Characterizing link asymmetry in vehicle-to-vehicle Visible Light Communications

Tseng, Hua-Yen; Wei, Yu-Lin; Chen, Ailing; Wu, Hao-Ping; Hsu, Hsuan L.; Tsai, Hsin-Mu

doi:10.1109/vnc.2015.7385552

Cited by 19 publications

(9 citation statements)

References 9 publications

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“…The channel DC gain H(0) then depends on the type of light source used, especially on its beam pattern. [14] shows that the Lambertian model is applicable when the vehicle bearing is less than 10 degrees, which is the case in our real-world experiments. Therefore, the DC gain is defined as:…”

Section: Theoretical Comparison Of the Ook And Ofdmsupporting

confidence: 55%

Comparison of OFDM and OOK modulations for vehicle-to-vehicle visible light communication in real-world driving scenarios

2019

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Visible light communication (VLC) is seen as an interesting technology to complement the IEEE 802.11p-based systems commonly used for vehicle-to-vehicle (V2V) communication. However, the reliability of such a V2V-VLC link in real-world driving scenario had not been demonstrated up to very recently. The results obtained, at that time with orthogonal frequency division multiplexing (OFDM) at 2 kbps, are complemented in this paper with additional results using on-off keying (OOK) at 100 kbps. The overall performances of this second modulation are rather close to those of OFDM. The packet reception rate (PRR) remains more than 90% over a service area of 30 m lengthwise and the link is not affected by multipath propagation. Error-free transmission is even demonstrated over 60 m using repetition coding, at the cost of a reduced data rate of 10 kbps. However, it is shown that OFDM is able to cope with the narrow-band interferences generated by outdoor lighting such as LED signs whereas the OOK link is completely jammed. Despite its simplicity and good overall performances, OOK is thus not as robust as OFDM to the variety of situations experienced in real-world driving scenario.

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Section: Theoretical Comparison Of the Ook And Ofdmsupporting

confidence: 55%

Comparison of OFDM and OOK modulations for vehicle-to-vehicle visible light communication in real-world driving scenarios

2019

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“…In general, the main feature of the vehicular VLC is the variable intensity of the headlights and taillights (i.e., asymmetry) [ 114 , 122 , 123 ]. In addition, the headlights and taillights in the vehicular VLC serve two purposes simultaneously: illuminating and transmitting information.…”

Section: Vehicular Vlc Channel Modeling and Propagation Characteristicsmentioning

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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“…Further to this, the signal propagation depends on the radiation pattern of the lamp, which is different even in the V2V case where the vehicle from behind uses a headlamp while the car in front of it transmits with a taillamp. These factors create an unequal link range between the nodes, which leads to some open issues [ 15 ]. On the other hand, the VLC channel is more robust to variations than the DSRC channel.…”

Section: Introductionmentioning

confidence: 99%

VLC Network Design for High Mobility Users in Urban Tunnels

Torres-Zapata

Guerra

Rabadán

et al. 2021

Sensors

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Current vehicular systems require real-time information to keep drivers safer and more secure on the road. In addition to the radio frequency (RF) based communication technologies, Visible Light Communication (VLC) has emerged as a complementary way to enable wireless access in intelligent transportation systems (ITS) with a simple design and low-cost deployment. However, integrating VLC in vehicular networks poses some fundamental challenges. In particular, the limited coverage range of the VLC access points and the high speed of vehicles create time-limited links that the existing handover procedures of VLC networks can not be accomplished timely. Therefore, this paper addresses the problem of designing a vehicular VLC network that supports high mobility users. We first modify the traditional VLC network topology to increase uplink reliability. Then, a low-latency handover scheme is proposed to enable mobility in a VLC network. Furthermore, we validate the functionality of the proposed VLC network design method by using system-level simulations of a vehicular tunnel scenario. The analysis and the results show that the proposed method provides a steady connection, where the vehicular node is available more than 99% of the time regardless of the number of vehicular nodes on this network. Additionally, the system is able to achieve a Frame-Error-Rate (FER) performance lower than 10−3.

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Characterizing link asymmetry in vehicle-to-vehicle Visible Light Communications

Cited by 19 publications

References 9 publications

Comparison of OFDM and OOK modulations for vehicle-to-vehicle visible light communication in real-world driving scenarios

Comparison of OFDM and OOK modulations for vehicle-to-vehicle visible light communication in real-world driving scenarios

A Survey of Vehicular VLC Methodologies

VLC Network Design for High Mobility Users in Urban Tunnels

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