On Sat, Jul 27, 2013 at 10:06 AM, adream <adream...@gmail.com> wrote:
> Hi guys,
>  I'm learning BPSK demodulation recently.
>  I have learned how to do the carrier synchronization in the file of
> digital_costas_loop_cc.c.
>  so  my question is which classes do the symbol synchronization in the gnu
> radio.
> thank you very much.

There is the polyphase clock sync block (pfb_clock_sync_ccf). Look at
generic_mod_demod in gr-digital/python/digital for how to use it.

Tom

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