Opportunistic relaying is a simple yet efficient cooperation scheme thatachieves full diversity and preserves the spectral efficiency among thespatially distributed stations. However, the stations' mobility causes temporalcorrelation of the system's capacity outage events, which gives rise to itsimportant second-order outage statistical parameters, such as the averageoutage rate (AOR) and the average outage duration (AOD). This letter presentsexact analytical expressions for the AOR and the AOD of an opportunisticrelaying system, which employs a mobile source and a mobile destination(without a direct path), and an arbitrary number of (fixed-gainamplify-and-forward or decode-and-forward) mobile relays in Rayleigh fadingenvironment.
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