Next-Generation Wireless Communications using Optical and Visible Light
Author : Naresh Kumar Meena, Ashutosh Kumar Singh and Chandan Kumar
Abstract :
Visible light communication (VLC), or LiFi, is a potential technique for next-generation wireless networks, particularly indoors. It uses light-emitting diodes (LEDs) for lighting and data transmission. LEDs have various advantages over traditional lighting sources, including longer lifespan, higher tolerance to humidity, faster switching speeds, lower cost, and lower power consumption. Recent advancements have made LEDs even more efficient, enabling them to handle not only lighting and data communication but also indoor positioning and sensing in various applications. Li-Fi, or Light Fidelity, refers to Visible Light Communication (VLC) systems that use light emitting diodes as a medium for high-speed communication. The LI-FI System comprises of headlights, such as LEDs, that operate as transmitters and photo sensors, which act as receivers. With the proliferation of electronics, their use and growth led to advancements in Wi-Fi, which now provides a technology known as Li-Fi. Li-Fi is a technology that uses LED light to carry data quicker and more versatile than Wi-Fi. Because light can go almost anywhere, communication may follow suit. Underwater communications and sensor networks are now the subject of substantial ongoing research in area of high speed communications. This paper delves into the latest research and advancements in VLC systems. It explores new techniques and modulations, VLC channel characteristics, communication using optical cameras, visible light position-ng, and even underwater and vehicular applications. The presented research aims to address the challenges faced by VLC and propose solutions to over-come them.
Keywords :
Infrared, optical spectrum, ultraviolet, visible light, wireless communication
