multipath power from raytracing

Hello everyone, i am using the raytracing propagation model on an urban enviroment, and i create the channel between transmitter and receiver with the comm.RayTracingChannel object. I set the channel filtering proprierties to false, so i can obtain in output the channel impulse response (CIR). Now, I alredy know i can use the showProfile() function to analyse the power of every tap, but why when i compute the module of every single path CIR, this is different from what i see from power profile function, especially for NLOS path? showProfile function show me the module of 10^[(txGain+rxGain-pathLoss)/20]*exp(1i*pathPhaseShift) depending on the time of arrival, so why it is different from the module of CIR?

Answer 1

[Umar]

Hi Nicolas,

To help answer your question, align the two representations, you can calculate the power of each tap from the CIR by squaring the magnitude of each tap. This will provide a power-weighted view similar to what showProfile() function displays. By squaring the magnitude of the CIR, you can compare it more directly to the power profile obtained from showProfile().

Hope this will help resolve your problem.