RIS-Assisted Full-Duplex Relay Systems

Reconfigurable intelligent surfaces (RISs) have recently been presented as a revolutionary technique and recognized one of the candidates for beyond fifth-generation wireless networks. The RIS technology becomes especially attractive due to its capability operate in full-duplex (FD) mode, which is able ideally double half-duplex radio spectrum efficiency. This article analyzes performance an RIS-aided multihop FD relaying system, where intermediate relay employed defeat far-field path-loss effect inherent communication links. To this end, we analytically derive exact asymptotic closed-form expressions outage probability, average spectral efficiency, bit error rate. system demonstrates effective improvement proposed network. However, from results, it noticed that increase number units within certain link does not provide linear channel's model. Thus, mixing active techniques with passive platforms can be ideal solution improve further performance, such rate RIS-enabled