Experimental Observations on the Feasibility of VLC-Based V2X Communications under various Environmental Deterrents

Joshi, Khagendra; Roy, Neelabhro; Singh, Gurinder; Srivastava, Anand

doi:10.1109/ants47819.2019.9118001

Cited by 8 publications

(3 citation statements)

References 11 publications

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“…Moreover, the idea of visibility as a starting point for smoke and fog models uses the same kinds of equations to explain the optical attenuation, they induce to adjust the smoke and fog effect ratio. The channel attenuation coefficients were calculated using an energy simulator on the receiving side, considering the actual radiation pattern used in the LED, which reached about one kilometer [ 106 , 107 ].…”

Section: Technical Challenges In Vehicular Vlc and Solutionsmentioning

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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Section: Technical Challenges In Vehicular Vlc and Solutionsmentioning

confidence: 99%

A Survey of Vehicular VLC Methodologies

Al Hasnawi,

Marghescu

2024

Sensors

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“…Joshi et al [18] in 2019 presented their own approach on feasibility of VLC-based V2X communications under various Environmental Deterrents. Based on their research, different deterrents have various degree of influence on the VLC testbed.…”

Section: Figure 1: Smart City Concept With Various Vlc-based Technologiesmentioning

confidence: 99%

Enhancements of SDR-Based FPGA System for V2X-VLC Communications

Danys¹,

Martínek²,

Jaroš³

et al. 2021

Computers, Materials &Amp; Continua

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This pilot study focuses on a real measurements and enhancements of a software defined radio-based system for vehicle-to everything visible light communication (SDR-V2X-VLC). The presented system is based on a novel adaptive optimization of the feed-forward software defined equalization (FFSDE) methods of the least mean squares (LMS), normalized LMS (NLMS) and QR decomposition-based recursive least squares (QR-RLS) algorithms. Individual parameters of adaptive equalizations are adjusted in real-time to reach the best possible results. Experiments were carried out on a conventional LED Octavia III taillight drafted directly from production line and universal software radio peripherals (USRP) from National Instruments. The transmitting/receiving elements used multistate quadrature amplitude modulation (M-QAM) implemented in LabVIEW programming environment. Experimental results were verified based on bit error ratio (BER), error vector magnitude (EVM) and modulation error ratio (MER). Experimental results of the pilot study unambiguously confirmed the effectiveness of the proposed solution (longer effective communication range, higher immunity to interference, deployment of higher state QAM modulation formats, higher transmission speeds etc.), as the adaptive equalization significantly improved BER, MER and EVM parameters. The best results were achieved using the QR-RLS algorithm. The results measured on deployed QR-RLS algorithm had significantly better Eb/N0 (improved by approx. 20 dB) and BER values (difference by up to two orders of magnitude).

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“…Moreover, the potentials of VLC-based communication are explored in [10] which proves it to be a promising technology in 6G with terahertz bandwidth. Another platform where VLC plays an important role is vehicle-toeverything (V2X) communications which are experimented in [11]. The analyses were carried out at various environmental constraints with on-off keying modulation and showed that VLC supports enhancing the data rate and SINR.…”

Section: Introductionmentioning

confidence: 99%

Performance of Rate Splitting Multiple Access-based Visible Light Communications with Residual Interference and Channel Estimation Errors

Sabapathy,

Maruthu

2024

JCOMSS

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Rate splitting multiple access (RSMA) is a powerful and upcoming multiple access technique that can serve as a promising technology for 5G and beyond applications. Due to the increase in the number of indoor communication devices, the internet of everything (IoE) demands higher bandwidth. Visible light communication (VLC) would be a viable solution for an indoor environment that offers high bandwidth, cost-free spectrum, and low power, and if employed with RSMA, the sum rate can be maximized. In this paper, we derive the closedform outage probability (OP) for the downlink RSMA-based VLC scheme over Rayleigh and Rician channels. We perform outage analyses for perfect as well as imperfect channel state information (CSI) and successive interference cancellation (SIC), respectively to study the system characteristics. Also, we show the superiority of RSMA over non-orthogonal multiple access (NOMA) for VLC-based system in terms of OP over Rayleigh and Rician channels. From the simulations, we show that the RSMA-based VLC system outperforms conventional NOMAbased VLC and the quality of services improves with the line of sight communication i.e., the Rician fading channel.

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Experimental Observations on the Feasibility of VLC-Based V2X Communications under various Environmental Deterrents

Cited by 8 publications

References 11 publications

A Survey of Vehicular VLC Methodologies

A Survey of Vehicular VLC Methodologies

Enhancements of SDR-Based FPGA System for V2X-VLC Communications

Performance of Rate Splitting Multiple Access-based Visible Light Communications with Residual Interference and Channel Estimation Errors

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