Increasing Vehicular Visible Light Communications Range Based on LED Current Overdriving and Variable Pulse Position Modulation: Concept and Experimental Validation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Sensors Année : 2023

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

Cătălin Beguni
  • Fonction : Auteur
Alin Dan Potorac
Eduard Zadobrischi
  • Fonction : Auteur
Mihai Dimian
  • Fonction : Auteur

Résumé

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.
Fichier principal
Vignette du fichier
sensors-23-03656-v2.pdf (3.02 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Licence

Dates et versions

hal-04233283 , version 1 (27-10-2023)

Licence

Identifiants

Citer

Cătălin Beguni, Alin Mihai Căilean, Sebastian Andrei Avătămăniței, Alin Dan Potorac, Eduard Zadobrischi, et al.. Increasing Vehicular Visible Light Communications Range Based on LED Current Overdriving and Variable Pulse Position Modulation: Concept and Experimental Validation. Sensors, 2023, 23 (7), ⟨10.3390/s23073656⟩. ⟨hal-04233283⟩
9 Consultations
58 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More