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
Performance analysis of uplink cognitive cellular networks with opportunistic scheduling
IEEE Communications Letters
Scheduling in a Spectrum-Sharing Cognitive Environment Under Outage Probability Constraint
Wireless Personal Communications: An International Journal
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This article investigates the scheduling of secondary users in a spectrum-sharing cognitive environment under the primary user's outage probability constraint. A switched-diversity combining approach to schedule the secondary users is explored. Specifically, switch-and-examine, switch-and-stay, selection-combining, and post-selection scheduling algorithms are investigated. Secondary users' average performance measures are derived for the scheduling algorithms and compared against those of a single-user cognitive system. Results of this work illustrate the trade-off between the complexity of a scheduling algorithm and its average performance.