The development of modern communication systems such as 5G, showing enhanced performance despite of no need of additional Base Stations and lower power supply, is made possible by employing among the other devices the so-called Smart Electromagnetic Skin (SES). Thanks to their use, the environment in which the propagation of the signal occurs represents no longer a limitation but a valuable resource and for this reason it is named Smart Electromagnetic Environment (SEE). The reason for relying on this approach is to enhance the performances of these technologies, which requires high data rates wide bandwidth and low latency as main goals.