Evolution of Transmission technique
The wires and the cables are ruling us from many years. Also the Optical Fibers dominated us with it’s higher and faster bit rates and transmission rates. But the Installation of these cables was too difficult and which arose the need of wireless access .
The very First in the wireless access provided to the users was the BLUETOOTH . The Bluetooth covered the range up to 10 meters with the. transmission rate of maximum 1 Mbps . The Bluetooth was followed up by the Wi-Fi Technology . Wi-Fi was an acronym for Wireless Fidelity. Wi-Fi had the range of 90 meters .
Evolution From WI-FI Technology to Gi-Fi
Wi-Fi was a full duplex technique for transmitting data . The data rate of this was 54 Mbps . Replacing these wireless techniques a term naming Gi-Fi was introduced . Gi-Fi’s full form of Gigabit Fidelity also known as Gigabit Wireless. This Gi-Fi is the world’s first Transceiver integrated on a single chip . This Gi-Fi operated at the frequency of 60 GHz on the CMOS process . This allows wireless transfer of Audio and Video data up to 5 Giga bits per second approximately the 10 time faster of the currently used wireless access i .e the Wi-Fi and it is also a cost effective technique than the previously used techniques . This technique also operates within a range of 10 meters which is as similar to the Bluetooth technique . It makes. use of a 5mm square chip with 1 mm antenna . Main thing is that it requires 2mW of Power to transmit data wirelessly over the range of 10 meters. Technology keeps moving forward and Replaced the Gi-Fi technology .
The new technology introduced is the Li-Fi technology getting its name from the Light .The Li-Fi is an acronym for Light Fidelity . The advantage of the Li-Fi over Gi-Fi is the enormous speed .The transmission rate is 200 Gbps. This is going to be provided to the users soon after the release of 5G . This is being worked on in the U.S.A ‘S California.
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