1) 1G cellular networks from 1980s used analog FM signals for voice calls only at speeds up to 2.4 kbps. 2) 2G digital networks from 1991 included GSM and supported text/picture messages at speeds up to 64 kbps. 3) 3G introduced in 2000s enabled multimedia and mobile internet using IMT-2000 standards at speeds from 144 kbps to 2 Mbps. 4) 4G starting in 2010s provides LTE for voice, data and streaming at speeds from 50-100 Mbps for anytime, anywhere use.

1. Prepared by:-
Eng Sho’ayb Mohammed
Email:-
supercadde6@gmail.com

3. First Generation 1G
 The First generation of wireless
telecommunication technology is known as 1G
was introduced in 1980. The main difference
between then existing systems and 1G was
invent of cellular technology and hence it is also
known as First generation of analog cellular
telephone
 Frequency division duplex (FDD) scheme
 all countries should use the same standard and
the
same frequency bands

4.  All the 1G cellular systems were using analog
frequency modulation (FM).
 The transmission power requirement depends
on:-
 the transmission bandwidth.
 the coverage and size of the radios

5. Main Points
1G was Mobile Communication Introduced
in 1980s and completed in early 1990s
AMPS was first launched in 1G mobile
system
1G Network use Analog signal
Its speed up to 2.4kbps

7. Second Generation 2G
• Second generation wireless telephony
technology (2G) refers to telecom network
technologies that were launched on the Global
System for Mobile Communications (GSM)
standard in 1991 by Radiolinja in Finland
• The 2G systems supported a complete set of
standards for all four sectors of the wireless
network industry.

8. 2G enables services such text and picture
messages and multi media messages
(MMS)
It provides better quality and capacity
The 2G based on GSM
2G Network use Digital signals
Its Data speed was up to 64kbps

10. Third Generation 3G
• The Third Generation 3G is a wireless Mobile
Telecommunications Technology. That based
on a set of standards used for Mobile -
Devices and Mobile -Telecommunications
use services and Networks that comply with
the International Mobile Telecommunications-
2000 (IMT-2000) specifications by
the International Telecommunication Union.
• 3G finds application in wireless voice
telephony, Mobile Internet access, fixed
wireless Internet access, video calls and
mobile TV.

11.  3G was introduced in 2000s
 International Mobile Telecom (IMT-2000)
Key features of IMT-2000 includes:-
• High quality;
• Small terminal for worldwide use;
• Worldwide roaming capability;
• Capability for multimedia applications, and a wide
range of services and terminals.
Data transmission speed increased from
144kbps-2Mbps

12. Typically called Smart Phones and features
increased its bandwidth and data transfer rates
to accommodate web-base applications, Audio
and Video files
Providing Faster Communication
Send/Receive Large Email Messages

14. Fourth Generation 4G
• Fourth generation wireless (4G) is an
abbreviation for the fourth generation of cellular
wireless standards and replaces the third
generation of broadband mobile
communications.
• The standards for 4G, set by the radio sector of
the International Telecommunication Union (ITU-
R), are denoted as International Mobile
Telecommunications Advanced (IMT-Advanced).

15. A 4G provides an end-to-end IP solution where
Voice, Date, and streamed Multimedia can be
served on an “Any-Time, Any-Where” basis at
higher data rates than previous Generations
4G based on LTE
Speed data rates from 50-100Mbps
Wider bandwidth
High security
end-to-end quality service

16. Combination of Generations