Comparative Analysis of Single versus Multi-IRS-Assisted Multi-User for Wireless Communication Systems

Abstract The key enabling technology for sixth-generation (6G) wireless networks is considered to involve intelligent reflecting surfaces (IRSs). The IRSs are made up of fabricated electromagnetic (EM) surfaces with integrated electronics, electronically controlled processes, and specific wireless communication features. IRSs operate without requiring complicated signal processing and encoding and decoding steps that maximize the receiver's signal strength. Improving vital performance parameters such as energy efficiency (EE) and spectral efficiency (SE) has frequently been the primary goal of research in order to meet the increasing requirements for advanced services in future 6G communications. In this research, we conduct a comparative analysis of single and multi-IRS wireless communication networks using energy and spectrum efficiency. The energy efficiency versus user distance and energy efficiency versus signal-to-noise ratio (SNR) are greater than four, two, and a single IRS, respectively. Overall, our results suggest that multi-IRS-assisted wireless communication systems outperform other-IRS systems in terms of wireless communication performance.