gt; "Ernest Fardin" <efar...@ieee.org>
> Cc:
> "GNURadio Discussion List" <discuss-gnuradio@gnu.org>
> Sent:
> Wed, 18 Oct 2017 15:11:50 -0700
> Subject:
> Re: [Discuss-gnuradio] Demodulation of Intermittent QAM Signal
>
>
> Hello Ernes
Hello Ernest Fardin:
As you thought, synchronization loops in the PSK/QAM demod blocks may
wander off if you input noise into those blocks.
I asked a same question before, and the answer was not to feed in any data
to the QAM demod block when you think the transmitter is not on. I did not
try
Hi,
I have a simple QAM16 loopback (Gray code, diff encoding, 4 sps) working as
follows:
QAM Mod ---> Throttle ---> QAM Demod
This works fine if I have a constant signal level from the Tx. However, if
I add a variable gain between the Tx and Rx and drop the Tx level to zero,
then restore the Tx
