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Altera_Forum
Honored Contributor I
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Ouput mismatched with input for unity gain using FFT megacore

I am implementing an OFDM demodulator using FFT megacore. The parameter used in FFT are 64 samples, streaming, 8 bit input and output. However, the output have some problem. So, i built a unity gain circuit from FFT to verify the output. However, the output of the scaler which should be the same as the input to the IFFT megacore block (pin sink_real and sink_imag) show different output at pin sca_source_real and sca_source_imag. I attach the simulation report as fft_test1.sim.cvwf. Can anyone please help on this?:confused:

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