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Wireless Communication Ppt1

Wireless communication allows information to be transferred between devices without wires. The document discusses several common modes of wireless communication including Bluetooth, NFC, WiFi, and LiFi. Bluetooth uses short-range radio links, NFC allows data transfer through electromagnetic field induction when devices are 10cm or closer, WiFi enables internet access on mobile devices within range of a base station, and LiFi transmits data using visible light communication through LED bulbs. The modes were compared in terms of applications, benefits, and technology. Advantages of wireless communication include mobility, speed, cost effectiveness, and flexibility while disadvantages include potential security issues and higher power consumption compared to wired connections.

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Gowsalyaa Vijayaraman
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71 views21 pages

Wireless Communication Ppt1

Wireless communication allows information to be transferred between devices without wires. The document discusses several common modes of wireless communication including Bluetooth, NFC, WiFi, and LiFi. Bluetooth uses short-range radio links, NFC allows data transfer through electromagnetic field induction when devices are 10cm or closer, WiFi enables internet access on mobile devices within range of a base station, and LiFi transmits data using visible light communication through LED bulbs. The modes were compared in terms of applications, benefits, and technology. Advantages of wireless communication include mobility, speed, cost effectiveness, and flexibility while disadvantages include potential security issues and higher power consumption compared to wired connections.

Uploaded by

Gowsalyaa Vijayaraman
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPTX, PDF, TXT or read online on Scribd
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Presented by:

V.Gowsalyaa (EEE)
CONTENTS
• What is wireless communication?
• Modes of wireless communication!
– Bluetooth
– NFC (Near Field Communication)
– Wifi
– Lifi
• Advantages
• Disadvantages
What is wireless communication?
• In layman language it is
communication in which information
is transferred between two or more
points without any wire.
Modes of wireless communication!

• Bluetooth

• NFC (Near Field Communication)

• Wifi

• Lifi
What is Bluetooth?
• Bluetooth is a method for data
communication that used short
range radio links to replace cables
between computers and their
connected units.
• Named on – Danish king harald
Bluetooth
• Developed in Scandinavia.
How does Bluetooth works?
• Bluetooth networking transmits data via low-
power radio waves. It communicates on a
frequency of 2.45 gigahertz.
• Bluetooth doesn't require line of sight between
communicating devices.
• Bluetooth can connect up to eight
devices simultaneously.
• Bluetooth uses a technique called spread-
spectrum frequency hopping
Applications of bluetooth!

• Bluetooth speakers
• Bluetooth headphones
• Cable less connections to the printers
• Bluetooth keyboard
• Etc
What is NFC?
• NFC is a short-range high frequency wireless
communication technology that enables the
exchange of data between devices over about
a 10 cm distance.
• It allows devices to establish peer-to-peer
radio communications, passing data from one
device to another by touching them or putting
them very close together.
Benefits over Bluetooth..
• The significant advantage of NFC over Bluetooth
is the shorter set-up time.
• Due to its shorter range, NFC provides a higher
degree of security than Bluetooth and makes
NFC suitable for crowded areas.
• NFC can also work when one of the devices is
not powered by a battery.
• Unlike Bluetooth, no pairing code is needed.
Applications…

• NFC chips or tags are very small in size, it can


be embedded in the movie posters, real estate
agent posters etc.
• Health care department.
• NFC will replace car keys, ID badges and
credit/debit cards.
• Implementation in food packaging, flyers and
merchandisers as well.
What is wifi?
 Wifi or wireless fidelity, allows you to access the internet
while on the move; you can remain online while moving
from one area to another in a wireless mode.

 Wifi enabled computers send and receive data indoors


and out ;anywhere within the range of a base station.

 Its just as fast as cable modem connection.

 Wifi is a generic term that refers to the IEEE 80211


communications standard for wireless local area
networks(WLANs)
Lifi? (light fidelity)
lifi is transmission of data through illumination
by taking the fiber out of fiber optics by sending
data through LED light bulb.
This varies in intensity faster than human eye can
follow.
It is the fast and cheap wireless communication
system which is optical version of wifi.
First introduced by professor HARALD HASSIN in
2011.
Applications

• In vehicles and traffic lights.


• In aircrafts and underwater.
• Hospitals
• Street lamps
• Petroleum and Chemical industries
Advantages of wireless communication

• Wireless
• Speed
• Cost
• Durability
• Flexibility
• Place of device
Disadvantages of wireless
communication

• Power consumption

• Security issues

• Compatibility issues
THANK YOU

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