WiMAX is a standards-based technology enabling the delivery of “last mile” wireless broadband access as an option to wired broadband like cable and DSL. WiMAX provides fixed, nomadic, portable and, soon, mobile wireless broadband connectivity without the need for direct “line-of-sight” with a base station. In a typical cell radius deployment of three to ten kilometers, WiMAX Forum Certified? systems can be expected to deliver capacity of up to 40 Mbps per channel, for fixed and portable access applications.

WiMAX technology is expected that it will be incorporated in notebook computers and PDAs by 2007, allowing for urban areas and cities to become “metro zones” for portable outdoor broadband wireless access.　(From Wikipedia)