Experimental-based propagation model for VLC

Mucchi, Lorenzo; Cataliotti, F. S.; Ronga, Luca Simone; Caputo, Stefano; Marcocci, Patrizio

doi:10.1109/eucnc.2017.7980780

Cited by 6 publications

(4 citation statements)

References 11 publications

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“…In view of real ITS implementations of VLC networks, one has anyhow to consider that the relative positions of vehicles and infrastructures is typically bound to road geometries and signaling infrastructures regulations (such as height and position on the road), and the ideal Line-of-Sight (LoS) condition where optical axes of TX and RX optical equipments coincide is far from being a valid approximation. In such realistic conditions the angular misalignment between TX and RX units can achieve large values, with strong implications on the quality of the VLC communication channel [27], as well as the achievable haul of the VLC link. Whilst a wealth of theoretical and experimental efforts have been made in recent years on development of VLC systems and protocols for ITS I2V and V2V scenarios [28], a detailed study of VLC setups in terms of optical performances is not avalable.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Field of View in Visible Light Communication Systems for Intelligent Transportation Systems

et al. 2020

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This paper reports a detailed experimental characterization of non Line-of-Sight (LoS) optical performances of a Visible Light Communication (VLC) system using a real traffic light for ultra-low latency, infrastructure-to-vehicle (I2V) communications for intelligent transportation systems (ITS) protocols. Despite the implementation of long-sought ITS protocols poses the crucial need to detail how the features of optical stages influence the overall performances of a VLC system in realistic configurations, such characterization has rarely been addressed at present. We carried out an experimental investigation in a realistic configuration where a regular traffic light (TX), enabled for VLC transmission, sends digital information towards a receiving stage (RX), composed by an optical condenser and a dedicated amplified photodiode stage. We performed a detailed measurements campaign of VLC performances encompassing a broad set of optical condensers, and for TX-RX distances in the range 3-50 m, in terms of both effective Field of View (EFOV) and Packet Error Rate (PER). The results show several angle-dependent nontrivial behaviors for different lens sets as a function of position on the measurement grid, highlighting critical aspects for ITS applications as well as identifying most suitable optical configurations depending on the specific application and on the required EFOV. We also provide a theoretical model for both the signal intensity and the EFOV as a function of several parameters, such as distance, RX orientation and focal length of the specific condenser. To our best knowledge, there are no optical and EFOV experimental analyses for VLC systems in ITS applications in literature. Our results could be very relevant in the near future to assess a most suited solution in terms of acceptance angle when designing a VLC system for real applications, where angle-dependent misalignment effects play a non-negligible role, and we argue that they could have more general implications with respect to the pristine I2V case mentioned here.

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Section: Introductionmentioning

confidence: 99%

Characterization of Field of View in Visible Light Communication Systems for Intelligent Transportation Systems

et al. 2020

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“…These measurements and the subsequent analysis led us to develop an accurate propagation model as well as a performance evaluation [22,23]. Vehicular networks applications are envisioned to benefit of communication opportunity given by visible light [20,21]. Visible light communications (VLC) show advantages which are not inherent in RF-based technology, e.g., huge unlicensed spectrum, robustness versus jamming, and much less interference.…”

Section: Vlc For Vehicular Servicesmentioning

confidence: 99%

Experimental Measurements of a Joint 5G-VLC Communication for Future Vehicular Networks

Marabissi

Mucchi

Caputo

et al. 2020

JSAN

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One of the main revolutionary features of 5G networks is the ultra-low latency that will enable new services such as those for the future smart vehicles. The 5G technology will be able to support extreme-low latency thanks to new technologies and the wide flexible architecture that integrates new spectra and access technologies. In particular, visible light communication (VLC) is envisaged as a very promising technology for vehicular communications, since the information provided can flow by using the lights (as traffic-lights and car lights). This paper describes one of the first experiments on the joint use of 5G and VLC networks to provide real-time information to cars. The applications span from road safety to emergency alarm.

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“…In view of real ITS implementations of VLC networks, one has anyhow to consider that the relative positions of vehicles and infrastructures is typically bound to road geometries and signaling infrastructures regulations (such as height and position on the road), and the ideal LoS condition where optical axes of TX and RX optical equipments coincide is far from being a valid approximation. In such realistic conditions the angular misalignment between TX and RX units can achieve large values, with strong implications on the quality of the VLC communication channel [28], as well as the achievable haul of the VLC link. In this context, whilst a wealth of theoretical and experimental efforts have been made in recent years on development of VLC systems and protocols for ITS I2V and V2V scenarios [29], a detailed study of VLC setups in terms of optical performances, and in particular, the characterization of performances of a VLC link for different optics sets in terms of communication cast and effective Field of View of the system, would be of primary importance to assess the range of applicability of ITS protocols in realistic vehicular implementations.…”

Section: Introductionmentioning

confidence: 99%

Optical Characterization of Ultra-Low latency Visible Light Communication System for Intelligent Transportation Systems

Seminara¹,

Nawaz²,

Caputo³

et al. 2020

Preprint

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This paper reports a detailed experimental characterization of optical performances of Visible Light Communication (VLC) system using a real traffic light for ultra-low latency, infrastructure-to-vehicle (I2V) communications for intelligent transportation systems (ITS) protocols. Despite the implementation of long sought ITS protocols poses the crucial need to detail how the features of optical stages influence the overall performances of a VLC system in realistic configurations, such characterization has rarely been addressed at present. We carried out an experimental investigation in a realistic configuration where a regular traffic light (TX), enabled for VLC transmission, sends digital information towards a receiving stage (RX), composed by an optical condenser and a dedicated amplified photodiode stage. We performed a detailed measurements campaign of VLC performances encompassing a broad set of optical condensers, and for TX-RX distances in the range 3-50 m, in terms of both effective field of view (EFOV) and packet error rate (PER). The results show several nontrivial behaviors for different lens sets as a function of position on the measurement grid, highlighting critical aspects as well as identifying most suitable optical configurations depending on the specific application and on the required EFOV. In this paper we also provide a theoretical model for both the signal intensity and the EFOV as a function of several parameters, such as distance, RX orientation and focal length of the specific condenser. To our best knowledge, there are no optical and EFOV experimental analyses for VLC systems in ITS applications in literature. Our results could be very relevant in the near future to assess a most suited solution in terms of acceptance angle when designing a VLC system for real applications, where angle-dependent misalignment effects play a non-negligible role, and we argue that it could have more general implications with respect to the pristine I2V case mentioned here.

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Experimental-based propagation model for VLC

Cited by 6 publications

References 11 publications

Characterization of Field of View in Visible Light Communication Systems for Intelligent Transportation Systems

Characterization of Field of View in Visible Light Communication Systems for Intelligent Transportation Systems

Experimental Measurements of a Joint 5G-VLC Communication for Future Vehicular Networks

Optical Characterization of Ultra-Low latency Visible Light Communication System for Intelligent Transportation Systems

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