Performance Evaluation of Passive and Active Intelligent Reflecting Surfaces Assisted OMA and NOMA Systems

Intelligent Reflecting Surfaces (IRS) technology lets us to control the wireless channel that provides end to end to communication between the transmitter and receiver devices. Thanks to this feature that IRS is among the prominent technologies for 6G communication systems. It is important to reveal the effects of the IRS, which can be in the passive or active form according to the functionality, over different communication scenarios and different system models. Thus, in this study, both passive and active IRS types are combined with orthogonal multiple access (OMA) and non-orthogonal multiple access (NOMA) communication system models. The performance effect of both passive and active IRS types over the OMA and NOMA systems are examined in detail by obtaining Monte Carlo simulations under different parameters such as transmission power, the position of IRS, and the number of IRS elements.