Outage and SER Analyses for Dual-Hop Inter-Satellite THz Communication

Inter-satellite links have crucial significance in offering global connectivity and low latency in satellite megaconstellations. In such architectures, system capacity and datarate can be enhanced by utilizing terahertz (THz) frequencies. Considering the importance of inter-satellite links in megaconstellations and the mounting interest in THz communications, in this study, an inter-satellite THz communication system is examined. In this setup, a low earth orbit (LEO) satellite is deployed to assist transmission between two LEO satellites by using variable-gain amplify-and-forward relaying protocol. The system's performance is analyzed in terms of both outage probability and symbol error rate, and asymptotic outage characteristic is explored. All theoretical findings are verified by Monte-Carlo simulations.