Re: FFT pad or no pad
> using FFT() without padding zeros will not create any problems. the reason why we can go for a 512 point (or higher radix 2 point) FFT is that when the fft bloxk is implemented in hardware, the resources needed to implement radix 2 dit or dif structures (or similar ones) is very less.
If you are concerned only about the simulation then there is no big difference. it will just affect your resolution. higher point FFT=> better resolution. :)