Comparison between mobile systems?

[muh_j18]

what are the main differences between the 2nd generation (GSM) system and the 4th generation, in terms of:
-the type of modulation used.
-multiplexing with the base station.
-bit rate and bandwidth given for each supscriber.
- the complexity of the system.

if you could provide links for helpful websites that'd be great.
thanks in advance.

 

[muh_j18]

sorry, may be i have asked in the wrong place.

 

[berkeman]

what are the main differences between the 2nd generation (GSM) system and the 4th generation, in terms of:
-the type of modulation used.
-multiplexing with the base station.
-bit rate and bandwidth given for each supscriber.
- the complexity of the system.

if you could provide links for helpful websites that'd be great.
thanks in advance.

The EE forum is the logical place to ask this, but I don't know the answer. What online resources have you checked in looking for the answers? I'm sure wikipedia covers at least some of your questions.