WiMAX stands for World-wide interoperability of Microwave Access. Along with the development of mobile communication and broadband technology, WiMax has become a hot spot for global telecom operators and manufacturers. WiMAX promises to deliver the Internet throughout the globe, and connect the \"Last mile\" of broadband wireless connectivity services. WiMAX will offer broadband wireless access at data rates of multiple Mbit/s to the end-user and within a range of several kilometers. The same radio technology will also offer highspeed data services to all nomadic terminals (laptops, PDAs, etc.) with an optimized tradeoff between throughput and coverage.