The explosive growth of the Internet from last few years has led to an increasing demand of high speed, everywhere Internet access. Broadband Wireless technologies are increasingly gaining popularity by the successful global deployment of the some technology like as Wireless Personal Area Networks (Bluetooth-IEEE 802.15.1), Wireless Local Area Networks (Wi-Fi-IEEE 802.11n), and Wireless Metropolitan Area Networks (WiMAX IEEE 802.16). WiMAX (Worldwide Interoperability for Microwave Access)/ IEEE 802.16 is a very promising and latest 4G technology. WiMAX is now in the testing via implementation stage at various locations like Taiwan, India. The main target of these technologies provides low-cost, high-performance Wireless access to residential and business applications. As technology evolves to address portable and mobile applications, the required features and performance of the system will increase.