hi
i want tutorial on psk_mod block on gnuradio
Particularly parameter differential encoder
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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 -04
On 07/10/2019 04:19 PM, Ellie White wrote:
Hi Marcus,
Thanks for getting back to me! I really appreciate your suggestion --
why didn't I think of that! I have done similar calculations before to
determine the amount of time from the beginning of a run, but for a
much less precise application.
T
On 07/10/2019 02:54 PM, Ellie White wrote:
Hello!
I am working on a radio astronomy project with the Green Bank
Observatory / NRAO Central Development Lab this summer, utilizing GNU
Radio and an Ettus Research SDR, and I've got a question regarding how
to collect metadata information from a file
On 07/10/2019 04:45 PM, Derek Kozel wrote:
Hi Ellie!
The USRP has an internal time register which starts counting up from 0
when the power is applied. You can use the external 1 PPS input and the
set_time_next_pps command to snap that register into alignment with
UTC/TAI as long as you have a GP
Hi Ellie!
The USRP has an internal time register which starts counting up from 0
when the power is applied. You can use the external 1 PPS input and the
set_time_next_pps command to snap that register into alignment with
UTC/TAI as long as you have a GPSDO or similar that outputs a 1PPS signal.
I
Hi Marcus,
Thanks for getting back to me! I really appreciate your suggestion --
why didn't I think of that! I have done similar calculations before to
determine the amount of time from the beginning of a run, but for a
much less precise application.
This brings me to another question, though --
The thing to note is that the UHD sends a time stamp only on start of streaming
and whenever there’s an overrun.
You can know the time of any given sample by knowing the sample rate and offset
from the beginning.
In your case you will have to throw in some more factors to account for FFT
siz
Hello!
I am working on a radio astronomy project with the Green Bank
Observatory / NRAO Central Development Lab this summer, utilizing GNU
Radio and an Ettus Research SDR, and I've got a question regarding how
to collect metadata information from a filesink.
I have attached the flowgraph I am usi
Hello folk,
We made some progress. This short ninput_items size problem results from
"rational_resampler". Rational_resampler is used as interpolator by 2.
So, lets say, there is a tagged packet on input of rational_resampler
with length of 975. We expect that, rational_resampler should put a
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 system
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 i
Optimizing flags can be set per submodule. I just checked the build with
VERBOSE=1, and the -msse2 flag is only set for DTV (and VOLK) files.
Ron
On 7/10/19 02:05, Müller, Marcus (CEL) wrote:
Hi Ron,
wasn't aware of that.
I *think* we shouldn't be doing that. Optimizing flags can't be set per
Hi Ron,
wasn't aware of that.
I *think* we shouldn't be doing that. Optimizing flags can't be set per
submodule, but only for the whole build. Would you agree we need to
"centralize" that in some way?
Best regards,
Marcus
On Tue, 2019-07-09 at 07:36 -0700, Ron Economos wrote:
> This is just a gu
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