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Performance analysis of a multi-user diversity in a SIMO spectrum sharing system

In this paper, a performance analysis is presented for a multi-user selection diversity in a single-input multiple-output (SIMO) spectrum sharing system. In the considered system, multiple secondary users (SUs) try to utilize the licensed spectrum of the primary user (PU) in an opportunistic manner, in which an interference constraint and a quality of service for the primary user are satisfied. The average achievable channel capacity and the outage probability performance of the system are analyzed and mathematical closed-form expressions are derived for the system under study. The performances of the system are evaluated using the derived mathematical formulas in different cases. In addition, Monte-Carlo simulation results are also provided to show the accuracy and correctness of the performed analysis.