[hpsdr] question on using FFTs in SDR

[Robert McGwier]

http://cnx.org/content/m12022/latest/


Greg Overkamp wrote:
> ***** High Performance Software Defined Radio Discussion List *****
> 
> I have a couple questions on how the FFT is used in
> software defined radios to do filtering.
> 
> 1) Is the time-domain data input to the FFT, and the
> time domain output of IFFT, overlapped in time? If so,
> what is the extent of the overlap?
> 
> 2) Is a window function applied to the time domain
> data before the FFT?
> 
> Any help is much appreciated.
> Greg
> WD9DEX
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AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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