Re: [Discuss-gnuradio] Relative merits of synchronization techniques

[Matt Ettus]

> So if the sample stream is known to have sufficient zero crossings and
> has been properly filtered, do you see any hazards to going with the
> latter technique?
>  

Looking for zero crossings doesn't work as well when you have a low SNR, 
or you have multipath.  Multipath can make the bits non-symmetric, 
resulting in an optimum sampling point which is not centered between 
zero crossings. 

I would suggest you look at the bit-timing we use in the ATSC code or in 
the current gmsk code (which doesn't use a correlator).

Matt