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Message
From: RT<mfoc73@d...>
Date: Fri Jan 21 10:32:42 CET 2005
Subject: [oc] Is there any alternative method to synthesise codes using
math_real?
rishadh@y... wrote:> Respected sir(s)/ madam(s),
>
> I am a final year student working on a project on FFT. Since my inputs &
> twiddle factors require the use of math_real library, I used it & was
> succesful in simulating it.
>
> But, can you tell me how I can synthesise my code?
Well, the short answer is that you can't, without also creating
floating-point adders and multipliers, which is much harder than coding
an FFT.
If you really want to synthesise without floating point, then you'll
need to go back to the drawing board and look up integer and block FFTs.
Doing an FFT with integer arithmetic is a difficult problem, because of
the nature of Fourier Transforms: you get very little dynamic range in
integers.
RT
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