Introduction
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There are
several empirical indoor propagation modells offered by
WinProp. All of the following empirical models consider
only one propagation path in the vertical plane between
transmitter and receiver. Therefore the prediction is
very fast, but with limited accuracy in contrast to
WinProp's ray optical models, like the
3D Intelligent Ray Tracing
or the Indoor Dominant Path
Model. |
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One Slope
Model
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The One Slope
Model is very fast, because the only parameter which is
considered in the computation is the path loss exponent.
With the path loss exponent, the model is calibrated for
each scenario. Wall and other elements in the building
database are not considered by the One Slope Model. |
Prediction
with the One Slope Model.
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Motley
Keenan Model
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The Motley
Keenan Model considers all walls in the vertical plane
between transmitter and receiver. The attenuations of
the walls are the same for each wall. |
Prediction
with the Motley Keenan Model.
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COST 231
Multi-Wall Model
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The COST 231
Model is the most sophisticated empirical model. All
walls in the vertical plane between transmitter and
receiver are considered and for each wall individual
materaial properties are taken into account.
As
predictions with the COST 231 models are often a little
bit pessimistic, an extension was added to the model:
With increasing number of penetrated walls, the
attenuations of walls are decreased. With this
extension, the COST 231 model achieves good results with
very few compuation effort. |
Prediction
with the COST 231 Model.
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