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Posts posted by reinerh

  1. Hello Balaji,


    a short introduction how to use components is given in the ProMan user manual chapter 6.1.7.

    Generally we recommend to place the TRX (better use TRX instead of Tx & Rx) and the antennas first.

    Then place the splitters in the next step.

    And finally connect all the components using cables.


    The TRX have one input and one output port, you need to select the output por for the cablingt.

    The splitters have one input port and 2 (or 3) exit ports, so you need to select for the first cable (or the first two cables in case of 1:3 splitter) which exit port shall be used.


    Best regards,


  2. Hi,

    please have a look on the attached WinProp API document which is included in the 2019.2 installation.

    If WinProp_Predict(see page 35) is called with DataRaysOut structure the ray properties are also computed and returned in the structure WinProp_Ray (see page 224). This includes the complex fieldstrength vectors, however not yet the transmission matrix. This means so far the transmission matrix cannot be written in the .str file via the WinProp API, but you might use the complex fieldstrength vectors instead.


  3. By default the power superposition is considered in ProMan for the superposition of the individual rays (representing the mean signal level), but also the coherent suerposition (considering the phases) can be activated, which then represents the fast fading (probably the pattern you are expecting).

    Similar process can be applied for the superposition of the results from two transmitters:

    • Either the power values of the two transmitters can be added, which represents then the expected mean signal level considering both transmitters
    • Or the phases for the superposition can be considered, which would assume that both transmitting antennas are synchronized. In this case the rays from both transmitters can be superposed based on the fieldstrength and phase values given in the .str files (one .str file per transmitter). The .str files can be also generated using the WinProp API.

  4. Hi,

    using 2019.2 and defining the time instance in the attribute TimeInstance of the class WinProp_Additional we are getting different results for different time instances, i.e. when loading the results in ProMan GUI, both the object and the related shadowing area is moving.

    Please find attached a corresponding ProMan GUI project with a simple moving box, where the same results can be achieved by using the WinProp API. I was adaping the APIExampleCPPIndoorPropagation and setting the time instance to 0s and 1s.


    AAU likes this

  5. Hello,


    depending on the option selected under the ray tracing settings either the power contributions of the individual rays are added or the phase is considered (coherent superposition):



    Results from different transmitters can be also combined in  ProMan by loading the first result (.fpp file) and then superpose the second result file .fpp via Edit => Add Data.

    Please have a look in the WinProp user manual.


    AAU likes this

  6. Hello,

    ProMan can be started with additional arguments passed in the command line in order to load and execute existing projects automatically. The first required parameter, which has to be passed to the command line is the path and the name of the ProMan project file to be loaded. Afterwards the prediction mode has to be specified.

    Please have a look for further details in the WinProp user manual.


    The alternative way would be using WinProp via API which is also included in the installation, e.g. under  C:\Program Files\Altair\2019_2\feko\api\winprop.

    Please have a look in the corresponding WinProp API documentation.

  7. As far as I see you defined a time-variant box and transmitter in your ProMan project.

    Which version of WinProp do you use?

    Please send your project (after export via File => Export => Export to zip) via e-mail (to reiner.hoppe@altair.de) and we will have a look.

    Generally the time-variant simulation is done as a loop over stationary snapshots (after having moved all the time-variant objects to the current position), so as workaround you can also save the stationary approach and define one project per time step in ProMan with the corresponding .idb file.

  8. Hello,


    the results on prediction planes can be exported to the ASCII line format via File => Export => Export Data (Planes), such ASCII files can be visualized in other software tools.

    In ProMan the results on (arbitrary oriented) prediction planes are only shown in the 3D view, here you can define by zooming etc. a nice view so that the prediction plane is fully visible and then save this view using the "Store" button on the upper right. For the next result (e.g. after having changed the project settings and rerun the simulation) you can then switch to the same view from the "Camera" drop down list in the upper right.

    Furthermore you can use the button "Save View to Image" to save the picture as .bmp, .jpg, or .png.

    All these buttons are only shown in the 3D view.


    AAU likes this

  9. Hello,


    the WinProp results are generally deterministic and consider the defined environment, so the results are also reproducible, i.e. if you run the simulation twice you will get two times the same results. The radio channel is generally subject to slow and fast fading. The slow fading represents the average signal levels, e.g. if you are behing a wall you get on average a lower signal level because of the shadowing due to the wall. The fast fading represents the "random" fluctuations due to changes of the phases for the individual propagation paths (rays) which are then either superposed contstructively or destructively at the receiver antenna. The fast fading can be reproduced in WinProp by using the standard ray tracing and activate the coherent superposition under the ray tracing settings. Then you will see the "random" fluctutaions of the signal level over short distances. Nevertheless also in this case the results are reproducible, but you might change the transmitter position slightly or analyze the signal levels at different receiver positions to see the fast fading and the random impact.


    AAU likes this

  10. Hello,

    after having defined the time-variant vector database (.idb file) in WallMan you can also check using the "time control" panel if the time-variant objects are moving as expected.

    Then you define a new propagation study in ProMan and select the "time-variant scenarios" and the corresponding .idb file. Under "Project => Edit parameters" Simulation tab then the field to define start time, end time and interval should be available.

    Generally we recommend to use the latest version of WinProp which is 2019.2.


  11. All the WinProp binary result files can be exported to ASCII formats (grid or line) in ProMan under File => Export => Export Data (Area).

    Alternatively the results can be directly written during the simulation in the ASCII grid format by activating the option "Additional output of results in ASCII files" under the Propagation tab of the project parameters in ProMan.

  12. Hello,

    using a network planning project in WiinProp you can consider the noise power (which depends on the bandwidth and noise figure of the receiver) as well as the co-channel interference from neighboring cells. Both will limit the signal-to-noise-and-interference-power ratio (SNIR). Please have a look in the ProMan manual for further details about defining and running network planning projects in WinProp.


    Best regards

  13. Hello Terry,


    the .add file with additional data from open street map can be loaded in ProMan (just for display, i.e. not considered in the wave propagation simulation) by using the following steps:

    • Load in ProMan the project (.net) based on the corresponding .odb file
    • Then in the menue select Display => Additional Data: Layer Management
    • Select "Load" in the shown dialog:image.png
    • Press OK and all the loaded layers from the .add file will be displayed in ProMan:
    • image.png



    Best  regards,


  14. Hello,

    in order to create a urban building database based on a scanned bitmap please select the following options after File => New Database:


    Next there will be a dialogue to enter the UTM zone (e.g. 32 for Germany) and then another dialogue will allow to load the bitmap.

    The detailed steps are described in the WallMan manual chapter 3.4.4.


    Alternatively to the manual drawing based on  imported bitmap you might try to use another format for the import, e.g. MapInfo or DXF/DWG if QGIS allows you to save the building data in one of these formats which are also supported by WallMan.


  15. Hello,


    the shapefile should contain the buildings as closed polygons. The polygon should not intersect itself, which means that the sequence of corners is not correct.

    According to the error message shown from your side this seems be to the reason why the building cannot be imported.


    If possible we recommend to use the MapInfo format for import in WallMan.

    But the shapefile format will also work if the buildings are defined correctly.


    Best regards

  16. Hi,

    this error means that the network planning simulation cannot be started because of the missing path loss results.

    Please have a look in the ProMan progress window (Antenna tab) to get more details why the path loss results cannot be computed with RunPro.

    Just scroll up in this progress window until you will the corresponding error message given in red.


    Best regards

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