Outage Analysis of Mobile users in Terahertz bands in the Presence of Relays

Utilizing the terahertz (THz) band in wireless communication systems has been usually motivated by the unlimited data rates afforded. However, the small coverage area is a main limitation of adopting THz band in several applications and scenarios. Relaying concept has been widely brought up in the literature to extend the coverage area of different wireless systems. It implies placing a relay (or multiple relays) at the cell edge, which will act as an intermediate point to assist in delivering data to/from the central base station. In this paper, the relaying in THz-based transmission system is considered. Specifically, the outage probability is analyzed at a set of mobile users being served by a central base station (BS) and by the aid of distributed relays. The impact of all the involved system parameters, including the users’ mobility range, the outage threshold, the number of relays and the relay-BS distance, are thoroughly analyzed and discussed. Derived mathematical formulas of the outage probability are presented.