BER Analysis Over a Rayleigh Fading Channel: An Investigation using the NOMA Scheme

Abstract

Researches has carried out in the academia and the industry to examine the error performance of the Non-Orthogonal Several Access (NOMA) schemes since NOMA can serve multiple users concurrently while using the same time and frequency resources. Because its access is not orthogonal, interference be tween users is a fundamental disadvantage of the NOMA technology. An inter ference cancellation approach, such as successive interference cancellation (SIC) at the receiver, is typically used to resolve this. Contrarily, inter-user interference in the SIC process cannot be eliminated and is usually due to wrong decisions at the receiver caused by the channel. The performance of the downlink NOMA for the BPSK transmission system in a Rayleigh fading was assessed in this paper using MATLAB. The findings demonstrate that NOMA offers users reasonable fairness while minimizing interference at a reasonable BER.