Database systems under Rayleigh fading channels: MIMO-NOMA based performance evaluation modelling

In recent years, non-orthogonal multiple access (NOMA) has emerged as a transformative technique, revolutionising spectral efficiency and enabling massive connectivity in next-gen wireless communication. This ground breaking research delves into multiple input multiple output non-orthogonal multiple access (MIMO NOMA) systems' power allocation strategies, prioritising system throughput and user fairness. Our innovative approach leverages QPSK modulation in a comprehensive system model, meticulously simulating performance across various variables, including user distance and power differentials. Across varying bandwidths, our model showcases remarkable improvements in user experience, with a jaw-dropping 12 dB/Hz increase in spectral efficiency at a mere 1 dB SNR boost, coupled with a staggering 15 × 10-3 and 12 × 10-3 reduction in outage probabilities at 0.17 dB. Even in the challenging Rayleigh fading channel, the bit error rate (BER) sees substantial reductions, reaffirming the prowess of our proposed methodology.