Antenna parameters (IFFT,CIR,​PATH_LOSS,​Delay_spre​ad)

this UWB_CPWfreespace.csv data is frequency domain signal

one of vector means frequency and the last one is magnitude of the signal

i want to change this csv data to ifft in matlab and find channel impulse response, path loss, rms delay spread

(frequency , magnitude) -> (time, voltage)

channel impulse response

path loss

rms delay spread

Can anyone please help me with the matlab code?