1. Wireless local loop Technologies
-Nishant Rathi
(100870)

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

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

4. Satellite Services –
Iridium
Globalstar
Thuraya
Inmarsat

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

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

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

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

9. 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
CT Cordless Telephone

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

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