Introduction, History and Comparison with other wireless technologies

1. Submitted By,
Surabhi

2.  Li-Fi means “Light
Fedelity”.
 It transmits data through illumination,
sending data through a LED light bulb
that varies intensity faster than human
eye can follow.

3. The technology truly began
during the 1990’s in countries
like Germany, Korea and
Japan where they discovered
LED’s could be retrofitted to
send information. Harald
Haas continues to wow the
world with the potential to use
light for communication.
Harald Haas

4.  It can be thought of as a light based Wi-Fi.
 It uses light instead of radio waves to transmit
information.
 Unlike modems in Wi-Fi, Li-Fi uses transceiver-
fitted LED lamps that can light a room as well
as transmit and receive information.

7. Technology Speed
Wi-Fi – IEEE 802.11n 150 Mbps
Bluetooth 3 Mbps
IrDA 4 Mbps
Li-Fi >1 Gbps