Relay‐Assisted Communications Over Multi‐Cluster Fluctuating Two‐Ray Faded Channels

ABSTRACT In this paper, a decode‐and‐forward relay‐assisted device‐to‐device (D2D) network is examined over novel multi‐cluster fluctuating two‐ray (MFTR) fading channels. All communication links are functioning in terahertz (THz) conditions. Co‐channel interference (CCI) is considered as well. We assume an eavesdropper is also present near the receiver and overhears the relay's signal. With the help of characteristic functions, expressions of outage, success probability, capacity with outage, secrecy outage, probability of strictly positive secrecy capacity and intercept probability are presented. These expressions are functions of MFTR fading conditions, THz channel parameters and distances between various nodes in the system. Numerical results based on the derived expressions are discussed under various scenarios.