Thanks Andy.
Indeed the "symbol_sync" block is very robust and recovers immediately.
Everything seems to be working now.
Achilleas
On Wed, Jul 10, 2019 at 9:45 AM Andy Walls
wrote:
> Hi Achilleas:
>
> > From: Achilleas Anastasopoulos
> > Date: Wed, 10 Jul 2019 08:45:03
Hi Achilleas:
> From: Achilleas Anastasopoulos
> Date: Wed, 10 Jul 2019 08:45:03 -0400
> Hi Ernest,
>
> Although this explains why the system breaks when the noise becomes
> large (~10dB) and so the overall signal amplitude increases beyond
> (~1), it cannot explain why the
Hi Ernest,
Although this explains why the system breaks when the noise becomes large
(~10dB) and so the overall signal amplitude increases beyond (~1), it
cannot explain why the system does not recover AFTER
all amplitudes are set back to normal values (~1) and noise back to -30dB
...
It was my
Hi,
I think this behaviour may be due to the level into the Polyphase Clock
Sync block. The block expects a signal amplitude of 1 as explained in [1].
An AGC between the Correlate and Sync and the Polyphase Clock Sync blocks
might do the trick.
Cheers
Ernest
[1]
Hi all,
I am not very successful in running the uhd_corr_and_sync_tx/rx.grc example
in the gr-digital examples directory (3.7.13.5) using usrps.
In an effort to debug it, i merged the two graphs and eliminated the uhd
sink/sources (see attached) and so I am running a simulation without the
