期刊名称：Faculty of Computer Science and Information Technology
出版年度：2007
卷号：0
期号：0
语种：English
出版社：Faculty of Computer Science and Information Technology
摘要：Theworld knows two digital mobile category, they are GSMand CDMA. From their populations, GSM is more supe-rior than the CDMA because it is used more early in 1990s,and implementing open standards that can be developed byanyone. CdmaOne (IS-95) in common use from 1995 andbegin to well-known when the subsequent version was devel-oped, CDMA2000 in October 2000. The presence of mobilephones based on CDMA technology is causing problems onthe GSM-based cellular operator. Because, when almostall GSM operators started to activate the data transmis-sion GPRS service that puts the "always connected" to thenetwork and the capability to send data, voice and imagesand of course the connection to the Internet, proved thatthe presence of CDMA become more familiar and even nowwith the growing number of customers, CDMA2000 datatransmission up to 153 Kbps and of course these servicespromising a cheaper rate.
