Monte-Carlo based modeling for ultraviolet non-line-of-sight communication channels with typical obstacles

Solar-blind ultraviolet (UV) scattering communication is capable of providing non-line-of-sight (NLOS) connectivity for separated transceivers. In NLOS scattering channels, the performances of communications are influenced by different shapes of obstacles. In this paper, we propose several Monte-Carlo based scattering channel models related to different geometries to study the effects of obstacles on UV scattering communications. Simulation results reveal the relationships among the channel path loss, the geometry of obstacles, the transmission distance and the transceivers pointing directions. Different from the previous studies which conclude that shorter communication distance and smaller elevation angles produce a lower path loss, we find that the optimum choices of distance and elevation angles depend on the shapes and the positions of the obstacles in the scattering channels.