I am facing issues regarding WX GUI fft sink block..
First that whatever center frequency i am providing it is showing a peak at
that frequency whether input signal is there or not..??
Secondly there is a question that whether it can automatically shift to the
frequency by detecting the frequency
Hi Jordan,
you can use (complex) bandpasses to select either halfband, and frequency
translate the results to your heart's desire individually, if this is what
you're after. You might need to design that filter yourself -- which isn't as
hard as it sounds:
use the gr_filter_design tool, which
On Wed, 23 Apr 2014 12:04:52 +0500
ali hanif alihanif...@gmail.com wrote:
I am facing issues regarding WX GUI fft sink block..
First that whatever center frequency i am providing it is showing a peak at
that frequency whether input signal is there or not..??
The peak means that there is a DC
Hi Hoang,
aha! Now you're mentioning USRPs, we know what platform type you refer to. What
USRP are you using?
1. as you can see, these instructions belong into the work function of a block
that you write. You'll have to work through the GNU Radio guides on the
gnuradio.org start page, after
Hi Bolin Hsu,
I hope I understand you correctly, so let's ask some questions:
In my application, the transmitted signal could be scaled up to +/-5% in time
domain.
This is most probably not what you wanted to say. Scaling something in time domain means
multiplying it with a factor of X,
Hi!
Just a side note: Try to replace your WX GUI widgets with QT ones (also set the
Generate Option to QT in GRC). They are pretty mature and work well; also, in
the long run, GNU Radio's going to move away from WX.
Greetings,
Marcus
On 04/23/2014 01:06 PM, Attila Kinali wrote:
On Wed, 23
Hi Gayathri,
this is not GNU Radio related -- UHD is ettus' driver framework for its USRPs
and only *used* by gr-uhd.
Most of your questions are answered in the UHD users Manual, see the ettus
website, http://code.ettus.com/redmine/ettus/projects/uhd/wiki
as well as in the man pages, usually
Hi,
I'm using a USRP N210 and I need a 10 MHz reference clock. From
ettus.com I got:
Ref Clock - 10 MHz
Using an external 10 MHz reference clock, a square wave will offer the
best phase noise performance, but a sinusoid is acceptable. The
reference clock requires the following power
Hi,
looking at the N200 schematics from files.ettus.com, I'd say:
stick to the 0dBm, your clock signal has to pass a transformer and some
safety/matching circuitry and still ought to be more accurate than the on-board
VCTCXO; the clock multiplexer
On Tue, Apr 22, 2014 at 5:09 AM, Damon qiu.guowang...@gmail.com wrote:
Hi all,
Recently I am learning the grextras project. I am confused about the
message port which is designed in grextras.
Why will we not get a error when the message ports do not connect to
other message ports? I thought
Thank you Marcus,
I will wait for some answers from usrp-us...@lists.ettus.com before
proceeding.
Best regards,
Antonio
On 04/23/2014 03:31 PM, Marcus Müller wrote:
Hi,
looking at the N200 schematics from files.ettus.com, I'd say:
stick to the 0dBm, your clock signal has to pass a
We posted those numbers because they are the numbers we know will work
reliably. -15dBm is unlikely to work well, but you won't damage anything
by trying.
Matt
On Wed, Apr 23, 2014 at 3:43 PM, Antonio Petrolino
apetrol...@mbigroup.itwrote:
Thank you Marcus,
I will wait for some answers from
hi,
I tried using QT GUI sink to measure frequency offset between 2 USRPs.but
when I click Execute the flow graph,a window appears then in a blink
disappears.and i got this massage.did I set something wrong?
Generating: /home/sdr/top_block.py
Executing: /home/sdr/top_block.py
linux; GNU C++
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Strange...
Are you sure you set the Generate Options to QT GUI (instead of WX)?
