Driving toward Connectivity: Vehicular Visible Light Communications Receiver with Adaptive Field of View for Enhanced Noise Resilience and Mobility

Sensors, Journal Year: 2024, Volume and Issue: 24(9), P. 2814 - 2814

Published: April 28, 2024

Wireless communication represents the basis for next generation of vehicle safety systems, whereas visible light (VLC) is one most suitable technologies this purpose. In context, work introduces a novel VLC receiver architecture that integrates field-of-view (FoV) adaptation mechanism in accordance with optical noise generated by sun. order to demonstrate benefits concept, prototype was experimentally tested an infrastructure-to-vehicle (I2V) configuration, which uses LED traffic as transmitter. At side, automatic FoV designed based on mechanical iris placed front photodetector. Adjustments were made values recorded multi-angle sensor, built array IR photodiodes covering elevation from 0° 30° and azimuth −30° 30°. Depending incidence solar light, can adjust ±1° ±22°, taking into account both irradiance sun’s position relative receiver. For experimental testing, two identical receivers used: adjustment, other ±22° fixed FoV. The test results performed at distance 50 m, presence reaching up 67,000 µW/cm2, showed saturated lost link time, adjustable maintained active throughout entire period, bit error rate (BER) less than 10−7.

Language: Английский

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Visible Light Communications-Based Assistance System for the Blind and Visually Impaired: Design, Implementation, and Intensive Experimental Evaluation in a Real-Life Situation

Sensors, Journal Year: 2023, Volume and Issue: 23(23), P. 9406 - 9406

Published: Nov. 25, 2023

Severe visual impairment and blindness significantly affect a person’s quality of life, leading sometimes to social anxiety. Nevertheless, instead concentrating on inability, we could focus their capacities other senses, which in many cases are more developed. On the hand, technical evolution that witnessing is able provide practical means can reduce effects severe have life. In this context, article proposes novel wearable solution has potential improve blind life by providing personal assistance with help Visible Light Communications (VLC) technology. To prevent device from drawing attention not further emphasize user’s deficiency, prototype been integrated into smart backpack multiple functions, localization obstacle detection. demonstrate viability concept, evaluated complex scenario where it used receive location certain object safely travel towards it. The experimental results have: i. confirmed prototype’s ability data at Bit-Error Rate (BER) lower than 10−7; ii. established support for 3 m radius around standard 65 × cm luminaire; iii. demonstrated concept’s compatibility light dimming 1–99% interval while maintaining low BER; and, most importantly, iv. proved use concept enable person obtain information guidance, enabling safer faster way traveling unknown location. As far as know, work first one report implementation evaluation such concept.

Language: Английский

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Packet Loss Minimization and Enhanced Road Traffic Management using Improved Local Interconnect Network (ILIN) in VANET

Published: April 26, 2024

By using the Improved Local Interconnect Network (ILIN) protocol in place of (LIN) protocol, study seeks to reduce risk accidents road traffic management for VANET. Through use an effective cluster head and gateway node selection strategy that takes into account a variety criteria, including distance between sink, novel neighbor nodes, residual energy, cluster-based routing VANET is proposed this research avoid excessive packet loss network. In terms reduced transmission latency by 7.25%, network congestion 9.36%, enhanced information coverage area 5.7%, throughput 4.32%, increased delivery ratio 4.61%, simulation results demonstrate ILIN outperformed LIN protocol. The findings suggested performance.

Language: Английский

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Study on Optical Positioning Using Experimental Visible Light Communication System

Computation, Journal Year: 2023, Volume and Issue: 11(8), P. 161 - 161

Published: Aug. 14, 2023

Visible light positioning systems (VLP) have attracted significant commercial and research interest because of the many advantages they possess over other applications such as radio frequency (RF) systems. In this work, an experimental configuration indoor VLP system based on well-known Lambertian emission, is investigated. The corresponding results are also presented, show that retains high enough accuracy to be operational, even in cases low transmitted power background noise.

Language: Английский

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