Outage Probability Analysis of Network Coding Opportunistic Cooperation Relay

With opportunistic relay scheme,an outage probability expression of bi-directional multi-relay system with decode-and-forward based on network coding is given in this paper,and the theory analysis is proved correct by Monte Carlo simulation.Then the system average outage performance at different situations of different power allocation coefficient,SNR and the number of relay is analyzed,and the inherent relationship between power allocation coefficient and total system power as well as the number of relay is pointed out.Simulation results indicate that the optimal system outage performance of bi-directional multi-relay system could be achieved with network coding and opportunistic relay when power allocation coefficient is chosen at 0.6 or about 0.6.