Multipath Reflections Analysis on Indoor Visible Light Positioning System

TL;DR

This paper investigates how multipath reflections affect the accuracy of indoor visible light positioning systems, using a combined deterministic and Monte Carlo approach to estimate channel responses and analyze positioning errors.

Contribution

It introduces a combined deterministic and Monte Carlo method to model multipath effects on VLC positioning accuracy in indoor environments.

Findings

Multipath reflections significantly impact positioning accuracy.

The proposed model accurately estimates channel impulse response.

Root mean square error analysis reveals key factors affecting accuracy.

Abstract

Visible light communication (VLC) has become a promising research topic in recent years, and finds its wide applications in indoor environments. Particularly, for location based services (LBS), visible light also provides a practical solution for indoor positioning. Multipath-induced dispersion is one of the major concerns for complex indoor environments. It affects not only the communication performance but also the positioning accuracy. In this paper, we investigate the impact of multipath reflections on the positioning accuracy of indoor VLC positioning systems. Combined Deterministic and Modified Monte Carlo (CDMMC) approach is applied to estimate the channel impulse response considering multipath reflections. Since the received signal strength (RSS) information is used for the positioning algorithm, the power distribution from one transmitter in a typical room configuration is first calculated. Then, the positioning accuracy in terms of root mean square error is obtained and analyzed.