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
o the AGC2 block since
the QAM Demod block was originally implemented.
Ernest
On Thu, Oct 19, 2017 at 6:48 PM, E Fardin & P Le
wrote:
>
>
>
>
> - Original Message -
> From:
> "Kyeong Su Shin"
>
> To:
> "Ernest Fardin"
> Cc:
>
Hi,
The QAM Mod / Demod blocks are marked as deprecated. Is there a way to find
more information on why they are obsolete? Given that they are deprecated,
I guess there is a better alternative in GNU Radio to do the job performed
by these blocks, but it is not immediately obvious to me.
Thanks,
Hi Anil,
You can fix the buffer size using the Min Output Buffer parameter (under
the Advanced tab in your block, assuming you're using GRC).
[image: Inline image 1]
Regards,
Ernest
On Thu, Nov 16, 2017 at 1:56 PM, Anil Kumar Yerrapragada <
yanilkumar2...@gmail.com> wrote:
> Hi all
>
>
> I am
Hi,
I installed GNU Radio v3.7.12.0-4-g67a2427 from source on Ubuntu 16.04.3
LTS. When I try to run blocks from some OOT modules, for example gr-pyqt, I
get a template error when running the gr-pyqt table example:
File ".../gr-pyqt/examples/table_test.py", line 75
self.my_table = Template e
Hi Linda,
The argument to boost::format() might need to be checked. GR_LOG_DEBUG() is
used in [1], for example.
Cheers,
Ernest
[1] https://github.com/gnuradio/gnuradio/blob/493338d86d82e9
e10f5d9d4b42f2473b7275c7a2/gr-blocks/lib/test_tag_variable_r
ate_ff_impl.cc#L80
On Wed, May 30, 2018 at
Hi,
It could be that calls to set_ampl() and set_freq() are made before
analog_sig_source_x_1 is declared. Try moving the signal source
declarations to the top of the # Blocks section.
Cheers,
Ernest
On Thu, Jul 12, 2018 at 12:14 AM, Sims, William Herb (MSFC-EV41) <
herb.s...@nasa.gov> wrote:
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] https://destevez.net/2017/08/ag
Hi Dustin,
Without knowing all of the details, I guess the FILTER component could be
missing from CMakeLists.txt:
set(GR_REQUIRED_COMPONENTS RUNTIME FILTER)
More details in [1].
Cheers,
Ernest
[1] https://www.gnuradio.org/doc/doxygen/page_oot_config.html
On Mon, Dec 2, 2019 at 6:40 PM Dusti