Long journey from 1G to 3G

1970, the use of communication technology microprosesor to be started. Then in 1971, opened the first mobile phone network in Finland called ARP. And then NMT in Scandinavia in 1981 and AMPS in 1983. The use of analogue technology in the first generation that has many limitations in terms of traffic capacity of the small number of customers who can ditampung in a few cells, and the use of frequency spectrum which is very boros.Teknologi 1G can only serve the voice communication. Analogue mobile phone network that was first used internationally in Europe or North is NMT Nordic Mobile Telephone, which operates at a frequency of 450 MHz (NMT-450), there are also NMT-900 (operating at a frequency of 900 MHz).
Because the market demands and the need for a better quality of the technology generation was born to two or 2G. This generation is using digital technology. Technology is the 2G IS-95 CDMA, IS-136 TDMA and PDC. This second generation than for voice communication, but also can be used for SMS and data transfer with a maximum speed of 9600 bps (bits per second). As a comparison, the modem used for Internet connection speed 56.000 bps (5.6 kbps). The advantages compared to 2G than 1G better service, in terms of capacity is also greater. Because in the 2G, the frequency can be used with multiple customers using the mechanism Time Division Multiple Access (TDMA).
Standard 2G technology is the most widely used is GSM (Global System for Mobile Communication), such as that used most of the mobile phone at this time. GSM operates at a frequency of 900, 1800 and 1900 MHz. GSM also supports a data communication speed 14.4 kbps.
After 2G, born generation 2.5 G which is a better version of the second generation, and have the ability to transfer data more quickly. The famous of this generation is GPRS (General Packet Radio Service) and EDGE.
Latest trends in mobile communication start switch to the next generation of the Predicted will be the mobile communication technology that promise. 3 generation or 3G technology is the latest in the world of mobile. This generation is known as UMTS (Universal Mobile Telecommunication System) or WCDMA (Wideband - Coded Division Multiple Access). Excess generation of this lies in the data transfer speeds reaching 384 kbps to 2 Mbps and an external for indoor, which can provide multimedia services such as internet, video streaming, video telephone, and others better.


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