Within SignalPro we have several different ways to apply excess clutter pathloss. To include a clutter loss option, you will need to be sure to “switch on” the appropriate option from within the propagation model menu. You can get to the propagation model menu by going to Studies>Propagation models. See dialogue box below:
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The Add Clutter Loss option applies a fixed amount of additional pathloss based on the clutter type at the UE/mobile unit only (this does not look at clutter along the path). The 'Loss from clutter at receiver' table within the attenuation file adjusts the loss taken into account at the mobile unit, but only if the 'Add Clutter Loss' option is checked. This is generally used for situations where the Transmitter sites are elevated above the clutter , but the mobile/remote unit is down within the clutter and you expect most clutter-based loss is local to the mobile.
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The 'Add clutter height to terrain height' option will treat the clutter as a solid obstacle to be diffracted over; excess pathloss is based on the diffraction angle as the path goes over the top of the clutter. The heights of the clutter are set in the attenuation file (assuming that you're not using a .CHT clutter height file instead). This is most often used for back-haul planning or situations where you want to treat clutter as pessimistically as possible. If the mobile unit is below the height of the clutter, this model tends to be very conservative and is not appropriate for most mobile planning.
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Path profile with Add pass-through clutter loss switched on. As you can see, the clutter heights are taken into effect. However, the path will pass-though the clutter and take the pass-through loss into account as explained above:
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