WinProp is a complete suite of tools in the domain of wireless propagation and radio network planning. With applications
ranging from satellite to terrestrial, from rural via urban to indoor radio links, WinProp’s innovative wave propagation models combine accuracy with short computation time.
View the typical workflows when working with propagation simulations in specific scenarios, how to add a network planning
to a propagation simulation, include a receiver pattern, set up a time-variant scenario, include multiple-input multiple-output
(MIMO) at both the base station and the mobile station, connectivity analysis of sensor networks and optimization.
Use AMan to generate, edit and analyze a single antenna. Superimpose multiple antennas radiating similar signals to determine
the actual antenna pattern while taking into consideration the local environment.
WinProp includes empirical and semi-empirical models (calibration with measurements possible), rigorous 3D ray-tracing models
as well as the unique dominant path model (DPM).
In WinProp various air interfaces and applications are pre-defined: broadcasting, cellular, wireless access, WiFi, sensor networks,
ICNIRP and EM compliance.
Calculate propagation in a hilly terrain using the empirical two-ray model (ETR).
Model Type
In this rural/suburban scenario, the geometry is described by topography (elevation)
and clutter/morpho (land usage). In the tree view, click
Topography to view the topography database or
Clutter/Morpho to view the land usage.
Sites and Antennas
The topography contains two sites: Site 1 has two directional antennas at the height
of 25 m, and Site 2 has an omnidirectional antenna at a height of 50 m. Each antenna
operates at a single carrier frequency of 2000 MHz.
Tip: Click Project > Edit Project Parameter and click the Sites tab to view the sites
and antennas.
Computational Method
The empirical two-ray model (ETR) model computes the path loss to each
pixel based on the assumption that the direct ray and the ground-reflected ray
exist. There is no check if the rays exist or if they are shadowed, whereas in the
deterministic two ray model, rays are only considered if
they are not shadowed.
Knowing that the empirical two-ray model would be too optimistic
in shadow regions, a line-of-sight check is performed, and the two-ray model is
extended with knife-edge diffraction to handle such regions accurately.
Tip: Click Project > Edit Project Parameter and click the Computation tab to change
the model.
Results
Results are computed for each transmitter on a prediction plane of 1.5 m. Propagation
results include power coverage of each transmitting antenna, field strength, path
loss, and line-of-sight results for both sites. Figure 3 shows an example of
power coverage for Site 2 Antenna 1. The large dynamic range is obtained by the
addition of knife-edge diffraction for shadow regions. The knife-edge diffraction
ensures realistic results where no direct line of sight exists.