Performance Analysis of a Cooperative Network Coding Based on Selective Transmission

Automatic retransmission is one of effective approaches to ensure the error correction and achieve data transmission over Fading Channels.A cooperative network coding based on selective transmission (STCNC) is proposed,which can effectively reduce the average number of retransmissions and improves resource efficiency.Focusing on the system with one source node,single relay nodes and two destination node,outage performance and network coding gain of STCNC are analyzed.The results show that in contrast to traditional broadcast strategy,secondorder diversity is achieved through STCNC.And in the low and middle signaltosignal ratio (SNR) regime,a superior network coding gain is achieved simultaneity.