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QoE Probability Coverage Model of Indoor Visible Light Communication Network

As a candidate wireless communication technology in future, visible light communication (VLC) not only provides the green illumination, but also transmits data at high speed without occupying the existing radio frequency (RF) spectrum resources, hence it can offload the data traffic from the crowded RF network. However, achieving satisfying traffic service with probability almost approaching one inside an indoor scenario is not an effortless task in VLC networks. Several factors such as transmitted power, number of user equipments (UEs), and multiple access schemes affect the coverage probability. In this paper, we utilize the user quality of experience (QoE) as the system performance metric, and the QoE probability coverage model is proposed which the LED coverage area projecting on the ground, we attempt to achieve a satisfying QoE with a certain probability on UEs. We investigate how the factors including non-orthogonal multiple access (NOMA) scheme, user pairing scheme, UE density, power allocation methods etc. affect the reliable QoE probability coverage area which contributes to a VLC network deployment, multiple access protocols and handover schemes.