Performance Analysis of Wireless Mesh Backhauling Using Intelligent Reflecting Surfaces

This paper considers the deployment of intelligent reflecting surfaces (IRSs) technology for wireless multi-hop backhauling multiple basestations (BSs) connected in a mesh topology. The performance proposed architecture is evaluated terms outage and symbol error probability Rician fading channels, where closed-form expressions are derived demonstrated to be accurate several cases interest. analytical results corroborated by simulation, show that IRS-mesh has desired features can exploited overcome some challenges, particularly severe attenuation at high frequencies. For example, using IRS with four elements, N=4, provides rate about 10 -5 signal-to-noise ratio 0 dB, even large number hops. Moreover, obtained Monte Carlo simulation gain increasing N decreases significantly > 5. from 1 2 8dB gain, while increase 3 4 4dB. degradation caused relaying process becomes negligible when elements N= 3.