Optical scattering communication under various aerosol types based on a new non-line-of-sight propagation model

Abstract

This paper proposes a model for non-line-of-sight (NLOS) single-scatter propagation in an inhomogeneous atmosphere. This propagation model is used to simulate optical scattering communication under various atmospheric aerosol types. In the traditional NLOS propagation model, the atmosphere is assumed to be homogeneous. The scattering, absorption, and extinction coefficients are fixed values, and the received energy decreases monotonically as the elevation angle of the beam is raised. In the proposed NLOS propagation model, the atmosphere is inhomogeneous. The scattering, absorption, and extinction coefficients decrease as the height increases, and their rates of change are different under various aerosol types. Moreover, the received energy in the simulation does not monotonically decrease, and there is an optimal elevation angle at which the received energy is the highest. We can choose an optimal elevation angle in light communication. The received energy is also distinctive among various aerosol types.