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Optical Wireless Sensor Networks: Research and Applications
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Optical Wireless Sensor Networks: Research and Applications

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: closed (25 April 2023) | Viewed by 2471

Special Issue Editor

Dr. Stephanie Sahuguede

E-Mail Website
Guest Editor
XLIM Laboratory, UMR CNRS 7252, University of Limoges, 87000 Limoges, France
Interests: error correction codes; optical CDMA; wireless optical communications; communication systems for e-Health
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Wireless sensors are prevalent in various applications in both outdoor and indoor environments for building, factory or house monitoring or health monitoring in wearable systems in medical sports, wellness or military contexts. Conventional wireless communications are based on radiofrequency technologies, which may cause security or interference issues due to the increasing number of communicating devices or be incompatible for places or people sensitive to electromagnetic fields, such as wearers of pacemakers or infants. Optical wireless networks inherently overcome these issues and constitute a challenge in these contexts.

This Special Issue aims to bring together recent research and applications on optical wireless sensor networks, from the hardware layer to the network layer.

Research and application papers focused on the use of optical wireless sensors networks in indoor and outdoor environments are welcome. The main topics of interest include, but are not limited to:

  • Smart and miniaturized optical wireless sensor nodes;
  • Optical wireless body sensor networks;
  • Free-space and underwater wireless sensor networks;
  • Optical wireless channel modeling;
  • Optical wireless transceivers;
  • Quality of service, networks, routing and protocols for optical wireless networks;
  • Energy harvesting in optical wireless sensor networks.

Dr. Stephanie Sahuguede
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • infrared and visible-light communications
  • optical wireless channel
  • optical transceivers
  • indoor optical wireless communication
  • underwater optical communications
  • free-space optical communications
  • wireless sensor networks

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Published Papers (1 paper)

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Research

22 pages, 1451 KiB  
Article
Highly Sensitive SPAD-Based Receiver for Dimming Control in LiFi Networks
by Mohamad Hijazi, Shenjie Huang and Majid Safari
Sensors 2023, 23(10), 4673; https://doi.org/10.3390/s23104673 - 11 May 2023
Cited by 4 | Viewed by 1946
Abstract
Visible light communication (VLC) is an emerging mode of wireless communication that supports both illumination and communication. One essential function of VLC systems is the dimming control, which requires a sensitive receiver for low-light conditions. The use of an array of single-photon avalanche [...] Read more.
Visible light communication (VLC) is an emerging mode of wireless communication that supports both illumination and communication. One essential function of VLC systems is the dimming control, which requires a sensitive receiver for low-light conditions. The use of an array of single-photon avalanche diodes (SPADs) is one promising approach to enhancing receivers’ sensitivity in a VLC system. However, because of the non-linear effects brought on by the SPAD dead time, an increase in the brightness of the light might degrade its performance. In this paper, an adaptive SPAD receiver is proposed for VLC systems to ensure reliable operation under various dimming levels. In the proposed receiver, a variable optical attenuator (VOA) is used to adaptively control the SPAD’s incident photon rate according to the instantaneous received optical power so that SPAD operates in its optimal conditions. The application of the proposed receiver in systems with various modulation schemes is investigated. When binary on–off keying (OOK) modulation is employed due to its good power efficiency, two dimming control methods of the IEEE 802.15.7 standard based on analogue and digital dimming are considered. We also investigate the application of the proposed receiver in the spectral efficient VLC systems with multi-carrier modulation schemes, i.e., direct current (DCO) and asymmetrically clipped optical (ACO) orthogonal frequency division multiplexing (OFDM). Through extensive numerical results, it is demonstrated that the suggested adaptive receiver outperforms the conventional PIN PD and SPAD array receivers in terms of bit error rate (BER) and achievable data rate. Full article
(This article belongs to the Special Issue Optical Wireless Sensor Networks: Research and Applications)
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