Free space optical communication in the visible bandwidth for V2V safety critical protocols

Corsini, R.; Pelliccia, Riccardo; Cossu, G.; Khalid, Arslan; Ghibaudi, Marco; Petracca, Matteo; Pagano, Paolo; Ciaramella, E.

doi:10.1109/iwcmc.2012.6314359

Cited by 18 publications

(8 citation statements)

References 11 publications

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“…Moreover, Colour Shift Keying (CSK) is also considered as third modulation scheme. Focusing on VLC in ITS, two types of systems, namely, camera-based [11], [12], [13], [14], [15] and photodiode-based [16], [17], [18], [19], [20], [21], [22] systems are considered in literature. The high speed cameras are expansive and computationally complex to be used in automotive industry.…”

Section: Introductionmentioning

confidence: 99%

IEEE 802.15.7-Compliant Ultra-Low Latency Relaying VLC System for Safety-Critical ITS

Nawaz

Seminara

Caputo

et al. 2019

IEEE Trans. Veh. Technol.

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The integration of Visible-Light Communications technology (VLC) in Intelligent Transportation Systems (ITS) is a very promising platform for a cost-effective implementation of revolutionary ITS and cooperative ITS protocols. In this paper, we propose an infrastructure-to-vehicle-to-vehicle (I2V2V) VLC system for ITS, implementing it through a regular LED traffic light serving as a transmitter and a digital Active Decodeand-Relay (ADR) stage for decoding and relaying the received information towards further incoming units. The proposed VLC system targets the challenging and important case of ultra-low latency ADR transmission of short packets, as this is needed for emerging applications of automatic braking, car platooning and other critical automatic and/or assisted driving applications. The experimental validation of the ADR VLC chain, as well as a thorough statistical analysis of errors distribution in the transmission, has been performed for short to medium distances, up to 50 meters. The performances of the designed system are evaluated by measuring the packet error rate (PER) and latency in the whole ADR transmission chain. Our analysis shows that our system attains ultra-low, sub-ms latencies at 99.9% confidence level for PER as high as 5 × 10 −3 , yet granting a latency below 10 ms even for distances of 50 m. The demonstrated system prototype is compatible with IEEE 802.15.7 standard.

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Section: Introductionmentioning

confidence: 99%

IEEE 802.15.7-Compliant Ultra-Low Latency Relaying VLC System for Safety-Critical ITS

Nawaz

Seminara

Caputo

et al. 2019

IEEE Trans. Veh. Technol.

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“…1) Photodiode-based: Kim et al [23] presents a static VLC link with 500 kbps data rate at a communication distance of 20 m with a light shield and a red filter to avoid saturation under strong sunlight. To enhance the communication range, Corsini et al [15] concentrates the output power of the transmitter to a divergence angle of 18 • by adding a lens in front of the transmitter, reporting a data rate of 115 kbps at 31 m. Longer communication range are demonstrated in other works [6,26], delivering a communication range of 40-50 m with 15-20 kbps data rate. Longer range of 1.2 km with 2 Mbps data rate is reported in [21], yet their system only allows a fixed, very narrow FOV.…”

Section: Related Workmentioning

confidence: 99%

RayTrack

Shen

Tsai

2021

Proceedings of the 19th Annual International Conference on Mobile Systems, Applications, and Services

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Connected autonomous vehicles have boosted a high demand on communication throughput in order to timely share the information collected by in-car sensors (e.g., LiDAR). While visible light communication (VLC) has shown its capability to offer Gigabit-level throughput for applications with high demand for data rate, most are performed indoors and the throughput of outdoor VLC drops to a few Mbps. To fill this performance gap, this paper presents RayTrack, an interference-free outdoor mobile VLC system. The key idea of RayTrack is to use a small but real-time adjustable FOV according to the transmitter location, which can effectively repel interference from the environment and from other transmitters and boost the system throughput. The idea also realizes virtual point-to-point links, and eliminates the need of link access control. To be able to minimize the transmitter detection time to only 20 ms, RayTrack leverages a high-compression-ratio compressive sensing scheme, incorporating a dual-photodiode architecture, optimized measurement matrix and Gaussian-based basis to increase sparsity. Real-world driving experiments show that RayTrack is able to achieve a data rate of 607.9 kbps with over 90% detection accuracy and lower than 15% bit error rate at 35 m, with 70 -100 km/hr driving speed. To the best of our knowledge, this is the first working outdoor VLC system which can offer such range, throughput and error performance while accommodating freeway mobility. CCS CONCEPTS• Networks → Mobile networks; • Hardware → Signal processing systems.

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“…On the other hand, low-cost dedicated photodetectors are quite efficient regarding noise performances and data rates, and they seem to provide a good, lower-cost alternative for vehicular communications. Recent works focused on either V2V applications with data rates ranging from 20 kbaud [19] up to 115 kbaud [20], or I2V [21][22][23] implementations. In particular, in ref.…”

Section: Introductionmentioning

confidence: 99%

Low-Latency VLC System with Fresnel Receiver for I2V ITS Applications

Nawaz

Seminara

Caputo

et al. 2020

JSAN

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This work presents a characterization of a low-cost, low-latency Visible Light Communication (VLC) prototype for infrastructure-to-vehicle (I2V) communication for future Intelligent Transportation Systems (ITS). The system consists of a regular traffic light as a transmitter (the red light is modulated with the information), and a photodetector as a receiver. The latter is equipped with low-cost Fresnel lenses as condensers, namely, 1 ′ ′ Fresnel and 2 ′ ′ Fresnel, to increase the optical gain of the system at the receiver. The system is capable of Active Decode and Relay (ADR) of information to further incoming units. The experimental characterization of amplitude and Packet Error Rate (PER) for the proposed system has been performed for distances up to 50 m. The results show that by incorporating the 2 ′ ′ Fresnel lens in the photodetector, an error free ( PER ≤ 10 − 5 ) I2V communication is established up to 50 m. Furthermore, the prototype can be used for both broadcast and beaconing transmission modes. This low-cost VLC-based system could offer sub-millisecond latency in the full ADR process for distances up to 36 m, which makes it suitable for integration in Cellular-V2X (C-V2X) and 5G platforms.

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Free space optical communication in the visible bandwidth for V2V safety critical protocols

Cited by 18 publications

References 11 publications

IEEE 802.15.7-Compliant Ultra-Low Latency Relaying VLC System for Safety-Critical ITS

IEEE 802.15.7-Compliant Ultra-Low Latency Relaying VLC System for Safety-Critical ITS

RayTrack

Low-Latency VLC System with Fresnel Receiver for I2V ITS Applications

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