Outage probability of selective decode and forward relaying with secrecy   constraints
  We study the outage probability of opportunistic relay selection in decode-and-forward relaying with secrecy constraints. We derive the closed-form expression for the outage probability. Based on the analytical result, the asymptotic performance is then investigated. The accuracy of our performance analysis is verified by the simulation results. 
Xiaojun Sun and Chunming Zhao
cs.IT math.IT