Introduction
In recent years, there has been a phenomenal growth in wireless communications technology which is now playing a promising role to meet the ubiquitous user demands. The developments of sophisticated wireless technologies have shaped the lifestyle of common people to a distinctive level. The 21st century has transformed into a turbulent business environment. There has always been a lot of competition among wireless telecommunication companies to cope with ever increasing user-demands in providing them enhanced capacity and data-rate services. Today a significant number of the telecom services providing carriers like Verizon, AT&T, Sprint and T-Mobile and so on attempt to influence buyers that their systems ...