1. Presented by :
Samruddhi Chikhalikar
Shweta Jadhav
Nishigandha Katkade
( K.K.Wagh Women’s Polytechnic, Nashik. )

2. INTRODUCTION TO WIRELESS
COMMUNICATION
 The word wireless is dictionary defined “having
no wires” .
 Wireless is the term used to describe any
computer or mobile network where there is no
physical wired connection between sender and
receiver, but rather the network is connected by
radio waves and or microwaves to maintain
communications.
 Our ultimate goal is to communicate with any
type of information with anyone, at anytime, from
anywhere. This is possible with the aid of
“WIRELESS TECHNOLOGY”

3. WIRELESS SYSTEM
EVOLUTION

4.  1G refers to the first generation of
wireless telephone technology.
 Introduced in the early 1970s and
completed in early 1990s.
 It has a speed of 2.4kbps.
 It allows the voice calls in 1 country.
 1G network use Analog Signal.
 Many fundamental problems were
solved by these early systems.

5. DRAWBACKS OF 1G :
 Poor Voice Quality
 Poor Battery Life
 Large Phone Size
 No Security
 Limited Capacity

6.  2G refers to the second
generation of wireless telephone
technology.
 Introduced in the early. Late
1980s and finished in 2000s
 2G network use digital signals.
 It’s data speed was up to 64kbps.
 Voice transmission and SMS

7. DRAWBACKS OF 2G :
 Weaker digital signals
 Occasional dropouts in signal
 Reduced range of sound
 It is significantly slower

8.  3G technology refer to third
generation .
 It was introduced in the late
1990s to late 2000s
 Transmission speed from
125kbps to 2Mbps
 3G network use digital signals.
 accommodates Web based
applications and audio
and video files.

9. DRAWBACKS OF 3G :
 Battery uses is more
 Hard to implement
 Need complicated hardware
 High Bandwidth Requirement
 Expensive equipment required
to implement next generation
network.
4G
3G

10. 10

12.  4G usually refers to next generation of wireless
technology that promises higher data rates and
expanded multimedia services.
 Starting from late 2000s that offers speeds that
are around 10 times faster than the current
third-generation (3G) networks
 Transmission speed from 100Mbps to 1Gbps.
 Accessing information anywhere, anytime, and
receiving a large volume of information, data,
pictures, video, and so on, are the keys of the 4G
infrastructures.

13.  Mobile Multimedia
 Anytime Anywhere
 Global Mobility Support
 Integrated Wireless Solution
 Customized Personal Services
.
One of the basic term used to
describe 4G is MAGIC :

15. 15
What is needed to Build 4G
Networks of Future?
 Lower Price Points Only Slightly Higher than
Alternatives
 More Coordination Among Spectrum Regulators
Around the World
 More Academic Research
 Standardization of wireless networks
 Non-disruptive or proper Implementation

16. Features of 4G Technology
 Provide any kind of service at any time as per user
requirements, anywhere.
 More Security
 High Speed
 High Capacity
 Low Cost Per-bit.
 High performance
 Interoperability and easy roaming
 Fully converged services
 Devices :more user friendly
 Utilization of Smart antennas
16

17. APPLICATIONS :
1) 4G Car :
For maps or gps used to guide the directions to
the required destinations also to connect with
your vehicle remotely and faster access to
vehicle apps.

19. 2) Sensors in public vehicle:
warning sensor used in the new generation
automobile instantly creates a mobile fleet. And
since 4G networks can include inhereted geo
location without GPS, first responders will
know where the vehicle

21. 3) Cameras in traffic light:
Some major cities have deployed cameras on
traffic lights and send those images back to a
central command center.4G networks allow cities
to security systems.

22. 4) Traffic control during disasters :
4G networks can allow officials to access
destinations under tragic conditions and quickly
provide further safety.

23. Technology 1G 2G 2.5G 3G 4G
First design 1970 1980 1985 1990 2000
Implementation 1982 1991 1999 2002 2010?
Service
Analog
voice,
Synchr
onous
data to
9.6
Kbps.
Digital
voice,
SMS
Packaged
data
Higher
capacity,
broad band
data Up to 2
Mbps.
Higher capacity,
completely IP
oriented,
multimedia, data to
hundreds of
megabits
Data
bandwidth
1.0
Kbps
14.4 Kbps 384 kbps 2 Mbps 100 + Mbps
Multiplexing FDMA TDMA GPRS CDMA WIMAX
GENERATION OVERVIEW

24. CONCLUSION :
• 4G provide with a very efficient and reliable wireless
communication system for seamless roaming over
various network including internet which uses IP
network.
• It will dominate the wireless communications, and its
converged system will replace most conventional wireless
infrastructure.

25. REFERENCES:
1) www.comsoc.org
2) www.techonline.com
3) www.ieee.org
4) Reference books:
Advanced Wireless Communications
By Salvo G. Glacis
Next Generation Wireless Technologies:4G
by Hakima Chouchi

26. Thank You..!