Data Communication and data transmission

2. KHALED AKRAM SANY
ID : 161-15-7203

3. What is Li-Fi (LightFidelity)?
Li-Fi is an alternative data transfer system to Wi-Fi that
transmits data using visible light communication rather
instead of radio frequency waves.
It is a complement of RF communication and it solves RF
Bandwidth limitation.
In layman’s terms Li-Fi is transmitting data using actual light
bulbs .we can use internet on our device just when the light
bulbs in our room is switch on.

5. SL. No. Basis of
comparison Wi-Fi Li-Fi
01 Security Not Secured (Can be hacked) Secured Transmission(can’t be
hacked)
02 Data Transmission
Rate
Slower(Use Radio Wave
frequency)
Much faster(Use Visible Light)
03 Range Small Range Large Range
04 Traffic Control Less(Signal Become Weaker as
Traffic Increase)
More(Due to High Speed And Easy
Availity)
05 Where We Can Use Within A Range of WLAN (Usually
Inside A Building)
Anywhere Where Visible Light
Source is Available
06 Cost High Cost (Costly) Low Cost (Cheap)
07 Working Concept Use Of Various Topology Direct Binary Data Serving

6. ApplicationOf Li-Fi
 Traffic Light.
 Intrinsically Safe.
 Airlines.
 On Ocean Beds.
 Street Lamps.
 Hospital And Healthcare.
 RF Spectrum Relief.
 Smart Lighting.
 Mobile Connectivity.
 Location Based Service.