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From: | Mir M. Ali |
Subject: | Re: [Discuss-gnuradio] Questions about synchronization and modulation in benchmark |
Date: | Tue, 2 Feb 2010 02:21:20 -0600 |
Hi Adib
Thanks for the reply.
I check it in the net and download it. I don't know about costas loop and clock recovery in detail. may I know how they they estimate frequency offset, and recover it?
as far as I know, they are using gr.quadrature_demod_cf(1) & and subtract it using gr.single_pole_iif_filter_ff(alpha) for frequency offset?is it right?
TimOn Sun, Jan 31, 2010 at 4:03 PM, adib_sairi <address@hidden> wrote:
there is some work from Thomas Schmid which modulate and demodulate O-QPSK
which mean for IEEE802.15.4 standard.. you can search and download the code
online. good luck..
Adib
> _______________________________________________
Timothy Lawrence Sitorus wrote:
>
> HI all,
>
> Please anyone help me.
>
> Is there anyone succeeded to modulate qpsk, even frequency offset occurs?
>
>
> Best Regards,
> Tim
>
> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
>
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