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Re: [Discuss-gnuradio] gmsk_demod question
From: |
Matt Ettus |
Subject: |
Re: [Discuss-gnuradio] gmsk_demod question |
Date: |
Thu, 08 Feb 2007 18:20:36 -0800 |
User-agent: |
Thunderbird 1.5.0.9 (X11/20070104) |
Hans Glitsch wrote:
> Hello,
>
> inside the gmsk_demod function there is a quadrature_demod_cf block
> connected to a clock_recovery_mm_ff block.
>
> What is the purpose of the clock_recovery block? Is it there to
> correct the timing when the sample rate is not an exact integral
> multiple of the samples/symbol?
>
> If that's true then is it true that I can safely do away with the
> clock_recovery block if I can arrange to make the sample rate be an
> exact multiple of the samples/symbol?
You still need clock recovery because the transmitted signal has an
arbitrary time offset and clock error relative to the receiver.
Matt