WIMAX 2 is the short form of Worldwide Interoperability for Microwave Access, while 2 refers to the revised version which has been installed in many countries. The purpose of this wireless network is to provide communications and network reach to places further than what is possible with Wi-Fi.
While the Wi-Fi provides you access only for a distance of about 100ft from your receiving device, WIMAX can cover entire urban areas and at times some of the system can even go international. While Wi-Fi is also an interoperable implementation endorsed by IEEE 802.11, WIMAX belongs to IEE 802.16 family. IEEE refers to the Institute of Eletcrical and Electronic Engineers, the organization that has devised this tool of broadcasting.
Many countries felt that WIMAX was itself enough to carry the broadband signal to greater distances, as it could also reach longer distances that what Wi-Fi could, covering entire cities from your home or even distances beyond a country's borders. WIMAX 2 has been selectively deployed in various places.
WIMAX functions on the same ground as Wi-Fi, sending data, through radio signals, from one computing machine to a receiving instrument equipped with WIMAX receivers. Data is transmitted at a maximum of 54 megabits/second with Wi-Fi IEEE 802.11g, WIMAX can handle up to about 70 megabits/second which is also shared between several users, providing an equivalent of modem transmission rate for each user.
WIMAX 2's reach passes Wi-Fi's by many miles, the reach of Wi-Fi is only about 100 feet, a blanket spread of a minimum of 30 miles spread is what WIMAX is capable of. This reach has been made possible by powerful transmitters using different frequencies. Though there is potential of this reach, there is a possibility in cities the distance covered being reduced by the obstructions caused by high rise buildings and other hurdles.