Multi-Story Building

Model Type

This is an indoor project featuring a multi-story office building.

Sites and Antennas

There are two antenna sites at different locations and elevations in the building for the best coverage. Two omnidirectional antennas are placed at two different levels of height, 2.5 m, and 9.95 m. Both antennas use the same carrier frequency of 2 GHz.

Computational Method

The prediction method used in this model is 3D intelligent ray tracing3D intelligent ray tracing (IRT - with preprocessed data). This method requires a preprocessed geometry database.

Tip: Click Project > Edit Project Parameter and click the Computation tab to change the model.

The preprocessed database is created in WallMan, where result resolution and prediction heights are specified. The result resolution and prediction heights can be viewed, but not modified in ProMan by clicking Project > Edit Project Parameter and clicking the Simulation tab. Prediction heights, in this case, are 1.5 m, 5.5 m, and 8.5 m, respectively.

To avoid unnecessary computations on floors far from the transmitter, select the Check vertical distance to TRX, Max. allowed vertical distance check box and set to 5 m. Consequently, the results for each antenna are available only for 2 of the 3 prediction heights.

This method performs a rigorous 3d ray tracing prediction resulting in high accuracy while preprocessing reduces the required computation to a large degree.

Results

Propagation results show, at every location, the power received from each transmitting antenna individually. Figure 1 shows a prediction at 8.5 m.