Outage rates and outage durations of opportunistic relaying systems

  • Authors:
  • Zoran Hadzi-Velkov;Nikola Zlatanov

  • Affiliations:
  • Faculty of Electrical Engineering and Information Technologies, Ss. Cyril and Methodius University, Skopje, R. Macedonia;Faculty of Electrical Engineering and Information Technologies, Ss. Cyril and Methodius University, Skopje, R. Macedonia

  • Venue:
  • IEEE Communications Letters
  • Year:
  • 2010

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Abstract

Opportunistic relaying is a simple yet efficient cooperation scheme that achieves full diversity and preserves the spectral efficiency among the spatially distributed stations. However, the stations' mobility causes temporal correlation of the system's capacity outage events, which gives rise to its important second-order outage statistical parameters, such as the average outage rate (AOR) and the average outage duration (AOD). This letter presents exact analytical expressions for the AOR and the AOD of an opportunistic relaying system, which employs a mobile source and a mobile destination (without a direct path), and an arbitrary number of (fixed-gain amplify-and-forward or decode-and-forward) mobile relays in Rayleigh fading environment.