This document summarizes the evolution of cellular communication technologies from 1G to 4G. It describes the key features and limitations of each generation of technology: 1G introduced analog cellular but had poor voice quality and battery life; 2G digitalized cellular using GSM but had limited data speeds and required strong signals; 2.5G introduced GPRS and enabled basic data services; 3G increased speeds to 2Mbps, allowing video calls and mobile TV; 4G provides speeds from 100Mbps to 1Gbps for services like streaming media and supports at least 200 active users per cell. Long term evolution (LTE) is the 4G standard used by most networks globally.

1. 1G 2G 3G and 4G TECHNOLOGY
SUBMITTED BY
KARTHIK

2. Cellular communication systems
First Generation (1G)
Second Generation (2G)
2.5 Communication Systems
Third Generation (3G) communication systems
Fourth Generation (4G) systems

3. 1G TECHNOLOGY
 1G refers to the first generation of wireless telephone technology,
mobile telecommunications which was first introduced in 1980s
and completed in early 1990s.
 It's Speed was upto 2.4kbps.
 1G network use Analog Signal.
 AMPS was first launched in USA in 1G mobile systems.

4. DRAWBACKS OF 1G
 Poor Voice Quality
 Poor Battery Life
 Large Phone Size
 No Security
 Limited Capacity

5. 2G TECHNOLOGY
 2G technology refers to the 2nd generation which is based on
GSM.
 It was launched in Finland in the year 1991.
 2G network use digital signals.
 It’s data speed was upto 64kbps
 Supports voice as well as data.

6. DRAWBACKS OF 2G
 2G requires strong digital signals to help mobile phones work. If
there is no network coverage in any specific area , digital signals
would weak.
 These systems are unable to handle complex data such as Videos

7. 2.5G TECHNOLOGY
 2.5G is a technology between the second (2G) and third (3G) generation of mobile telephony.
 2.5G is General Packet Radio Service (GPRS), which is evolution from GSM.
Features Includes:
 Phone Calls
 Send/Receive E-mail Messages
 Web Browsing
 Speed : 64-144 kbps
 Camera Phones
 Take a time of 6-9 mins. to download a 3 mins. Mp3 song

8. 3G TECHNOLOGY
 3G technology refer to third generation which was introduced in
year 2000s.
 Data Transmission speed increased from 144kbps- 2Mbps.
Features
 Providing Faster Communication
 Send/Receive Large Email Messages
 High Speed Web / More Security

9. Conti…
 Video Conferencing / 3D Gaming
 TV Streaming/ Mobile TV/ Phone Calls
 Large Capacities and Broadband Capabilities
 11 sec – 1.5 min. time to download a 3 min Mp3 song

10. 4G TECHNOLOGY (Anytime ,Anywhere)
 4G technology refer to or short name of fourth Generation which was
started from late 2000s.
 Capable of providing 100Mbps – 1Gbps speed.
Features Include:
 More Security
 High Speed
 High Capacity
 Low Cost Per-bit etc.

11. Long term evolution (LTE)
 LTE is a standard for wireless communication of high-speed data
for mobile phones and data terminals.
 Supports at least 200 active data clients in every 5 MHz cell.
 It is based on the GSM/EDGE and UMTS/HSPA network
technologies.
 It can deliver services such as Mobile TV , video streaming, music
downloading

12. Thank you !