Over the past few years, many fundamental changes have taken place in wireless communications that will influence the future of this dynamic field. One phenomenon driving these changes has been the integration of wireless communicationdevices in people’s lives. While the 1990s were the years when wireless voice telephony became popular, the 2000s should be the time when wireless data applications are truly un-tethered from homes and offices. As more people adopt wireless communication devices and applications effected by these devices, the demand on wireless networks will continue to grow | Brought to You by Like the book Buy it mobile communications series Samuel C. Yang ES1CDMA2DD0 WIRELESS SYSTEM ENGINEERING 3G CDMA2000 Wireless System .