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Doubt in 32 point FFT Implementation

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danya

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Suppose i need to implement 32 point and 128 point FFT using radix-4.
For using radix-4, the total number of input samples must be a power of 4. But since 32 and 128 are not a power of 4, I know that, i can use Mixed Radix4/2 with 2 stages of radix-4 and 1 stage radix-2.But here can i use radix-4 FFT with zero padding ( zeros are added to make FFT length power of 4)?
 

danya

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Hi,
pls reply.

Regards
Danya
 

zorro

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Hi Danya

yes, you can.
You will obtain a FFT with twice the number of points. The even-order points form the desired FFT.
Regards

Z
 
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    kunu

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