wiley & Sons, Ltd.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Publisher:
Wiley-Blackwell
Journal:
Wireless Communications and Mobile Computing
Issue Date:
Mar-2014
DOI:
10.1002/wcm.2478
Type:
Article
ISSN:
15308669
Appears in Collections:
Articles; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorKhan, Fahd Ahmeden
dc.contributor.authorTourki, Kamelen
dc.contributor.authorAlouini, Mohamed-Slimen
dc.contributor.authorQaraqe, Khalid A.en
dc.date.accessioned2015-08-12T09:29:58Zen
dc.date.available2015-08-12T09:29:58Zen
dc.date.issued2014-03en
dc.identifier.issn15308669en
dc.identifier.doi10.1002/wcm.2478en
dc.identifier.urihttp://hdl.handle.net/10754/566144en
dc.description.abstractConsider a multi-user underlay cognitive network where multiple cognitive users concurrently share the spectrum with a primary network with multiple users. The channel between the secondary network is assumed to have independent but not identical Nakagami-m fading. The interference channel between the secondary users (SUs) and the primary users is assumed to have Rayleigh fading. A power allocation based on the instantaneous channel state information is derived when a peak interference power constraint is imposed on the secondary network in addition to the limited peak transmit power of each SU. The uplink scenario is considered where a single SU is selected for transmission. This opportunistic selection depends on the transmission channel power gain and the interference channel power gain as well as the power allocation policy adopted at the users. Exact closed form expressions for the moment-generating function, outage performance, symbol error rate performance, and the ergodic capacity are derived. Numerical results corroborate the derived analytical results. The performance is also studied in the asymptotic regimes, and the generalized diversity gain of this scheduling scheme is derived. It is shown that when the interference channel is deeply faded and the peak transmit power constraint is relaxed, the scheduling scheme achieves full diversity and that increasing the number of primary users does not impact the diversity order. © 2014 John Wiley & Sons, Ltd.en
dc.publisherWiley-Blackwellen
dc.subjectCapacityen
dc.subjectCognitive radioen
dc.subjectMulti-user schedulingen
dc.subjectOutageen
dc.subjectPerformance analysisen
dc.titlePerformance analysis of an opportunistic multi-user cognitive network with multiple primary usersen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalWireless Communications and Mobile Computingen
dc.contributor.institutionECEN Program Texas A and M University at Qatar, Doha, Qataren
kaust.authorKhan, Fahd Ahmeden
kaust.authorAlouini, Mohamed-Slimen
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