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Wi max introduction
- 1. WiMAX Introduction Worldwide Interoperability for Microwave Access The Institute of Electrical and Electronics Engineers (IEEE) 802 committee (802.16 ). Orthogonal Frequency Division Multiplexing (OFDM) (carriers of width of 5MHz or greater can be used ) connectivity at speeds up to 70 Mbps provide high speed access to about 60 businesses at T1 speeds. can serve up to a thousand homes in term of DSL speed.
- 2. How it works?? WiMAX system consists of two parts: WiMAX Base Station: Typically, a base station can cover up to 10 km radius. WiMAX receiver: could be a stand-alone box or a PC card. Several base stations can be connected with one another by backhaul microwave links. wireline backhauling microwave Point-to-Point connection what would happen if you got WiMAX ?? Internet service provider WiMAX base station 10 miles from your home WiMAX-enabled computer receive a special encryption code base station beam data from the Internet to your computer
- 3. WiMax vs. WLAN WiMAX provides a media access control (MAC) layer. the support of real-time and voice applications is simple WiMAX proposes the full range of security Terminal authentication by exchanging certificates to prevent rogue devices User authentication using the Extensible Authentication Protocol (EAP) Data encryption using the Data Encryption Standard (DES) or Advanced Encryption Standard (AES) , both much more secure than the Wireless Equivalent Privacy (WEP) used by WLAN
- 4. WiMax VS. WiFi WiFi connection can transmit up to 54Mbps (under optimal conditions) WiMAX should be able to handle up to 70Mbps The biggest difference isn't speed!! WiFi's range is about 100 feet (30 m) WiMAX will blanket a radius of 30 miles (50 km) with wireless access due to the frequencies used and the power of the transmitter. WiMAX(10-66 GHz frequency) WiFi(5GHz frequency maximum)
- 5. Where can be applied?? large area public (airports, university campuses,…) Large numbers of small and medium sized businesses (for lower costs) High speed internet for areas where wired connectivity is not viable.