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wimax
The document presents information on WiMAX (Worldwide Interoperability for Microwave Access). It defines WiMAX as a wireless technology that provides broadband connections over long distances, in accordance with the IEEE 802.16 standard. WiMAX uses towers to broadcast a signal that can cover up to 50 km, allowing users to access the Internet wirelessly. It offers benefits over wired broadband like lower costs and broader coverage for rural areas. While it has advantages over 3G like higher throughput, it also has disadvantages such as higher costs and signal degradation in bad weather.
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- 2. What is WIMAX? WIMAX stands for Worldwide Interoperability for Microwave Access WiMAX refers to broadband wireless networks that are based on the IEEE 802.16 standard, which ensures compatibility and interoperability between broadband wireless access equipment WiMAX, which will have a range of up to 31 miles, is primarily aimed at making broadband network access widely available without the expense of stringing wires (as in cable-access broadband) or the distance limitations of Digital Subscriber Line.
- 3. NEW TECHNOLOGY Broadbandaccess is too expensive and WiFi coverage is very sparse. The new technology promises ◦ High speed of broadband service ◦ Wireless rather than wired access ◦ Broad Coverage
- 4. 1) A WiMAXtower, similar in concept to a cell-phone tower - A single WiMAX tower can provide coverage to a very large area as big as 3,000 square miles (~8,000 square km). 2) A WiMAX receiver - The receiver and antenna could be a small box or Personal Computer Memory card, or they could be built into a laptop the way WiFi access is today A WIMAX system consists of
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- 7. WIMAX CHIPS WiMAX Mini-PCIReference Design Intel’s first WIMAX chip
- 8. FEATURES OF WIMAX Scalability Quality of Service Range Coverage
- 9. RANGE Optimized forup to 50 Km Designed to handle many users spread out over kilometres Designed to tolerate greater multi-path delay spread (signal reflections) up to 10.0μ seconds.
- 10. BENEFITS OF WIMAX Speed ◦ Faster than broadband service Wireless ◦ Not having to lay cables reduces cost ◦ Easier to extend to suburban and rural areas Broad Coverage ◦ Much wider coverage than WiFi hotspots
- 11. Advantages of WiMaxover 3G Using an assortment of proprietary and standards-based technologies, such as OFDM and W-CDMA ,WIMAX has a clear advantage over 3G. The advantages include ◦ Higher Throughput ◦ Low Cost ◦ Lower Latency
- 12. Disadvantages of WIMAX Spectral limitation High cost-both for installation and operation Weather conditions like rain can have a big impact on the service Line-of-sight is needed for longer distances It has a big power consumption
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- 14. FUTURE WiMax willbe deployed in three stages ◦ In the first phase WiMaX technology (based on IEEE 802.16-2004) provides fixed wireless connections ◦ In the second phase WiMaX will be available as a cheap and self-installing Subscriber Terminal (ST), linked to PC and to antenna ◦ The third phase enables portability, thus WiMAX (based on IEEE 802.16e) will be integrated into commercial laptops
- 15. Conclusion: Will WIMAXreplace 3G? ◦ Along with the forthcoming standardization, WiMAX has the potential to substitute 3G and become a promising 4G ◦ WiMAX has its distinct identity as either a stand- alone solution for incumbent and competitive fixed network operators or as complementary radio access solution for established 2G and 3G cellular network operators.
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