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Altera_Forum
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12 years ago

Fixed point arithmetic not working for digital signal processing application

Hi, I am currently trying to do some simple digital signal processing using the Terasic AD/DA card attached to the Terasic DE0 board (which has a Cyclone III on board). My situation is that I a...
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Altera_Forum
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12 years ago

It looks to me like you have an issue with the bit-width somewhere in your code.

Take a look at this tutorial document:

http://www.ovro.caltech.edu/~dwh/correlator/pdf/esc-104paper_hawkins.pdf

http://www.ovro.caltech.edu/~dwh/correlator/pdf/esc-104slides_hawkins.pdf

http://www.ovro.caltech.edu/~dwh/correlator/pdf/esc-104code_hawkins.zip

You will see several examples of what happens when things go wrong. Look at your code to see if you can figure out your error.

Cheers,

Dave