Hi Riccardo,
I see that you want to know how the propagation delay is calculated in the RayTracing approach.
Note that the “raytrace” function creates a “comm.Ray” object for each ray from transmitter to receiver. This means that the propagation delay for each ray, including Line-of-Sight and Reflected rays, is calculated individually.
In the "CDL Channel Model Customization with Ray Tracing" example provided by the 5G Toolbox, there are four paths from the transmitter to the receiver. The corresponding propagation delay values for these paths are stored in 'rays{1}.PropagationDelay'. These values can be used to calculate a single value of propagation delay that accounts for multipath fading.
For more information on the 'PropagationDelay' parameter, please refer to the following documentation.
Hope this answer helps.
