Adaptive blind receiving for deep VLC coverage in non-uniform LED systems

Recently, visible light communication (VLC) has become a promising technology for reliable communication in the industrial Internet of Things. In VLC, light sources with non-uniform parameters make uncontrollable signal blind zones and aliases. The unknown parameters also lead to the problem of chan...

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Bibliographic Details
Published in:Applied optics (2004) 2022-12, Vol.61 (36), p.10688
Main Authors: Xue, Jing-Shu, Wang, Tao, Wang, Chao, Wang, Xiao-Jing, Zhu, Yi-Jun
Format: Article
Language:English
Subjects:
Industrial applications
Internet of Things
Light sources
Optical communication
Parameter estimation
Probabilistic models
Receiving
Signal reconstruction
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Summary:Recently, visible light communication (VLC) has become a promising technology for reliable communication in the industrial Internet of Things. In VLC, light sources with non-uniform parameters make uncontrollable signal blind zones and aliases. The unknown parameters also lead to the problem of channel estimation. Hence, deep coverage of VLC is challenging. In this paper, we design a dual-sensor elongated receiver. The receiver expands the signal receiving area by increasing the distance between photon detectors and realizes aliased signal recovery without channel estimation. Cooperatively, an adaptive blind receiving scheme is proposed. The scheme separates aliased signals by parameter estimation of a Gaussian mixture model without knowing transmitter parameters. It unifies the aliased and blind receiving cases by an adaptive signal combining method. Finally, the simulation results demonstrate that our scheme achieves better reliability and deeper communication coverage in the given system.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.475663