Non Orthogonal Multiple Access Requirements for 5G and Its Myths

In the modern era, an overwhelming number of individuals use smart gadgets, which need a high data rate to execute. As Internet-enabled applications proliferate, total mobile traffic is expected to increase by 80% between 2021 and 2023. Due to the rapid growth of telecommunications services, network latency and speed have surged. Because of their high data rates, conventional multiplexing approaches like OMA have an adverse influence on the network's performance. This article discusses the requirements for Non-Orthogonal Multiple Access of fifth generation technologies and breaks down some of the misconceptions around it. Then, it details the types of NOMA and addresses approaches regarding system capacity and spectrum efficiency, as well as two-user single cell NOMA. The goal of this study is to address three notions, namely: the comparison between OMA and NOMA. Then, using MATLAB, the two-user Power Domain NOMA model was simulated. Finally, the Additive White Gaussian Noise channel was used to determine the performance of the two-user PD-NOMA model in terms of BER and SNR. In PD-NOMA, superposition coding and successful interference cancellation are explored. Making a correlation halfway between OMA and NOMA is difficult since the achievable rate of NOMA is greater. To examine the performance, the suggested simulation environment model includes an AWGN channel. The signal to noise ratio is varied between 0 and 30 dB. The observations demonstrate that the bit error rate seen by users ranges between 0.22 and 0.4.