Introduction
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The
transition between urban and indoor propagation models
is very important for
WinProp
offers a very flexible interface to handle the
transition from urban to indoor and vice versa. |
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Principle
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A polygonal cylinder around the walls of the indoor
database is automatically determined which includes all
indoor walls (see figure).
- The material properties of this cylinder can be
defined and are used in the urban propagation models
- Urban propagation models consider only the
cylinder
- Indoor propagation models consider only the
walls inside the cylinder
- The cylinder is transparent for the indoor
models (rays are transmitting the cylinder without
any attenuation) and the cylinder is not considered
(for reflection or diffraction) during the
computation of the indoor prediction
- The cylinder itself represents the interface
between the urban and the indoor models: All rays
reaching the cylinder are passed between the
different propagation models (from urban to indoor
and vice versa). This can be done multiple times
during a propagation run (rays penetrating the
building and leaving it again...)
- Different resolutions can be defined inside and
outside the cylinder
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Schematic figure of the shape. Click to enlarge.

Adaptive resolution guarantees the best resolution for
each environment.
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Databases
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The
urban
databases and
indoor databases of the well-known urban
and indoor propagation models can be used. No special
databases are required.
The only task for the user: Import the indoor building
database (you would use for the indoor propagation
model) with WallMan into the urban building database.
All other tasks are automatically handled by WinProp.
The number of
CNP buildings to be imported into the urban database is
not limited by WinProp. You can add as many CNP
buildings as you want (perhaps only the RAM or hard disk
space might limit the total number..). |

Combined
urban/indoor database.
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Supported
Propagation Models
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The following
propagation models are supported:
Click on the
corresponding links to get more information about the
propagation models. |
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Sample
Predictions
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Some sample
predicitons for the Urban/Indoor Combined Network
Modules are shown below. Please click on the images to
enlarge them.
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Transmitter located on a neighbour
building of the CNP building.
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Transmitter located on a neighbour
building of the CNP building.
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Transmitter is located inside the CNP
building.
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Transmitter located on a neighbour
building of the CNP building.
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