I. Introduction
Intelligent reflection surfaces (IRSs) possess the ability to simplify the wireless communication environment and enhance the signal quality at the receiver. The deployment of the IRS is driven by meta-surfaces development [1], [2]. An IRS comprises an array of unit cells, each of which has an impact on the impinging electromagnetic wave. The variation may refer to the phase [3], [4], losses, frequency or polarization [5]. Predominantly the most recurrent variation is in the phase of the incident signal, maintaining the low losses produced by the interaction with the surface. By controlling the phase of the electromagnetic wave a directive beam can be created. The direction of the electromagnetic response of an IRS can be predefined or real-time.