Re: [Discuss-gnuradio] Receiving BPSK signal

[Martin Braun (CEL)]

On Mon, Jan 14, 2013 at 12:27:25AM -0800, luca wrote:
> Hi Tom,
> thank you ..but I'm sorry ..I'm not convinced... ;)
> I try to replace the two terms by usign just one of them..
> well if I use rrctaps for both, the signal is not tracked, while if I use
> the firdes.root_raised_cosine(32, 32, 1.0, 0.35, 44*32), it works but it is
> noisier.

Luca,

both blocks have different sampling rates at the input. This is
reflected in the taps calculation. Otherwise, they're identical.

Creating taps for PFB blocks is not exactly the same as doing so for
their non-PFB counterparts.

You should definitely read this:
http://gnuradio.org/doc/doxygen/page_pfb.html
http://gnuradio.org/doc/doxygen/classgr__pfb__arb__resampler__ccf.html

These might also help:
http://gnuradio.org/doc/doxygen/classgr__firdes.html
http://gnuradio.org/doc/doxygen/classgr__pfb__clock__sync__ccf.html

MB

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