rachaganesh
Newbie level 3
Dear all,
I have designed 8-point FFT using Xilinx IP core. I have selected
floating point I/P and O/P options with Pipelined streaming I/O. I
have written a sample testbench for 8-point input and I got some o/p.
In general
The back to back connection of IFFT and FFT should give same results
of I/P and O/P.
1. I have generated 8-point o/p from FFT
2. I have connected above 8-point o/p of FFT to IFFT i/p
My problem is
3.I should get the IFFT o/p=FFT I/P (Based on theoritical concept).
This matching I am unable to get it.
To solve this problem I understood from IP Core theory that the 24/25
bit precision has some impact on O/P and I/P .Is this correct?
And how to get matched FFT and IFFT input outpus.
Please respond us as earlty as possible.
I have designed 8-point FFT using Xilinx IP core. I have selected
floating point I/P and O/P options with Pipelined streaming I/O. I
have written a sample testbench for 8-point input and I got some o/p.
In general
The back to back connection of IFFT and FFT should give same results
of I/P and O/P.
1. I have generated 8-point o/p from FFT
2. I have connected above 8-point o/p of FFT to IFFT i/p
My problem is
3.I should get the IFFT o/p=FFT I/P (Based on theoritical concept).
This matching I am unable to get it.
To solve this problem I understood from IP Core theory that the 24/25
bit precision has some impact on O/P and I/P .Is this correct?
And how to get matched FFT and IFFT input outpus.
Please respond us as earlty as possible.