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Altera_Forum's avatar
Altera_Forum
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18 years ago

FFT timing?

Hi I need to perform a 256 point FFT operation. I use the SOP and EOP signals to indicate the start and end of operation with sink_ready always high. My simulation suggests that the input data is per...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

How can you be sure that your output is wrong? Are you comparing your output with the result of a Matlab simulation?

In this case you have to be sure that your Matlab simulation is using the same numerical format of the Altera FFT implementation, i.e. resolution and/or real/integer format.

At 1MHz you should not experience any timing problems, so the error could be hidden somewhere else.