NOMA-based Joint One-Way and Two-Way Relaying Aided Finite Blocklength Communication

This work considers a finite blocklength (FBL) non-orthogonal multiple access (NOMA)-based joint one-way and two-way relaying aided communication scheme wherein two source nodes share a single decode-and-forward (DF) relay to exchange their information as well as transmit it to the respective destination nodes over a finite number of channel uses. Novel closed-form expressions have been obtained for the end-to-end block error rate (BLER) at all the nodes and also the net throughput of the system. Furthermore, an asymptotic end-to-end BLER floor has also been obtained for all the nodes at high transmit signal to noise power ratio (SNR). Simulation results are presented to authenticate the analytical results derived and demonstrate the efficacy of the proposed scheme.