An Optimal Scheme for the Number of Mirrors in Vehicular Visible Light Communication via Mirror Array-Based Intelligent Reflecting Surfaces

Zhan, Ling; Zhao, Hong; Zhang, Wenhui; Lin, Jiming

doi:10.3390/photonics9030129

Cited by 16 publications

(9 citation statements)

References 44 publications

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“…The major demerits of the deep learning methods are it generates thresholding and overfitting issues. 37,38 This method has not been utilized for real-time datasets, and it is reduced the computation time. The multiple activities in the practical situation are required to be solved.…”

Section: Optimal Visible Light Communication Using Fitness-oriented D...mentioning

confidence: 99%

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Optimization of received signal strength in visible light communication using the combination of heuristic algorithms

Pandarinathan,

Jeyachitra

2024

Int J Communication

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SummaryLEDs are a prominent technique for a pervasive communication system using visible light communication (VLC), since LED includes long life expectancy, fast switching, and being visible light and is less expensive, which is safe for the human body, though still many technical problems presented to be addressed, especially in an indoor environment. Due to this, the major aim of this task is to afford a hybridized optimization algorithm that is highly suitable for enabling the signal to noise ratio (SNR) and received signal strength (RSS) maximization in VLC. Here, the coordinate of each point of the receiver photo detector in the VLC system is tuned by the new hybridized algorithm. The fusion of two optimization algorithms like Deer Hunting Optimization Algorithm (DHOA) and Dragonfly Algorithm (DA) termed as Fitness‐oriented Dragonfly‐based DHOA (FD‐DHOA) is used to attain the objective concerning the RSS or received power and SNR. The proposed model tries to attain maximum RSS and SNR at the receiver instead of calculating it at every angle. Moreover, the experimental analysis proves that the developed model validates the orientation that generates an optimum RSS and SNR value at the receiver.

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Section: Optimal Visible Light Communication Using Fitness-oriented D...mentioning

confidence: 99%

“…For example, a few of the challenges of PSO algorithms are depicted here. The major demerits of the deep learning methods are it generates thresholding and overfitting issues 37,38 . This method has not been utilized for real‐time datasets, and it is reduced the computation time.…”

Section: Optimal Visible Light Communication Using Fitness‐oriented D...mentioning

confidence: 99%

Optimization of received signal strength in visible light communication using the combination of heuristic algorithms

Pandarinathan,

Jeyachitra

2024

Int J Communication

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“…In [ 139 ], the authors examined the outage probability, throughput, and delay outage rate of an RIS-aided hybrid VLC/RF V2V system, although the RIS was only considered for the RF link. In [ 140 ], an optimization algorithm was utilized to determine the optimal number of mirrors that maximize energy efficiency while satisfying data rate and bit error rate requirements. Recently, in [ 141 ], researchers derived closed-form expressions for energy efficiency and spectral efficiency in RIS-assisted V2V VLC systems.…”

Section: Vehicular Vlc Research Trends and Future Directionsmentioning

confidence: 99%

A Survey of Vehicular VLC Methodologies

Al Hasnawi,

Marghescu

2024

Sensors

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Visible Light Communication (VLC) has recently emerged as an alternative to RF-based wireless communications. VLC for vehicles has demonstrated its potential for Intelligent Transportation Systems (ITSs) to exchange information between vehicles and infrastructure to achieve ITS core goals, such as improving road safety, passenger comfort, and traffic flow. This paper seeks to provide a detailed survey of vehicular VLC systems. This paper presents an overview of current developments in vehicular VLC systems and their benefits and limitations for experienced researchers and newcomers.

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“…Lastly, the consumed power at the receiver mainly involves the power consumption of analog to digital converter (ADC), trans-impedance amplifier (TIA), filter, LC, and receiver external circuit. Accordingly, the total power consumption of the proposed system is described by [42], [43] P total = P T + P RIS + P R , P T = P S + P DAC + P Filter + P PA + P Driver + P T-Circuit , P RIS = P m × K,…”

Section: Energy Efficiency Optimizationmentioning

confidence: 99%

“…Both the dimension of the considered mirror array-based RIS (in the y-z plane) and the dimension of the wall of interest (in the x-z plane) is 1.0 m×3.0 m. The room size is 5.0 m×5.0 m×3.0 m and the VLC AP is positioned at the center of the room ceiling with a position vector 2.5 m×2.5 m×3.0 m. In the simulation of the NLoS scenario, we set I to zero. All the parameters used in this section are quoted from [2], [8], [38], [40], [42], [43].…”

Section: Parameter Valuementioning

confidence: 99%

Optimized Design of Joint Mirror Array and Liquid Crystal-Based RIS-Aided VLC Systems

Maraqa

Ngatched

2023

IEEE Photonics J.

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Most studies of reflecting intelligent surfaces (RISs)assisted visible light communication (VLC) systems have focused on the integration of RISs in the channel to combat the line-ofsight (LoS) blockage and to enhance the corresponding achievable data rate. Some recent efforts have investigated the integration of liquid crystal (LC)-RIS in the VLC receiver to also improve the corresponding achievable data rate. To jointly benefit from the previously mentioned appealing capabilities of the RIS technology in both the channel and the receiver, in this work, we propose a novel indoor VLC system that is jointly assisted by a mirror array-based RIS in the channel and an LC-based RIS aided-VLC receiver. To illustrate the performance of the proposed system, a rate maximization problem is formulated, solved, and evaluated. This maximization problem jointly optimizes the roll and yaw angles of the mirror array-based RIS as well as the refractive index of the LC-based RIS VLC receiver. Moreover, this maximization problem considers practical assumptions, such as the presence of non-users blockers in the LoS path between the transmitter-receiver pair and the user's random device orientation (i.e., the user's self-blockage). Due to the non-convexity of the formulated optimization problem, a low-complexity algorithm is utilized to get the global optimal solution. A multi-user scenario of the proposed scheme is also presented. Furthermore, the energy efficiency of the proposed system is also investigated. Simulation results are provided, confirming that the proposed system yields a noteworthy improvement in data rate and energy efficiency performances compared to several baseline schemes.Index Terms-Reflecting intelligent surface (RIS), visible light communication (VLC), liquid crystals (LCs), random receiver orientation, achievable rate, energy efficiency (EE), line of sight (LoS) blockage. I. INTRODUCTIONT HE exponential increase in connected devices and the ongoing development of wireless applications are driving the need to explore alternative wireless communications options to radio frequency (RF) communications. Visible light communications (VLC) has emerged as a bandwidth-abundant, cost-effective, and secure communications technology. Subsequently, VLC is seen as a promising candidate for complementing RF communications in future wireless networks [1].In ordinary VLC systems, the line-of-sight (LoS) availability between the transmitter and the receiver is essential for

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An Optimal Scheme for the Number of Mirrors in Vehicular Visible Light Communication via Mirror Array-Based Intelligent Reflecting Surfaces

Cited by 16 publications

References 44 publications

Optimization of received signal strength in visible light communication using the combination of heuristic algorithms

Optimization of received signal strength in visible light communication using the combination of heuristic algorithms

A Survey of Vehicular VLC Methodologies

Optimized Design of Joint Mirror Array and Liquid Crystal-Based RIS-Aided VLC Systems

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