Outage performance of multihop full duplex relaying system over Nakagami-m fading channels

In this paper, we investigate the outage performance of multihop full duplex decode and forward relay system, in which information gets forwarded from a source node to a destination node with the help of multiple relays in cascade. We derive an exact analytical expression for the end-to-end outage probability considering the effects of co-channel interference caused by inter-relay links and the echo interference at the full duplex relays in independent, non-identical Nakagami-m fading channels. We also provide a highly accurate closed form approximation for the outage probability. We make an extensive comparison of multihop full duplex relaying (FDR) and the equivalent half duplex relaying (HDR) system. The analytical results are corroborated by extensive computer simulation results. We also establish that the closed form approximate model for the outage probability is highly accurate.