6. Implementation of a Non-orthogonal Multiple Access Scheme Under Practical Impairments

This paper presents a practical scenario of non-orthogonal multiple access (NOMA) networks. In particular, a two-way NOMA network with hardware impairments is analyzed. To facilitate the system performance analysis, closed-from expressions are derived for the outage probability and throughput. Furthermore, to provide insights of performance, an asymptotic expression is introduced for the case of high SNR and then limitation of the system under hardware impairments is determined. Since successive interference cancelation (SIC) is adopted at each receiver, SIC affects the detection performance. As such, we consider both imperfect SIC (ipSIC) and perfect SIC cases. In addition, and we further compare system performance of NOMA with traditional orthogonal multiple access (OMA). Finally, to verify the analytical results Monte Carlo simulations presented.