Hi all,
I am trying to add a block which does an extra clever work. This needs a
sound knowledge on editing several subdirectories like swig, grc and
cmakefiles.txt etc. as you have stated in the out of tree modules page.
kindly share about where can I learn about editing them.
Thanking you in
The test clips have AC3 audio. AC3 is not used much at all in Europe
because broadcasters have to pay an extra licensing fee to Dolby to
transmit it. It looks like DVBViewer does not come with an AC3 decoder,
but you can add one.
Great to hear that you work finds its way into the official thing!
At the moment, as the RF stuff works, I am trying to learn about all this
crazy video file stuff, for being able to create transport streams with my
own content. Up to now I am still testing with the cartoon .ts :) Still my
Yes, rotated constellations are a new feature of DVB-T2. More reading here.
http://www.etsi.org/deliver/etsi_ts/102800_102899/102831/01.02.01_60/ts_102831v010201p.pdf
See section 9.2.3. In addition to the rotation, the I and Q components
of a QAM/QPSK symbol are cyclically delayed. Since
Hi Sudarshan,
we're not really hiding any information there -- basically, the trick
would be to look at other OOTs, experiment yourself and come here if any
specific questions arise.
However, does an extra clever work doesn't really explain why you'd
need to divert from the standard workflow as
?Dear All,
For some experiments I would like to transmit using N210s with XCVR2450 with
maximum transmit gain.
I can see Ettus website that the XCVR2450 board in the transmit path has a gain
of:
VGA: 0-30 dB range
BB: 0-5 dB range?
Can I just set the gain via GNU Radio/UHD to 35, or do I
Hi all,
I crated a block named costas_loop_cc. it works fine for 2psk, 4psk,4qam
and 8psk. But it does not support to 16QAM i.e order 16. when I execute
with order 16 it shows the error like this:
Generating: /home/lekha/Downloads/mpsk_stage6.py
Generating: /home/lekha/Downloads/mpsk_stage6.py
Hi all,
I have recently installed openbts-2.8 on a banana-pi (Processor: armv7)
board to work with USRP N210. Had all the pre-requisite installations and
procedures been done, I noticed that, the transmitter is not working.
Though this issue seems to be related with openbts but since they are
On 04/07/2015 08:14 AM, Zamrath Nizam wrote:
Hi all,
I have recently installed openbts-2.8 on a banana-pi (Processor:
armv7) board to work with USRP N210. Had all the pre-requisite
installations and procedures been done, I noticed that, the
transmitter is not working.
Though this issue
Hi Marcus,
Can you ping the N210?
Yes. ping 192.168.10.2 works fine.
If you use: uhd_usrp_probe --args addr=192.168.10.2, What happens?
uhd_usrp_probe also works fine. Couldn't check with --args. I am away
from the board now for few hours. Until then...
Is your ethernet interface
There are several issues with your code:
1) a PCCC encoder (as any digital communication encoder) cannot accept a
sine wave as its input!
it only accepts discrete information.
In this case it should be numbers {0,1,2,...,X-1} where X is the input
alphabet size of your fsm's.
2) The output
Dear all!
When I have multiple hw audio (or other) sources and sinks gnuradio is
suffering from the two clock problem.
From the docs I have read, one means to mitigate against under- or over-
runs is to have the sender always be a little faster.
While I understand that this will help keep the
Hi Ron,
I have not followed the development of DVB-T2/S2 lately. Are there receiver
implementations for the T2/S2 or just transmitters?
Thanks,
Bogdan
On Tuesday, April 7, 2015 1:32 PM, Ralph A. Schmid, dk5ras
ra...@schmid.xxx wrote:
#yiv0268530338 #yiv0268530338 -- _filtered
The other Marcus here, I was the one that said something about the LEDs:
If your N210's transmit LED is not on, then openBTS simply did not
instruct the USRP to send samples.
Thus, you will have to fix the problem on openBTS side. I'm pretty sure
we went through all the diagnostics that made
Hi John - There aren't a lot of choices to do clipping; this is
basically:
{{{
float* in = (float*) INPUT;
float* out = (float*) OUTPUT;
for(int nn=0; nnNUMBER; ++nn) {
*out++ = std::max(std::min(*in++, 1.0),-1.0);
}
}}}
You could use Volk's volk_32f_x2_max_32f and volk_32f_x2_min_32f
kernel
On Tue, Apr 7, 2015 at 7:06 AM, Vishwanatha H G
vishwanatha.1si12ec...@gmail.com wrote:
Hi all,
I crated a block named costas_loop_cc. it works fine for 2psk, 4psk,4qam
and 8psk. But it does not support to 16QAM i.e order 16. when I execute
with order 16 it shows the error like this:
Hi,
I recommend having a look at this page:
http://gnuradio.org/redmine/projects/gnuradio/wiki/ReportingErrors
Also, in your case, there is a separate document generated somewhere in
the build directory from a docbook XML file.
