Provided by: Iosrjournals
Date Added: Feb 2014
New and increasingly advanced data services are driving up wireless traffic, which is being further boosted by growth in voice applications in advanced market segments as the migration from fixed to mobile voice continues. Meanwhile, difficult market conditions have caused a number of operators to delay making substantial investments in upgrading their networks to higher capacity technology. While many service providers and operators may be somewhat familiar with the previously mentioned 2.5G services, they are now hearing about newer 3G technologies such as UMTS and HSDPA, and other technologies such as WiMAX (IEEE 802.16e), which offer substantial improvements in data rate and spectral efficiency.