Architecture study of 3G and UMTS
IBM just released an article called "The speed demon: 3G telecommunications" that takes a look at some of the technical details of the transition from 2G to 3G wireless. Instead of being just hype, the author looks at a high-level architecture study of 3G or UMTS (Universal Mobile Telecommunication System) and compares it to 2G and 2.5G. Great technical article for anyone wanted to understand what's going on.