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dc.contributor.authorBala, Indu-
dc.contributor.authorBhamrah, Manjit Singh-
dc.contributor.authorSingh, Ghanshyam-
dc.description.abstractIn this paper, the channel capacity of secondary user is investigated for opportunistic spectrum sharing with primary user in a Rayleigh fading environment. In the proposed communication scenario, on finding transmission opportunities in licensed band, secondary user utilizes the band as long as the interference power inflicted on primary receiver is below the predefined threshold, and adjusts its transmission power and data rate based on the sensing information available from spectrum sensor. In this context, two different adaptation schemes namely adaptive transmission power scheme and adaptive rate and transmission power scheme are investigated under joint peak and average received power constraints at primary receiver for multilevel quadrature amplitude modulation format. The closed form expressions are derived for the ergodic channel capacities of these schemes and numerical results are presented to validate the theoretical results. Moreover, a comparison between channel capacities is given to illustrate the benefit of using soft sensing information under said constraints.en_US
dc.publisherJaypee University of Information Technology, Solan, H.P.en_US
dc.subjectCognitive radioen_US
dc.subjectSpectrum sensingen_US
dc.subjectRayleigh fading channelen_US
dc.subjectPeak and received power constrainten_US
dc.titleRate and Power Optimization Under Received-Power Constraints for Opportunistic Spectrum-Sharing Communicationen_US
Appears in Collections:Journal Articles

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