|
Propagation of electromagnetic waves inside buildings in the frequency
range above 600 MHz is influenced mainly by the walls (and large
furniture elements). Therefore a detailed vector database of the
buildings is required. For frequencies below 600 MHz empirical
propagation models are recommended in the literature.
(A short presentation
about indoor propagation in the 400 MHz range with ray-optical
propagation models is available to show that it is possible to
use WinProp's models also in this frequency range).
Typically
the multipath propagation is very important in indoor environments.
Simple empirical propagation models are therefore not sufficient.
The indoor propagation models can be used for cellular network planning
(picocells) as well as for LOS analysis.
If the penetration of electromagnetic waves into buildings ("indoor
coverage") must be analyzed or if the radiation from transmitters
inside buildings to the outdoor world is important, the WinProp's
combined network planning approach (CNP) should be used.
|
__
|
Typical
indoor propagation scenario
with
some propagation
paths.
|
|
Phenomena like multi-path propagation, reflection, diffraction and
shadowing have a significant influence on the received power. So the
propagation models should consider these phenomena to obtain accurate
results.
WinProp offers a wide variety of propagation models for indoor
scenarios.
Empirical
Models:
Dominant
Path Prediction Models:
Ray Optical Propagation Models:
More
information about each propagation model is available after clicking on
the corresponding links.
|
