A Survey on visible light communication appliances used in inter-vehicular and indoor communication

Visible Light Communication (VLC) is an embryonic form of wireless communication. Visible light communication uses light waves instead of radio waves for data transmission. Visible light communication provides higher capacity, greater efficiency, better security and availability than radio frequency communication. Light Emitting diodes (LEDs) are used as transmitters as they are more cost effective sources and hence can be used for multiple data transmission. They can be considered as an alternative to radio frequency communication. The evoking area of interest namely indoor and vehicle to vehicle to communication is surveyed in this article. The modulation techniques available for VLC are identified. The VLC communication is compared and analyzed with various communication technologies The various application area that can exploit this upcoming technology have been identified. The challenges, limitations and future scope of this new technology are explored.