M
On 06.04.2015 14:17, Marbellys Ramos Guerrero wrote:
Hi,
Hi Marcus and Marcus,
Thank you for the valuable comments given. It made us to shrink all our
focus on OpenBTS. But I see an inactive list in openbts side made me to
wait for there response for a while. That's why I thought to circulate this
in gnuradio list hoping for any assistance to overcome
If it were me, the easiest way to get around an issue like this is to start
over. You might have a linker problem.
./pybombs remove
delete the pybombs and target directories
clone the latest version of pybombs
./pybombs install gnuradio
If you still have an issue then go from there.
v/r,
Hi All,
I made a mistake this morning and tried to refresh gnuradio with
pybombs to test an FCD ProPlus against the latest main branch. Pybombs
has worked fine up until now and I successfully installed it on a
different machine on Sunday. Today it crashed and I found it had an
empty volk
The DVB-T2 transmitter repository is here:
https://github.com/drmpeg/gr-dvbt2
In the README, there are links to test transport streams for a few
representative flow graphs.
gr-dvbt2 is also part of pybombs.
Ron
On 04/07/2015 08:02 AM, g.roel...@telenet.be wrote:
Hi,
Can someone share the
Hi Roland,
I have used the method you suggest in the distant past to match sample
rates of audio hardware with nominally equal but independent clocks. I
found it worked ok as long as the resampler you are using can handle
small dynamic offsets ie: +/- 0.1Hz without noticeable artifacts. The FIFO
Thanks - I tried that. Same issue.Something wrong with UHD and my setup perhaps?
Mike
/home/mike/pybombs/src/uhd/host/tests/sid_t_test.cpp:96:48: note:
suggested alternative:
In file included from
/home/mike/pybombs/src/uhd/host/include/uhd/types/sid.hpp:22:0,
from
Only transmitter implementations for now. They are here:
https://github.com/drmpeg/gr-dvbs2
https://github.com/drmpeg/gr-dvbt2
The DVB-T2 implementation supports T2-Lite, tone reservation PAPR
reduction and MISO processing.
Ron
On 04/07/2015 06:38 AM, Bogdan Diaconescu wrote:
Hi Ron,
I
Dear list,
excuses for repeated posting. Two weeks before abstract submission
deadline I'd like to direct your attention to the
Software Defined Radio Academy 2015 in Friedrichshafen (HAMRADIO
subconference)
http://www.sdra-2015.de/pages/call-for-papers.html
Please feel invited to submit
On Tue, Apr 7, 2015 at 4:19 PM, Mike Willis willis...@gmail.com wrote:
Thanks - I tried that. Same issue.Something wrong with UHD and my setup
perhaps?
Mike
Have you asked on the usrp-users list? Seems a problem more related to the
UHD than PyBOMBS or GNU Radio. Unless it's a change in
On Tue, Apr 7, 2015 at 7:12 PM, Mike Willis willis...@gmail.com wrote:
Hi Tom.
I think this is the right place as UHD is part of the standard Gnuradio
build, so it doesn’t really matter if you have a usrp or not, it will crash
the build.
Mike
It's technically an optional dependency,
Hi Tom.
I think this is the right place as UHD is part of the standard Gnuradio build,
so it doesn’t really matter if you have a usrp or not, it will crash the build.
Mike
From: trond...@trondeau.com [mailto:trond...@trondeau.com] On Behalf Of Tom
Rondeau
Sent: 07 April 2015 23:06
HI
Thank you very much for your response, you really helped me.
In my last post, i made a mistake. The fsm that i wanted to use is
fsm=1,2,[13,11]. If i understood well, i should use a 16qam modulation.
But i`m using an error rate block, just like in the example pccc.grc (only
that i`m not using
In your .xml file, the line:
makehowto.detect_ff($pfa, $L, $samples)/make
should be:
makehowto.howto_detect_ff($pfa, $L, $samples)/make
Ron
On 04/07/2015 09:38 PM, Abhishek Shukla wrote:
hey,
i have successfully imported detect_ff block. but right now I am
getting runtime error while
I just issued a pull request to fix this issue. The problem is that on a
few systems, such as yours, unit32_t is undefined in the top-level
namespace, and should really be boost::uint32_t anyway to match the
actual values being compared. This fix is just for a test, so it won't
make any difference
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