Generation Networks

1G: First Generation Networks

The rst mobile phone system in the market was AMPS. It was the rst U.S. cellular
telephone system, deployed in Chicago in 1983. The main technology of this rst
generation mobile system was FDMA/FDD and analog FM.

2G: Second Generation Networks

Digital modulation formats were introduced in this generation with the main technology
as TDMA/FDD and CDMA/FDD. The 2G systems introduced three popular
TDMA standards and one popular CDMA standard in the market. These are as