Performance Analysis of NOMA Assisted Mobile Ad Hoc Networks for Sustainable Future Radio Access

In this paper, we consider the use of non-orthogonal multiple access (NOMA) assisted mobile ad-hoc networking (MANET) for sustainable future radio access. We analyze the performance of the considered NOMA based system over Nakagami-m fading channels for the downlink scenario. In particular, we derive the closed-form expression of bit-error rate (BER) at the end users supported by the ad-hoc networks cooperated through the near NOMA user as well as through the far NOMA user. Further, we also derive the closed-form expression for the ergodic capacity and packet error rate for the considered system. Based on the obtained results, the impact of the power allocation coefficient over the performance of the considered system is analyzed to determine the optimal power allocation coefficient. The analytical results are corroborated with the simulations for various parameters to validate the analysis. It is observed that the NOMA assisted MANET system outperforms the conventional orthogonal multiple access based system in terms of ergodic capacity.