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Abstract

Various intelligent transportation systems are proposed in different forms of wireless communication technologies. Recently, the importance of visible light communication and free-space optics has been demonstrated in accomplishing vehicle-to-vehicle and infrastructure-to-vehicle communication systems, due to power efficiency, free licenses, and safety for human health. In this paper, a new hybrid relay system supported by free-space optics/visible light communication with two scenarios is proposed. The first one is that the data are transferred from the source to the relay through a free-space optics communication link and are then directed to the destination through a visible light communication link. The second scenario is that the data are transmitted from the source to the destination passing through two different relays to ensure larger coverage. A 10−6 bit error rate is achieved at a distance of 900 m for the first scenario with a remarkable signal-to-noise ratio of ~25.5 dB, while the largest distance that can be covered by the second scenario is 1200 m with a signal-to-noise ratio of ~30 dB.
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Authors and Affiliations

Suzan M. EL-Garhy
1 2
Ashraf A. M. Khalaf
2
ORCID: ORCID
Moustafa H. Aly
3
ORCID: ORCID
Mohamed Abaza
3
ORCID: ORCID

  1. Electronics and Communications Department, College of Engineering, Higher Technological Institute, Tenth of Ramadan, Egypt
  2. Electronics and Communications Department, Faculty of Engineering, Minia University, Egypt
  3. Electronics and Communications Department, College of Engineering and Technology, Arab Academy for Science Technology and Maritime Transport, Egypt

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