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AuthorFoukalas, Fotis
AuthorKhattab, Tamer
Available date2022-11-01T09:01:31Z
Publication Date2014
Publication NameIEEE Vehicular Technology Conference
ResourceScopus
Resource2-s2.0-84936852382
URIhttp://dx.doi.org/10.1109/VTCSpring.2014.7022996
URIhttp://hdl.handle.net/10576/35681
AbstractIn this paper, we investigate the performance of multi-user diversity (MUD) with optimal power allocation (OPA) in spectrum sharing (SS) under average interference power (AIP) constraint. In particular, OPA through average transmit power constraint in conjunction with the AIP constraint is assumed to maximize the ergodic secondary capacity. The solution of this problem requires the calculation of two Lagrange multipliers instead of one as obtained for the peak interference power (PIP) constraint and calculated using the well known water-filling algorithm. To this end, an algorithm based on bisection method is devised in order to calculate both Lagrange multipliers iteratively. Moreover, Rayleigh and Nakagami-m fading channels with one and multiple primary users are considered to derive the required end-to-end SNR analysis. Numerical results are depicted to corroborate our performance analysis and compare it with the PIP case highlighting hence, the impact of the AIP constraint compared to the PIP constraint application. 2014 IEEE.
Languageen
PublisherInstitute of Electrical and Electronics Engineers Inc.
SubjectBisection method
Cognitive radio
Fading channels
Multi-user diversity
Optimal power allocation
Spectrum sharing
TitleMulti-user diversity with optimal power allocation in spectrum sharing under average interference power constraint
TypeConference Paper
Issue NumberJanuary
Volume Number2015-January
dc.accessType Abstract Only


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