Indoor UWB Using IRT

Perform network analysis for ultra-wide band (UWB) frequencies in an indoor scenario.

Air Interface

The air interface was created manually; therefore there is no .wst file included for this example.
Tip: Click Project > Edit Project Parameter and click the Air Interface tab and under Multiple Access, select UWB.

A total of 36 carriers from 3.1 GHz to 10.1 GHz were defined on the Air Interface tab. The properties of the mobile station (the receiving antenna anywhere in the computational domain) are also defined here. The receiver needs a power level of at least -90 dBm.

Sites and Antennas

A single omnidirectional antenna is located in an indoor environment. The purpose of the simulation is to determine the coverage for a wide range of frequencies. Under the properties of the antenna, instead of assigning one carrier to the transmitter, the UWB air interface has automatically assigned all carriers.

Computational Method

The database was preprocessed in WallMan, and the intelligent ray tracing model (IRT) is used.


Received power can be displayed for every carrier. In Figure 1, the power for carrier 8 is displayed.

Figure 1. The received power from carrier 8.
Under the Results: Network in the result tree, you can view the number of received carriers in every location.

Figure 2. The number of received carriers.

When not all carriers are received, it is likely that the higher frequencies are missing as they suffer higher losses during transmission through walls and during diffraction at corners.