RANC: Relay-Aided Network-Coded D2D Network

This paper studies an approach towards employing network coding in device-to-device (D2D) network. In a D2D network, the devices in proximity establish direct links for communication instead of utilizing the cellular links. In this paper, relay-aided network-coded (RANC) D2D network is compared with a simple relay-aided D2D network. A D2D network with three source-destination pairs aided by a relay is considered for analysis. The transmissions are directed according to the priorities assigned to D2D pairs on the basis of channel characteristics, i.e., the links suffering from channel degradation are assigned higher priority. Two scenarios are studied; a D2D network with path loss and a D2D network without path loss. End-to-end success probability is quantified for RANC and simple relay-aided D2D network with respect to a signal-to-noise ratio (SNR) margin.