In recent years, the communication field has experienced an elevated era in technology. Since we have ushered in the 21st century, so with time the technology is also getting more and more advanced. The latest advancement being the “4g” viz the 4th generation communication technology.
In the history of mobile phones we come across 4 different eccentrics viz 0G, 0.5G, 1G, 2G, 2.5G, 3G and the latest being 4G which is also sometimes referred as super 3G.
OG: This generation experienced the development of two way radio telephones. Which was successfully tested by soviet engineers G.Shapiro and I.Zaharchenko in 1964, and mounted it inside a car, train and airplanes? This was the device which could connect to local telephone network within a range of 20kms.
0.5G: This was a little upgraded from 0G by introducing ARP, the first public commercial mobile phone network which overcame the limited coverage area drawback.
1G: This generation introduced the wireless technology, mobile technology. It used analog type of radio signals for the transmission of voice. The voice signal transmitted was modulated to higher frequency of 150MHz and above.
2G, 2.5G, and 2.75G: In 19th century second generation was introduced. Which bought GSM, IS-136 and IS-95? Out of which IS-136 use TDMA (time division multiple access) and IS-95 uses CDMA (code division multiple access. 2G introduced wireless transmission via digital signals using circuit switched technique. It bought new variant in telecommunication by introducing SMS (short message service) and multimedia access on the mobile phones.
3G: 2G is widely used worldwide now. But due its limited data rates it’s difficult to use applications like video conferencing, video and music download. Thus, to overcome these drawbacks 3G came into existence which has wider bandwidth and high data rate of about 2Mbps by using packet switching mode of transmission.
The first commercial launch of 3G was on October 1,2001, by NTT DoCoMo. They used WCDMA technology which is better than CDMA. This generation encourages video telephony using EDGE which is the latest GSM technology which supports high rate multimedia. We also have an advanced 3G mobile telephony protocol HSDPA (high speed downlink packet access) which allows data transfer at high speeds.
4G: This is the future generation of telecom industry. Which is fastest and more efficient than 3G? 4G will provide data rate of 100 Mbps for high mobility and 1Gbps for low mobility.
And you never know there is a high possibility of 4G coming to India before 3G.