information about wireless communication systems

1. WIRELESS COMMUNICATION
SYSTEM
BY
G.VISHNUVARTHINI

2. CONTENT
 INTRODUCTION
 TYPES
 TYPES EXPLANATIONS
 TYPICAL FREQUENCIES
 ADVANTAGES
 DISADVANTAGES
 APPLICATIONS
 FUTURE TECHNOLOGIES
 COCLUSION

3. INTRODUCTION
 Wireless communication is a method of
transmitting information from one point to other ,
without using any connection like wires, cables or
any physical medium.
 Generally in a communication system,
information is transmitted from transmitter to
receiver that are placed over a limited distance.

4. WHY WIRELESS COMMUNICATION?
1
Freedom
from wires
and global
coverage
2
No bunch
of wires
running
from here
and there
3
“auto
magical”
instantaneo
us
communica
tion
e.g. Wi-Fi
4
Communi
cation can
reach
where
wiring is
infeasible
5
E.g.- rural
areas ,
buildings
,battlefield
&
outerspace
6
Flexibility
to connect
multiple
devices

5. TYPES OF WIRELESS COMMUNICATION SYSTEMS
1 Television and radio
broadcasting
2 satellite
communication
3 mobile telephone
communication system
4 Global positioning system(GPS)
5Bluetooth
6paging
7Wireless local area
network(WLAN)
8
Infrared communication
TYPES OF
WIRELESS

7. PAGING SYSTEM
Broad coverage for short
messages and overtaken
by cellular
Message broadcast
from all base
stations
Optimized for one
way transmission

8. INFRARED WIRELESS
COMMUNICATION
 IR wireless is the use of wireless technology
in devices or systems that convey data
through infrared radiation.
 Infrared is electromagnetic energy at a
wavelength or wavelengths some what
longer than those of red light.

9. Levels & Hierarchy

10. TYPICAL FREQUENCIES
2
TV
BROADC
AST-200
MHZ
1
FM
RADIO-88
MHZ
3
GPS-1.2
GHZ
4
BLUETOOT
H-2.4 GHZ
5
WI-FI-2.4
GHZ

11. ADVANTAGES
Flexibility1
Ease of use2
Durability3

12. DISADVANTAGES
1 Compatibility issue
2 Ethernet
3 Significantly Slower
than a wired network

13. APPLICATIONS
Computer interface devices
Wi-fi
Wireless power transfer
cell phones
Television remote control
Security systems

15. WIRELESS TECHNOLOGIES FOR
FUTURE MOBILE DEVICES AND
GADGETS
 Wi-fi(2.4 GHZ and 5GHZ)
 wiGig is an advanced version of wi-fi( operates 60
GHZ)
 Li-Fi(speed can’t be detected by human eyes,
specific light sensors can detect these signals)
 NFC(near field communication technology)
 5G NR Millimeter waves

16. CONCLUSION
 The swift development of wireless has enabled so
many parallel technologies, increased productivity
and even saved countless lives.
 The future for wireless looks set to include even
more applications which can give humans an
edge.
 Another positive of this growth is that wireless
technology has gotten really cheap which means
that more people have access to it.
 Wireless innovations have made the world a much
smaller place .

17. Thank you