Ultraviolet Scattering Communication Using Subcarrier Intensity Modulation over Atmospheric Turbulence Channels

TL;DR

This paper develops a mathematical model for ultraviolet scattering communication in NLOS conditions, deriving error rate formulas and analyzing the impact of atmospheric turbulence on system performance.

Contribution

It introduces a closed-form turbulence fluctuation model for USC and derives new error rate expressions considering atmospheric turbulence effects.

Findings

Error rate formulas match numerical simulations accurately.

Turbulence impact is strongest at long ranges for same-distance two-LOS links.

Error rates vary with transceiver configurations and turbulence parameters.

Abstract

A closed-form non-line-of-sight (NLOS) turbulenceinduced fluctuation model is derived for ultraviolet scattering communication (USC), which models the received irradiance fluctuation by Meijer G function. Based on this model, we investigate the error rates of the USC system in NLOS case using different modulation techniques. Closed-form error rate results are derived by integration of Meijer G function. Inspired by the decomposition of different turbulence parameters, we use a series expansion of hypergeometric function and obtain the error rate expressions by the sum of four infinite series. The numerical results show that our error rate results are accurate in NLOS case. We also study the relationship between the turbulence influence and NLOS transceiver configurations. The numerical results show that when two-LOS link formulates the same distance, the turbulence influence is the strongest for long ranges and the weakest for short ranges.