Media-based modulation assisted non-orthogonal multiple access

Abstract

In this paper, we aim to obtain better performance at high spectral efficiencies for downlink communication systems by combining media-based modulation (MBM) with nonorthogonal multiple access (NOMA). An union bound for the average bit error probability of the proposed system is derived in closed-form. The performance of the system has been investigated by using power allocation methods, which are constant and vary according to signal-to-noise ratio (SNR) values. It is shown that the proposed system provides better error performance compared to conventional NOMA systems, especially in high spectral efficiency. The accuracy of the theoretical analysis is verified by computer simulations.