Outage Analysis of Holographic Surface Assisted Downlink Terahertz NOMA

In this paper, we analyze the performance of holographic surface assisted wireless systems that employ non-orthogonal multiple access (NOMA) approaches. In this direction, we present a comprehensive system model that captures the particularities of holographic surfaces as well as the impact of multipath fading. Building upon the system model, we quantify the outage performance of the downlink scenario, by providing novel closed-form expressions for its outage probability. Simulation results validate the authenticity of the presented analysis, illustrate the performance gain of the proposed NOMA scheme over conventional orthogonal multiple access schemes and reveal the feasibility and efficiency of the proposed approach.