Capacity of cognitive radio under imperfect secondary and cross link channel state information

Handle URI:
http://hdl.handle.net/10754/564430
Title:
Capacity of cognitive radio under imperfect secondary and cross link channel state information
Authors:
Sboui, Lokman; Rezki, Zouheir; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
In this paper, we study the ergodic capacity of secondary user channel in a spectrum sharing scenario in which the secondary transmitter is instantaneously aware of estimated versions of the cross link (between the secondary transmitter and the primary receiver) and the secondary link Channel State Information (CSI). The secondary link optimal power profile along with the ergodic capacity are derived for a class of fading channels, under an average power constraint and an instantaneous interference outage constraint. We also show that our framework is rather general as it encompasses several previously studied spectrum sharing settings as special cases. In order to gain some insights on the capacity behavior, numerical results are shown for independent Rayleigh fading channels where it is found for instance, that at low SNR regime, only the secondary channel estimation matters and that the cross link CSI has no effect on the ergodic capacity; whereas at high SNR regime, the capacity is rather driven by the cross link CSI. © 2011 IEEE.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program; Communication Theory Lab
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications
Conference/Event name:
2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'11
Issue Date:
Sep-2011
DOI:
10.1109/PIMRC.2011.6140035
Type:
Conference Paper
ISBN:
9781457713484
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division; Electrical Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorSboui, Lokmanen
dc.contributor.authorRezki, Zouheiren
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2015-08-04T06:27:26Zen
dc.date.available2015-08-04T06:27:26Zen
dc.date.issued2011-09en
dc.identifier.isbn9781457713484en
dc.identifier.doi10.1109/PIMRC.2011.6140035en
dc.identifier.urihttp://hdl.handle.net/10754/564430en
dc.description.abstractIn this paper, we study the ergodic capacity of secondary user channel in a spectrum sharing scenario in which the secondary transmitter is instantaneously aware of estimated versions of the cross link (between the secondary transmitter and the primary receiver) and the secondary link Channel State Information (CSI). The secondary link optimal power profile along with the ergodic capacity are derived for a class of fading channels, under an average power constraint and an instantaneous interference outage constraint. We also show that our framework is rather general as it encompasses several previously studied spectrum sharing settings as special cases. In order to gain some insights on the capacity behavior, numerical results are shown for independent Rayleigh fading channels where it is found for instance, that at low SNR regime, only the secondary channel estimation matters and that the cross link CSI has no effect on the ergodic capacity; whereas at high SNR regime, the capacity is rather driven by the cross link CSI. © 2011 IEEE.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectErgodic capacityen
dc.subjectOptimal power allocationen
dc.subjectRayleigh fadingen
dc.subjectSpectrum sharingen
dc.subjectUnderlay Cognitive Radioen
dc.titleCapacity of cognitive radio under imperfect secondary and cross link channel state informationen
dc.typeConference Paperen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journal2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communicationsen
dc.conference.date11 September 2011 through 14 September 2011en
dc.conference.name2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'11en
dc.conference.locationToronto, ONen
dc.contributor.institutionSignals and System Department, Tunisia Polytechnic School (EPT), University of Carthage, La Marsa, Tunis, Tunisiaen
kaust.authorRezki, Zouheiren
kaust.authorAlouini, Mohamed-Slimen
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