Study on Light-Fidelity (Li-Fi) and a Solution to Penetration Through Wall Problem

There is no doubt that wireless communications play a crucial role in today-s society. Information through wireless network has the most desired value. Whoever has access to wireless networks has a very powerful tool in his/her hands. One of the factors influencing the gap between the developed and developing countries is the information availability. Access to the Internet, which can be provided by wireless networks, means the access to the world-s largest library but it would be great if everybody could have advantage of that. It is important not only because of the educational reasons but also for general development. Networks assuring fast and reliable exchange of data will positively affect country-s production and will result in greater efficiency of people-s work and these factors lead to the generation of Li-Fi. Li-Fi technology is nothing but Light-Fidelity communication systems. It is the fastest and cheapest wireless communication systems and is the optical version of the Wi-Fi. The term was first used by Harald Haas in TED Global talk. The technology works by adapting LEDs to send digital information, invisible to the naked eye. A light sensor on a device picks up the digital information sent by the LED, which enables it to be processed by a computer. It is similar to the Wi-Fi except that it uses Light waves instead of Radio waves.