SWIPT-Aided NOMA for Next-Generation Consumer IoT Networks in Compound Fading Channels

The surge in consumer Internet of Things (IoT) devices can potentially introduce significant challenges for future wireless communication systems, particularly around increased energy consumption and spectrum scarcity. The advent of 6G wireless communication is expected to accelerate the evolution of consumer IoT networks, ensuring the sustainable and efficient deployment of such networks. In this regard, nonorthogonal multiple access (NOMA) is a promising 6G technology that can improve the experience of consumer IoT network users in terms of spectral efficiency, medium access fairness, and delay. Motivated by this, this article studies the performance of a simultaneous wireless information and power transfer (SWIPT)-aided cooperative relaying NOMA (CR-NOMA) system over compound fading channels, namely, the a -Lomax fading model, in terms of ergodic sum rate (ESR). The results indicate that the performance of the optimized SWIPT-aided CR-NOMA system is more superior than that of the SWIPT-aided CR-orthogonal multiple access system. Increasing the values of a and/or m of the a -Lomax model can enhance the ESR performance.