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Increasing Vehicular Visible Light Communications Range Based on LED Current Overdriving and Variable Pulse Position Modulation: Concept and Experimental Validation

Beguni, Cătălin ; Căilean, Alin-Mihai ; Avătămăniței, Sebastian-Andrei ; Potorac, Alin-Dan ; Zadobrischi, Eduard ; Dimian, Mihai

Sensors (Basel, Switzerland), 2023-03, Vol.23 (7), p.3656 [Periódico revisado por pares]

Switzerland: MDPI AG

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Increasing Vehicular Visible Light Communications Range Based on LED Current Overdriving and Variable Pulse Position Modulation: Concept and Experimental Validation
Autor: Beguni, Cătălin ; Căilean, Alin-Mihai ; Avătămăniței, Sebastian-Andrei ; Potorac, Alin-Dan ; Zadobrischi, Eduard ; Dimian, Mihai
Assuntos: Communication ; Communications equipment ; Engineering Sciences ; inter-vehicle communications ; Irradiance ; LED current overdriving ; Light emitting diodes ; Lighting ; Norms ; Optical communication ; optical communications ; optical wireless communications ; Overheating ; Pulse position modulation ; Radiation ; Roads & highways ; Signal and Image processing ; Signal to noise ratio ; Traffic ; traffic safety ; Transmitters ; vehicle to vehicle communications ; Vehicles
É parte de: Sensors (Basel, Switzerland), 2023-03, Vol.23 (7), p.3656
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Due to its unique advantages, the integration of Visible Light Communications (VLC) in vehicle safety applications has become a major research topic. Nevertheless, as this is an emergent technology, several challenges must be addressed. One of the most important of these challenges is oriented toward increasing vehicular VLC systems' communication range. In this context, this article proposes a novel approach that provides a significant communication distance enhancement. Different from most existing works on this topic, which are based on refining the VLC receiver, this new article is focused on improving the VLC system based on the benefits that can be achieved through the VLC transmitter. The concept is based on Light-Emitting Diode (LED) current overdriving and a modified Variable Pulse Position Modulation (VPPM). Therefore, LED current overdriving provides the VLC receiver higher instantaneous received optical power and improved Signal-to-Noise Ratio (SNR), whereas the use of the VPPM ensures that the VLC transmitter respects eye regulation norms and offers LED protection against overheating. The concept has been experimentally tested in laboratory conditions. The experimental results confirmed the viability of the concept, showing an increase of the communication range by up to 370%, while maintaining the same overall optical irradiance at the VLC transmitter level. Therefore, this new approach has the potential to enable vehicular VLC ranges that cover the requirements of communication-based vehicle safety applications. To the best of our knowledge, this concept has not been previously exploited in vehicular VLC applications.
Editor: Switzerland: MDPI AG
Idioma: Inglês

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Increasing Vehicular Visible Light Communications Range Based on LED Current Overdriving and Variable Pulse Position Modulation: Concept and Experimental Validation

Beguni, Cătălin ; Căilean, Alin-Mihai ; Avătămăniței, Sebastian-Andrei ; Potorac, Alin-Dan ; Zadobrischi, Eduard ; Dimian, Mihai

Switzerland: MDPI AG

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