Evaluating the Energy Efficiency of NOMA 5G with Regard to the Capacity and Coverage

The current wireless communication networks (3G and 4G) use a technology called orthogonal multiple access (OMA) to transfer information. However, for the future internet of things (IoT) with a massive number of connected devices, nonorthogonal multiple access (NOMA) is a better option to handle more users. But when connecting many devices, energy consumption becomes a concern. To investigate this, this project is carried out to simulate NOMA with successive interference cancellation (SIC) using MATLAB to find a more energy-efficient solution. The simulation uses a wireless channel model, and the study observes the trade-off between coverage distance, capacity, and energy consumption. The simulation results show that the optimum coverage distances for far and near users are 750m and 250m, respectively, with a reasonable power requirement of 100W and an outage probability of 0.00001 $(10^{-5})$.