Analysis of the impact of a new successive interference cancellation decoder on outage probability performance in power Domain Non- Orthogonal Multiple Access Transmission

Abstract In this article, we evaluate the impact of a new successive interference cancellation scheme on the signal outage probability in the context of PD-NOMA (Power Domain Non-Orthogonal Multiple Access) transmissions. The outage probabilities were assessed for 2 users, UE1 (closest to the base station), and UE2 (farthest from the base station), in a Rayleigh fading channel. The conducted simulations enable a comparison of signal outage probabilities for mobiles using a proposed successive interference cancellation (SIC) decoding scheme, where all interferences with other signals are cancelled, and a standard successive interference cancellation scheme, where only interferences from stronger signals are cancelled. Our simulations establish that the proposed SIC decoding model improves the outage probability performance by 25% for the user farthest from the base station. Generally, an improvement is observed for all mobiles in the network except for the strongest user closest to the base station. In fact, the performance of both SIC decoding models remains identical for the specific case of the strongest user.