Exploring Secure Visible Light Communication in Next-generation (6G) Internet-of-Things

In this paper we investigate the impact of the passband shift (PS) phenomenon on optical wireless communication (OWC) systems based on wavelength division (WD). We first introduce the associated challenges, then we discuss the mathematical framework needed to evaluate the performance of systems based on WD when the impact of the PS phenomenon is taken into account. We introduce the concept of spectral overlap (SO) and discuss its role in the design of WD solutions. Results show that this design phase has to take the SO into account, and that its careful balance with the channel gain is essential when multiple colours are used for parallel communication in OWC.

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“…Then obtaining the PDF of the sine of the AoI can be achieved by differentiating (5) with respect to η:…”

Section: A Approximation Of the Cwl Of A Shifted Of Spectrummentioning

confidence: 99%

Impact of Passband Shift in Optical Wireless Communication Systems based on Wavelength Division

Martena¹,

Bian²,

Haas

2022

ICC 2022 - IEEE International Conference on Communications

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“…Optical wireless technology has many applications, including indoor VLC communication [14], vehicular communication [15], and VLC-based Internet-of-Things (IoT) [16], among others. PB-ToF systems typically use two electronic shutters, which are known as gates.…”

Section: Related Workmentioning

confidence: 99%

Passive 3D Time-of-Flight Imaging leveraging VLC Infrastructure

et al. 2022

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Visible light communication (VLC), as a readily available communication technology, can provide a practical and low-cost solution for power-constrained active Time-of-Flight (ToF) imaging in indoor settings. This paper demonstrates a novel passive ToF imaging concept that exploits opportunity illuminators, e. g., VLC sources. This differs from classical ToF methods, in that two parallel sensing channels are used to attain passive 3D imaging. We studied a bistatic geometry using the pulsebased (PB) ToF method. Furthermore, we explored both uniform and non-uniform sampling approaches in the time-shift domain, in order to preserve depth accuracy with a minimal number of noise-contaminated measurements. Using a matched filtering method, we attained a negligible root-mean-square error (RMSE) even for the low signal-to-noise ratio (SNR) of the measurements. We corroborate the proposed framework by conducting the first reported passive-ToF 3D imaging experiments of this kind. Our "proof-of-concept" witnessed the feasibility of VLC-enabled passive ToF, thus opening unprecedented co-design avenues with mainstream optical wireless communication (OWC) variants.

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“…The coverage area of each light emitting diode (LED) light source can constitute an attocell naturally, which is very beneficial for the interconnection of industrial equipment [5]. Therefore, VLC with high-speed, high-density properties can play an important role in industrial manufacturing [6].…”

Section: Introductionmentioning

confidence: 99%

Research on Efficient Handover Mechanism for Cubic Receiver in Visible Light Communication

Song

Zhang

et al. 2023

Electronics

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Visible light communication (VLC) has the advantages of rich spectrum resources, endogenous safety and anti-electromagnetic interference, so the application of VLC to the Industrial Internet of Things is one of its current development directions. Due to the limited coverage of light emitting diodes (LEDs), dense placement is often required in industrial manufacturing scenarios. However, mobile users will face frequent handover between these LEDs, and reliable reception of signals on mobile terminals requires receivers with a large detection area. In this paper, we used a cubic receiver to increase the detection area, which is more conducive to signal reception than a single photo-detector plane receiver. Then we studied the handover scheme for a cubic receiver to ensure the performance of the communication link. We also rotated the receiver to further improve signal quality and obtain the optimal rotation angles using a genetic algorithm with low complexity. The results show that a cubic receiver has a better received signal quality than a plane receiver, and rotation can enhance the signal quality more. In addition, it can be seen that the handover for the cubic receiver depends not only on the distance, but also on its structure, angle and position. Considering these factors jointly when performing a handover, users can connect to LEDs, which provide the best quality of service, and system communication performance can be improved.

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Exploring Secure Visible Light Communication in Next-generation (6G) Internet-of-Things

Cited by 16 publications

References 64 publications

Impact of Passband Shift in Optical Wireless Communication Systems based on Wavelength Division

Impact of Passband Shift in Optical Wireless Communication Systems based on Wavelength Division

Passive 3D Time-of-Flight Imaging leveraging VLC Infrastructure

Research on Efficient Handover Mechanism for Cubic Receiver in Visible Light Communication

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