Prepared By: MUHAMMAD HAMZA KHAN

0G (Zero Generation Technology) At the end of the 1940’s, the first radio telephone service

was introduced.

A system launched by Bell Systems, called, Improved Mobile Telephone Service (IMTS), brought quite a few improvements such as direct dialing and more bandwidth.

The very first analog systems were based upon IMTS and were created in the late 60s and early 70s.

1G (1st Generation Technology) It refers to the wireless telephone technology which was

developed in 1970’s.

1G had three major improvements: The invention of the microprocessor. The digital transform of the control link between the

phone and the cell site. Analog signal

2G (2nd Generation Technology) Better quality & capacity - More people could use there phones at

the same time.

Digital Signals – consist of 0’s & 1’s.

It has four levels: 1.Low level 2.High level 3.Rising edge 4.Falling edge

2G (Cont…)

It allows digital error checking: increase sound quality lowers the noise level

Cell towers had a limited coverage area

Power–CODEC introduction -program that encodes and decodes digital data stream or signal Translates data from digital to analog and vice versa

3G (3rd Generation Technology) It has large capacity and broadband capabilities.

It allows the transmission of 384kbps for mobile systems and up to 2Mbps.

Fastest communication services which includes: Voice Fax Internet with seamless global roaming.

Usage of 3G technology:

For Customer:Video steaming, TV broadcastVideo calls, video clips – News, Music , SportsEnhanced gaming, Chat, Location services

For Business: High speed teleworking Video conferencing Real time financial information

3G (Cont…)

4G (4th Generation Technology) 4G Networks are projected to provide speed of 100Mbps

while moving and 1Gbps while stationary.

It has following features:

Faster and more reliable 100 Mb/s Lower cost than previous generations Multi-standard wireless system Bluetooth, Wired, Wireless Ad Hoc Networking Most information is proprietary

Not necessarily connected to internet

4G will create hybrid wireless networks using Ad Hoc networks