Khaberni - Scientists from the Tokyo Institute of Technology in Japan have developed an innovative system for visible light communication (VLC) that uses «LED» lights for stable data transmission even under direct sunlight, and at speeds up to 3.48 Mbps over distances of several meters.
The VLC technology relies on the light emitted from «LED» lamps to transmit data away from traditional radio waves, making communications more reliable in crowded or interference-prone environments, where traditional wireless networks suffer or face regulatory restrictions. The innovative system uses the edges of rising light pulses, making it more resistant to changes in pulse width caused by LED characteristics, and a receiver equipped with multiple photoreceptors and narrow-band filters to minimize the effect of background light, ensuring reliable performance in outdoor environments.
The scientists noted that this system enhances safety in regular driving conditions or with autonomous vehicles. By using low-cost and innovative VLC, it has become possible to transform city infrastructure into an optical communication network, opening the way for smart applications in transport, monitoring, and safety, away from the constraints of traditional radio. This technology is particularly promising in Intelligent Transportation Systems (ITS), where traffic signals and street lights could become platforms for data transmission infrastructure to vehicles.
