Re: [Discuss-gnuradio] Unexplained out-of-sequence packets...

[Marcus D. Leech]

>
>
>
> Typically, if you can't keep up at a slow decimation, going to a
> faster one would make things worse, not better.  The only thing I can
> think of to explain what you are seeing is that you might be doing a
> lot more processing at the lower rate.  For example, at the lower
> sample rate, you might be making your filter transition bands very
> narrow, resulting in very long filters.
>
> Matt
>
>
I've run into that problem (in a different context--not with USRP2). If
you make your filter transition bandwidth
  some fraction of the overall bandwidth of the filter, you can end up
with longish filters and lower bandwidths.

I was used to using an expression like (filter_bandwidth/10) for the
transition bands, but that ends up with
  quite long filters.


-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org