Decode-and-Forward Relaying Systems with Nth Best-Relay Selection over Rayleigh Fading Channels

  • Duy, Tran Trung (Department of Electronic Engineering, University of Ulsan) ;
  • Kong, Hyung-Yun (Department of Electronic Engineering, University of Ulsan)
  • Received : 2011.11.02
  • Accepted : 2012.01.13
  • Published : 2012.03.31


In this paper, we evaluate performances of dual-hop decode-and-forward relaying systems with the $N^{th}$ best-relay selection scheme. In some schemes, such as scheduling or load balancing schemes, the best relay is unavailable and hence the system must resort the second best, third best, or generally the $N^{th}$ best relay. We derive the expressions of the outage probability and symbol error rate (SER) for this scenario over Rayleigh fading channels. Monte-Carlo simulations are presented to verify the analytical results.


Cooperative Communication;Decode-and-Forward Relaying;Outage Probability;Rayleigh Fading Channel


Supported by : National Research Foundation of Korea (NRF)


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