介绍了第三代移动通信系统的特点和网络结构 ,在比较 GSM网络和第三代移动通信系统的基础上 ,详细研究分析了基于 GSM和 CDMA的两种向 3G通信系统演进的方案

The Evolution Solutions of GSM Network to 3rd Generation Mobile Communications System Liu Quan Yang Guangxin Gao LuThis paper gives the characters and network struc ture of 3G mobile communications system. By giving the comparison of GSM and 3G system it also analysis two possible projects which are based on GSM and CDMA fo r the evolution to 3G mobile communications system.rd generation communications system; GSM; T D-SCDMA; IMT2000