There are pretty substantial differences between AMPS and NMT, GSM and CDMA, EV-DO and EDGE.
CDMA for example was designed to evolve from AMPS (so was D-AMPS or TDMA, which was another 2g technology), so you could put CDMA and Analog carriers in the same site infrastructure. The 'nG' label is virtually meaningless is most discussions. It also leaves out discussion of PHS, and others, which were clearly 2g technologies.
CDMA for example was designed to evolve from AMPS (so was D-AMPS or TDMA, which was another 2g technology), so you could put CDMA and Analog carriers in the same site infrastructure. The 'nG' label is virtually meaningless is most discussions. It also leaves out discussion of PHS, and others, which were clearly 2g technologies.