Digital communications: fundamentals and applications
Digital communications: fundamentals and applications
Elements of information theory
Elements of information theory
Wireless Communications
Multi-user diversity in a spectrum sharing system
IEEE Transactions on Wireless Communications
On ergodic sum capacity of fading cognitive multiple-access and broadcast channels
IEEE Transactions on Information Theory
Investigation on multiuser diversity in spectrum sharing based cognitive radio networks
IEEE Communications Letters
Optimal power allocation for cognitive radio under primary users outage loss constraint
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Performance analysis of uplink cognitive cellular networks with opportunistic scheduling
IEEE Communications Letters
A new simple model for land mobile satellite channels: first- and second-order statistics
IEEE Transactions on Wireless Communications
Fundamental limits of spectrum-sharing in fading environments
IEEE Transactions on Wireless Communications
Capacity limits of spectrum-sharing systems over hyper-fading channels
Wireless Communications & Mobile Computing
Impact of Quality of Service Constraints on the Performance of Spectrum Sharing Cognitive Users
Wireless Personal Communications: An International Journal
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This article investigates the performance of a cognitive user in a dynamic fading environment. The cognitive user communicates, using a spectrum-sharing technology, over a channel reserved to a primary user (PU). The transmit power of the cognitive user satisfies the outage probability constraint of the PU. The channels of the primary and cognitive users experience independent and non-identically distributed fading models. Nakagami-$$m$$m and hyper-Nakagami-$$m$$m channel fading models are specifically considered. The cognitive user's mean transmit power, channel capacity, and bit error rate are derived for this setup. In addition, numerical results are presented to verify the theoretical analysis and investigate the effects of the parameters of the communication environment on the performance measures of the cognitive user.