Re: [Discuss-gnuradio] gmsk_demod question

[Matt Ettus]

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