[hpsdr] Blackfin

Frank Brickle brickle at pobox.com
Thu Jul 12 17:30:32 PDT 2007


Chris Albertson wrote:

> The processor that is closest to the incoming data is going to
> be doing a lot of FFT and FIR filter stuff.  After this stage the
> bandwidth requirements go down.  

There is no reason whatsoever to assume this. In fact just the
opposite could easily be the case.

On the SDR-1000, for example, in one typical mode of operation,
you get the same bandwidth out as in, *plus* high-resolution
spectral points and other measurement data at whatever rate the UI
requests it. In fact in some existing scenarios you are providing
a fairly large multiple (say 8 or 16 or 32 or 64) of the input
bandwidth as output, along with spectra for each sub-band.

73
Frank
AB2KT

 1184286632.0


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