Now a days all the data’s are transmitted through the wireless medium. Here it is going to discuss about the new concept called the Li-Fi.
Li-Fi means the light fedility.It is one of the latest technologies in the field of wireless communication. In this LED’S are used as the medium for transmission. It provides high-speed communication/transmission as such as the Wi-Fi provides. The transmission of data through illumination by taking the fibre out of fibre optics by sending data through a LED light bulb that varies in intensity. If the LED is on, transmit a digital 1, if it’s off transmit 0. The LEDs can be switched on and off very quickly.
This method can be improved by using an array of LEDs for parallel data transmission, or using mixtures of red, green and blue LEDs to alter the light’s frequency that provides a speed of 10 Gbps.
As compared to the other methods in this Radio waves are replaced by light waves in a new method of data transmission which is being called Li-Fi. The main advantage with Li-Fi is that it is a potential solution to the global wireless spectrum shortage.