PDA

View Full Version : WiMaX LOS & NLOS By SR TELECOM



echomoon
2011-11-09, 04:29 PM
WiMAX Technology
LOS and NLOS Environments

While many technologies currently available for fixed broadband wireless can only
provide line of sight (LOS) coverage, the technology behind WiMAX has been
optimized to provide excellent non line of sight (NLOS) coverage. WiMAX’s
advanced technology provides the best of both worlds – large coverage distances
of up to 50 kilometers under LOS conditions and typical cell radii of up to 5
miles/8 km under NLOS conditions.



Pages:19

Table of contents:
1. Abstract ...................................................................................................... 4
2. NLOS versus LOS Propagation .............................................................. 4
3. NLOS Technology Solutions..................................................................... 7
3.1 OFDM Technology................................................................................... 7
3.2 Sub Channelization.................................................................................. 8
3.3 Antennas for Fixed Wireless Applications........................................... 9
3.4 Transmit and Receive Diversity ......................................................... 10
3.5. Adaptive Modulation............................................................................ 10
3.6. Error Correction Techniques.............................................................. 11
3.7. Power Control ....................................................................................... 11
4. NLOS Propagation Models .................................................................... 12
4.1. NLOS Models................................................................................... .....12
4.2. SUI Models........................................................................................... 12
4.3. Probability of Coverage Prediction.................................................... 13
5. WiMAX Coverage Range........................................................................ 14
6. Summary.................................................................................................. 16
7. Acronym Glossary................................................................................... 17
8. References................................................................................................ 18

no pass

reputation+thanx will be nice;)

br