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User1582192733150209

Occasional Contributor

5 years ago

Digit Reverse Order issue for INTEL FFT IP core

Hello Sir/Madam, I am simulating the intel FFT IP core, and seems the index of non-natural order FFT output is not fully match the index digi reverse calculation. Quartus prime pro 17.1 Model...

case2fftipsimulation.rar3.4 MB

case1fftipsimulation.rar3.4 MB

User1582192733150209

Occasional Contributor

5 years ago

Any update?

below is the MATLAB plot for FFT verification .

left top cornet one is for signal source

right top cornet one is for direct FFT using matlab itself

with this we can expect 2 spike at index 4 and index 252.

the spike I mentioned is amplitude 1280.

thanks

Jim

User1582192733150209

Occasional Contributor

5 years ago

Forum Discussion

Digit Reverse Order issue for INTEL FFT IP core

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