Roadside LED array acquisition for road-to-vehicle visible light communication using spatial-temporal gradient values

Kento Nakamura; Ruiyi Huang; Takaya Yamazato; Masayuki Kinoshita; Koji Kamakura; Shintaro Arai; Tomohiro Yendo; Toshiaki Fujii

doi:10.1587/comex.2022TCL0008

Special Cluster on Emerging Communication Technologies in Conjunction with Main Topics of ICETC2021

Roadside LED array acquisition for road-to-vehicle visible light communication using spatial-temporal gradient values

Kento Nakamura, Ruiyi Huang, Takaya Yamazato, Masayuki Kinoshita, Koji Kamakura, Shintaro Arai, Tomohiro Yendo, Toshiaki Fujii

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Keywords: intelligent transport systems, light-emitting diode transmitter, visible light communication, high-speed camera, LED array acquisition

JOURNAL FREE ACCESS

2022 Volume 11 Issue 8 Pages 462-467

DOI https://doi.org/10.1587/comex.2022TCL0008

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Abstract

Most of the previous research on the acquisition of the LED Array transmitter assumes that the onboard receiver approaches the LED transmitter from the car’s front. In this study, we considered a case where the vehicle’s receiver crosses the LED transmitter. This letter modifies the algorithm using spatial-temporal gradient values to detect LED arrays. As a result, we achieved error-free acquisition and successfully communicated up to 9728 [bits] at a vehicle speed of 25 [km/h].

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