Wireless local loop Technologies

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Presentation transcript:

Wireless local loop Technologies -Nishant Rathi (100870)

Technologies Satellite – Based System. Cellular – Based System. Microcellular – Based System. Fixed Wireless Access.

Satellite Based System Used in rural communities and isolated area. Very Expensive. Used on C – band and Ku – band. Terrestrial Telephony.

Satellite Services – Iridium Globalstar Thuraya Inmarsat

Limitation of satellite Communication Signal Latency Rain Fade Line of sight Fresnel Zone

Cellular Based System Distributed over land areas . Portable. Hexagonal shape. Frequency : 800 – 900 MHz, 1.8 – 1.9 GHz.

Popular CBS Networks AMPS – Advanced Mobile Phone Service GSM – Global System for Mobile Communications DAMPS - Digital AMPS CDMA – Code Division Multiple Access

Advantages of CBS Reduced power use. Larger coverage area. Reduced interference from other signals. Avoid line-of-sight signal loss .

Microcellular Based System More base station. Covering a limited area. Range is less than two kilometers. Low tier technologies : DECT – Digital European Cordless Telephone PACS – Personal Access Communications System PHS - Personal Handy Phone System CT2 - Cordless Telephone

FIXED WIRELESS ACCESS SYSTEM Connect with radio. Provide multiple services. Zonal area. Provide end-end connection.

Advantages of FWA Direct Connections High speed and high capacity networks High flexibility High network scalability