Conversion of CIR to CFR matrix, signal processing

Job ID: 34585577

Budget: ₹600 – ₹1,500 INR

Hello
I have a CFR matrix which is 4D and have to convert that to CFR matrix, i know it can be done by FFT but i need to know the relation between the two. You only need to explain few things to me so it will Rs700 for the project.
Thanks