Outage performance improvement using relay in device-to-device underlying cellular networks

Due to the severe interference from the cellular users who share the same spectrum resources in cellular networks, the reliability of D2D communication has been a great concern. Relay has always been considered a importantl tool in improving the quality of wireless system. This paper combines D2D communication system with relay to make D2D communication more reliable. We can conclude from the simulation results that relay does help efficiently to reduce the outage probability of D2D communication by making the D2D received signal-to-interference-and-noise-ratio (SINR) more stable, under the condition that the target SINR of D2D communication is in low regime.