Channel Analyses Over Wide Optical Spectra for Long-Range Scattering Communication

Ultraviolet scattering communication provides none-line-of-sight connectivity for two separated transceivers, but it is limited by low emitting power and high atmospheric absorption in long-range case. This paper adopts a Monte Carlo based multiple-scattering model, and studies associated power losses of optical signals from ultraviolet to visible and infrared bands. Aerosol scattering and absorption coefficients dependent on wavelength are calculated, and wide-spectra Mie phase function is further derived. Data rates at different wavelengths are analytically compared under a specified bit error rate with daytime background light considered. Simulation results reveal that visible and infrared light have low path loss and high data rate advantages in long-range scattering communication.