Single-scatter channel impulse response model of non-line-of-sight ultraviolet communications

TL;DR

This paper introduces a new single-scatter channel impulse response model for non-line-of-sight ultraviolet communications using spherical coordinates, offering faster computation with maintained accuracy compared to Monte-Carlo methods.

Contribution

A novel single-scatter CIR model in spherical coordinates is proposed, improving computational efficiency and practical applicability over previous prolate-spheroidal based models.

Findings

Computational time reduced to less than 0.7% of Monte-Carlo model.

Model maintains comparable accuracy in temporal characteristic assessment.

Validated against Monte-Carlo simulations with consistent results.

Abstract

Previous studies on the temporal characteristics of single-scatter transmission in non-line-of-sight (NLOS) ultraviolet communications (UVC) were based on the prolate-spheroidal coordinate system. In this work, a novel single-scatter channel impulse response (CIR) model is proposed in the spherical coordinate system, which is more natural and comprehensible than the prolate-spheroidal coordinate system in practical applications. Additionally, the results of the widely accepted Monte-Carlo (MC)-based channel model of NLOS UVC are provided to verify the proposed single-scatter CIR model. Results indicate that the computational time costed by the proposed single-scatter CIR model is decreased to less than 0.7% of the MC-based one with comparable accuracy in assessing the temporal characteristics of NLOS UVC channels.