Ergodic Capacity of Cognitive Radio Under Imperfect Channel-State Information

Handle URI:
http://hdl.handle.net/10754/241992
Title:
Ergodic Capacity of Cognitive Radio Under Imperfect Channel-State Information
Authors:
Rezki, Zouheir; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
A spectrum-sharing communication system where the secondary user is aware of the instantaneous channel-state information (CSI) of the secondary link but knows only the statistics and an estimated version of the secondary transmitter-primary receiver link is investigated. The optimum power profile and the ergodic capacity of the secondary link are derived for general fading channels [with a continuous probability density function (pdf)] under the average and peak transmit power constraints and with respect to the following two different interference constraints: 1) an interference outage constraint and 2) a signal-to-interference outage constraint. When applied to Rayleigh fading channels, our results show, for example, that the interference constraint is harmful at the high-power regime, because the capacity does not increase with the power, whereas at the low-power regime, it has a marginal impact and no-interference performance, which corresponds to the ergodic capacity under average or peak transmit power constraint in the absence of the primary user, may be achieved. © 2012 IEEE.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Communication Theory Lab
Citation:
Rezki Z, Alouini M (2012) Ergodic Capacity of Cognitive Radio Under Imperfect Channel-State Information. IEEE Trans Veh Technol 61: 2108-2119. doi:10.1109/TVT.2012.2195042.
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Transactions on Vehicular Technology
Issue Date:
8-Sep-2012
DOI:
10.1109/TVT.2012.2195042
Type:
Article
ISSN:
0018-9545; 1939-9359
Additional Links:
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6185693
Appears in Collections:
Articles; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorRezki, Zouheiren
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2012-09-08T11:22:28Z-
dc.date.available2012-09-08T11:22:28Z-
dc.date.issued2012-09-08en
dc.identifier.citationRezki Z, Alouini M (2012) Ergodic Capacity of Cognitive Radio Under Imperfect Channel-State Information. IEEE Trans Veh Technol 61: 2108-2119. doi:10.1109/TVT.2012.2195042.en
dc.identifier.issn0018-9545en
dc.identifier.issn1939-9359en
dc.identifier.doi10.1109/TVT.2012.2195042en
dc.identifier.urihttp://hdl.handle.net/10754/241992en
dc.description.abstractA spectrum-sharing communication system where the secondary user is aware of the instantaneous channel-state information (CSI) of the secondary link but knows only the statistics and an estimated version of the secondary transmitter-primary receiver link is investigated. The optimum power profile and the ergodic capacity of the secondary link are derived for general fading channels [with a continuous probability density function (pdf)] under the average and peak transmit power constraints and with respect to the following two different interference constraints: 1) an interference outage constraint and 2) a signal-to-interference outage constraint. When applied to Rayleigh fading channels, our results show, for example, that the interference constraint is harmful at the high-power regime, because the capacity does not increase with the power, whereas at the low-power regime, it has a marginal impact and no-interference performance, which corresponds to the ergodic capacity under average or peak transmit power constraint in the absence of the primary user, may be achieved. © 2012 IEEE.en
dc.language.isoenen
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.urlhttp://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6185693en
dc.rightsArchived with thanks to IEEE Transactions on Vehicular Technologyen
dc.subjectCognitive radioen
dc.subjectspectrum sharingen
dc.subjectoptimal power allocationen
dc.subjectergodic capacityen
dc.subjectinterference outage constrainten
dc.titleErgodic Capacity of Cognitive Radio Under Imperfect Channel-State Informationen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journalIEEE Transactions on Vehicular Technologyen
dc.contributor.institutionKing Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Eastern Province, Saudi Arabiaen
dc.contributor.institutionCarleton University, Ottawa, ON, Canadaen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorRezki, Zouheiren
kaust.authorAlouini, Mohamed-Slimen
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