PMP 450 Planning Guide
Figure 1 Line Of Sight Diagram
Whereas multi-pathing degrades a link in some technologies (FSK, for example), OFDM can often use multi-
pathing to an advantage to overcome nLOS, especially in cases where the Fresnel zone is only partially blocked by
buildings, “urban canyons”, or foliage. OFDM tends to help especially when obstacles are near the middle of the
link, and less so when the obstacles are very near the SM or AP.
However, attenuation through walls and trees is substantial for any use of the 2.4/3.5/5.4/5.8 GHz frequency bands.
Even with OFDM, these products should not be expected to penetrate walls or extensive trees and foliage.
Typical deployment
The PMP 450 Series consists of Access Point Modules and Subscriber Modules. The radio link operates on a single
frequency channel in each direction using Time Division Duplex (TDD).
Applications for the PMP 450 Series include:
•
High throughput enterprise applications
•
nLOS video surveillance in metro areas
•
Urban area network extension
•
Network extension into areas with foliage
Greenfield deployment
The PMP 450 Series equipment may be deployed as a standalone network deployment offering a high-speed access
network.
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pmp-0047 (March 2014)
Summary of Contents for PMP 450
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