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Visitor vivekv
Visitor
6,079 Views
Registered: ‎05-27-2010

FFT configuration Xilinx core v 8.0 (not a power of 2)

I am planning to use the the FFT core for a project and would like to know how the core should be configured if I am not using a power of 2 FFT. e.g. I want to calculate a 800 point FFT using a 1024-point FFT core. How should this be done?

 

Do I pad the additional 224 data points as zero to get a 800 point FFT using the Xilinx core?

 

Thanks in advance !

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Xilinx Employee
Xilinx Employee
6,077 Views
Registered: ‎02-06-2013

Re: FFT configuration Xilinx core v 8.0 (not a power of 2)

Hi

 

Have a look at the below link

 

http://forums.xilinx.com/t5/DSP-Tools/FFT-N-points-no-power-of-2/td-p/60598

Regards,

Satish

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Xilinx Employee
Xilinx Employee
6,045 Views
Registered: ‎08-01-2008

Re: FFT configuration Xilinx core v 8.0 (not a power of 2)

xilinx FFT core only support pow 2 FFT. you can try mixed radix FFT for your custom FFT points
Thanks and Regards
Balkrishan
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