Adaptive selection relaying protocols with opportunistic relaying in multiple-relay cooperative networks

Cooperative communications is a promising technique to improve high data-rate coverage in the future communications systems, the strategies about selection relays have a huge effect on the performance of system. In this letter, we study two strategies about adaptive selection relaying protocols with opportunistic relaying. Moreover, the asymptotic outage probability was derived. Results show that the outage probability of two strategies outperforms the traditional opportunistic relaying.