06-02-2012, 01:40 PM
3G WIRELESS TECHNOLOGY:-
1G WIRELESS TECHNOLOGY:-
It is the 1st generation wireless technology.
It uses FDMA[Frequency Division Multiple Access] to transmit data.
Its frequency is 150MHz
It uses analog signal.
It has a poor voice quality.
2G WIRELESS TECHNOLOGY:-
It is the 2nd generation wireless technology.
It uses TDMA[Time Divison Multiple Access] standards.
It also known as GSM[ Global standard for mobile communication].
Its frequency is 450MHz.
It has an additional feature that ‘SMS’.
Its negative point is no data transmission.
Bridge generation between 2g and 3g:-
2.5G wireless technology is known as a stepping stone that bridge 2G to 3G wireless technology.
It includes a service that is known as GPRS(Global Packet Radio Service).
It includes additional features that web browsing, send/receive e- mail, camera phones, voice mail.
Its speed is 64-144kbps.
3G WIRELESS TECHNOLOGY:-
It is third generation mobile technology.
To meet growing demand of network capacity, rates required for high speed data transfer and multimedia application,3G started evolving.
3G technologies enable network operators to offer users a wide range of more advanced service.
This service includes wide area voice telephony, video calls and broad band wireless data, all in a mobile environment.
COMPARISON BETWEEN 2G ,2.5g AND 3G:-
Difference in bandwidth
Difference in data transmission
Difference in features
Difference in use of standards
Difference in mobiles
CONCLUSION:-
Opinions on 3G service might be differ.
3G open a door to variety mobile application.
Due to multifeatures,its demand is increased day to day.
It is otherwise known as UMTS(Universal Mobile Telecommunications System).
