Reconfigurable MISO-VLC via Joint Light Source Identification and Localization Using a Receiver With Spatial LCD Filter

This paper presents a novel concept for joint light source identification and localization (JLIL) with subsequent interference suppression using a liquid crystal display (LCD)-based receiver. The JLIL concept is particularly suitable for multiple-input single-output visible-light-communication setti...

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Bibliographic Details
Published in:IEEE photonics journal 2024-12, Vol.16 (6), p.1-17
Main Authors: Harlakin, Andrej, Mietzner, Jan, Hoeher, Peter A.
Format: Article
Language:English
Subjects:
Accuracy
Angle-of-arrival estimation
Estimation
Interference
interference suppression
light emitting diode
Light emitting diodes
Light sources
Lighting
liquid crystal display (LCD)
Liquid crystal displays
optical communication
Optical switches
photodetector
Simulation
Visible light communication
visible light positioning
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Summary:This paper presents a novel concept for joint light source identification and localization (JLIL) with subsequent interference suppression using a liquid crystal display (LCD)-based receiver. The JLIL concept is particularly suitable for multiple-input single-output visible-light-communication settings, where an LCD-based receiver must be able to identify a desired light source before suppressing interfering ones. Given a basic visible-light-communication setup, in a first step modifications required both on the transmitter and the receiver side are identified. Subsequently, the concept for LCD-based JLIL is introduced, and its performance is illustrated by means of simulation results. In this context, intersymbol interference effects are investigated and a known ambiguity problem is overcome. Finally, results of an experimental verification are reported as a proof of concept. It is shown that the derived simulation model accurately predicts measurement results. The latter confirm a virtually error-free light source identification and precise localization within system accuracy range. Furthermore, an improved peak detection is reported. Signal-to-noise ratio measurements suggest good performance for up to 3 \,\mathrm{m} using the developed hardware demonstrator.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2024.3469391