Novel DSP Receiver Architecture for Multi-Channel Visible Light Communications in Automotive Applications

International audience; This article presents a novel visible light communications receiver architecture, designed for automotive applications. A central problematic in this area is the design of a suitable receiver able to face the problems caused by the dynamic situations, by the long distances and also by the environmental conditions. In such circumstances, a solution would be to adapt the communication's data rate to channel conditions, meaning that the communication would take place using different data rates depending on the signal to noise ratio (SNR) and the message priority. Considering the digital filtering better performances, the proposed architecture considers the usage of digital signal processing (DSP) as an alternative to the analog signal treatment. The visible light communication receiver proposed in this article addresses the upper mentioned issues and enables a robust communication even at low SNR.