wi fi and wimax

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introduction, advatages ,limitations............

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Presentation Transcript

Wi-Fi:

W i-Fi

PowerPoint Presentation:

BASIL K GEORGE

WIFI:

W IFI Wi-Fi Network connect computers to each other, to the internet and to the wired network . Wireless Technology is an alternative to Wired Technology, which is commonly used, for connecting devices in wireless mode. The term Wi-Fi, first used commercially in August 1999. Wifi , is a mechanism that allows electronic devices to exchange data wirelessly over a computer network Wi-Fi (Wireless Fidelity) is a generic term that refers to the IEEE 802.11 communications standard for Wireless Local Area Networks (WLANs

Wi-Fi Standards:

W i-Fi Standards

Wi-Fi APPLICATIONS :

W i-Fi APPLICATIONS Home Small Businesses Large Corporations & Campuses Health Care Travellers

ADVANTAGES :

A DVANTAGES Mobility Easy of Installation Good Flexibility Cost Reliability Security Use unlicensed part of the radio spectrum Roaming Speed is high.

LIMITATIONS :

L IMITATIONS Interference Degradation in performance High power consumption Limited range

Wi-Fi CONFIGURATIONS :

W i-Fi CONFIGURATIONS

WIMAX:

W IMAX WiMAX (Worldwide Interoperability for Microwave Access) is a communication technology for wirelessly delivering high-speed Internet service to large geographical areas. It is a part of a “fourth generation,” or 4G, of wireless-communication technology. The name " WiMAX " was created by the WiMAX Forum, which was formed in June 2001 to promote conformity and interoperability of the standard.

PowerPoint Presentation:

Wi-Fi hotspot. Soon, Mobile WiMAX will blanket large areas—metropolitan, suburban, or rural—delivering mobile broadband Internet access at speeds similar to existing broadband.

WIMAX STANDARDS:

W IMAX STANDARDS 802.16 802.16a 802.16-2004 802.16e-2005 Date Completed December 2001 January 2003 June 2004 December 2005 Spectrum 10-66 GHz < 11 GHz < 11 GHz < 6 GHz Operation LOS Non-LOS Non-LOS Non-LOS and Mobile Bit Rate 32-134 Mbps Up to 75 Mbps Up to 75 Mbps Up to 15 Mbps Cell Radius 1-3 miles 3-5 miles 3-5 miles 1-3 miles

The WiMAX base station is mounted on a tower or tall building to broadcast the wireless signal :

The WiMAX base station is mounted on a tower or tall building to broadcast the wireless signal

RELATION OF WI-FI AND WIMAX:

R ELATION OF W I-FI AND W IMAX WiMax eliminates the constraints of Wi-Fi. Unlike Wi-Fi, WiMax is intended to work outdoors over long distances. WiMax is a more complex technology and has to handle issues of importance such as QoS guarantees, carrier-class reliability, NLOS. WiMax is not intended to replace Wi-Fi. Instead, the two technologies complement each other.

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