Greetings,
Marcus
On 23.04.2014 16:25, sunkel wrote:
hi, I tried using QT GUI sink to measure frequency offset between 2
USRPs.but when I click Execute the flow
im pretty sure I did that.i set Generate Options as QT GUI.
if I didnt set Generate Options i will get this error:
Generating: /home/sdr/top_block.py
Executing: /home/sdr/top_block.py
Traceback (most recent call last):
File /home/sdr/top_block.py, line 118, in module
tb = top_block()
On 04/23/2014 09:07 AM, Antonio Petrolino wrote:
Hi,
I'm using a USRP N210 and I need a 10 MHz reference clock. From
ettus.com I got:
Ref Clock - 10 MHz
Using an external 10 MHz reference clock, a square wave will offer the
best phase noise performance, but a sinusoid is acceptable. The
On 04/23/2014 09:31 AM, Marcus Müller wrote:
Hi,
looking at the N200 schematics from files.ettus.com, I'd say:
stick to the 0dBm, your clock signal has to pass a transformer and
some safety/matching circuitry and still ought to be more accurate
than the on-board VCTCXO; the clock multiplexer
Hi,
I'm currently trying to take the output of a fft block and pipe it in a
tcp sink for (near) real-time processing outside of gnuradio.
My question is:
Assuming that I have vectors of n floats (the fft block outputs vectors
of floats or complexes, so I may need to pipe it to a
Hi Marcus,
Thanks for reply. Let me try to answer the questions.
Yes. The signal frequency shifted by +/- 5%.
The transfer burst is constant.
The frequency shift remains constant during a burst. So I estimate the
shift in the beginning of a burst, and fix the setting of demodulator and
On Wed, 23 Apr 2014 15:07:52 +0200
Antonio Petrolino apetrol...@mbigroup.it wrote:
Using an external 10 MHz reference clock, a square wave will offer the
best phase noise performance, but a sinusoid is acceptable.
The difference between the phase noise of a square wave and a sinus
input is
On Wed, 23 Apr 2014 17:37:44 +0200
Attila Kinali att...@kinali.ch wrote:
For all else. Using a good quartz oscillator is more than good enough
and you dont need to care about anything but having approximately the
right signal levels.
Let me give you a bit more information here.
According to
Hello, i'm new in gnuradio and i want to update all needed to program this
device the e110.
how it says in:
http://code.ettus.com/redmine/ettus/projects/usrpe1xx/wiki/FAQ#How-do-I-install-GNU-Radio-from-source
i have downloaded the latest image e1xx-003 and store to sd with the
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi Julian,
I've looked at that syntax error and it was fixed about two weeks ago,
When did you do your git clone?
Greetings,
Marcus
On 23.04.2014 18:02, julian wrote:
Hello, i'm new in gnuradio and i want to update all needed to
program this
Probably more than 2 weeks...
i will try again and i see if it happens again.
thanks for reply!.
--
View this message in context:
http://gnuradio.4.n7.nabble.com/installing-gnuradio-e110-tp47730p47732.html
Sent from the GnuRadio mailing list archive at Nabble.com.
Dear Mr. Müller,
I have 3 USRP1s (https://www.ettus.com/product/details/USRPPKG), each
contains one RFX2400 daughter board and one VERT2450 antenna. I found that
most people here use USRP N210 in their project.
I've installed GNU Radio 3.7.0 and made some flow graphs in GNU Radio with
provided
Hi all,
(Ubuntu 1304 gnuradio 3.7)
I want to test OFDM in gr_digital using tx_ofdm.grc and rx_ofdm.grc.
(simultaneously using usrp n200 devices)
Where are UHD source and sink in that flow g.?
Since I do not want to add them myself, I want to see how the original system
works.
Do you know
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi Nasi,
these Flow Graphs are simulation graphs; there is no hardware
sinks/source in there, obviously.
But you can easily make these flow graphs real hardware transmission
flow graphs.
You see the channel model/throttle block? That's where reality
Use the packet encoder block
Regards,
Vanush
On Thu, Apr 24, 2014 at 1:05 AM, Matthieu Imbert
matthieu.imb...@inria.frwrote:
Hi,
I'm currently trying to take the output of a fft block and pipe it in a
tcp sink for (near) real-time processing outside of gnuradio.
My question is:
Tom and I have put some effort into integrating Ice into OE so we can
support control port builds.
It will take a bit before I can get the updates needed into meta-oe, so
I have pushed a couple of branches for people to poke at. They will go
away once I can push the ice stuff into meta-sdr (which
On Apr 23, 2014, at 8:05, Matthieu Imbert matthieu.imb...@inria.fr wrote:
I'm currently trying to take the output of a fft block and pipe it in a tcp
sink for (near) real-time processing outside of gnuradio.
My question is:
Assuming that I have vectors of n floats (the fft block outputs
I wish to report my findings on the idea of pausing the flow graph, and
hope to get feedback from the experts on this list. I only started using
GNU radio last month so it is likely I didn't have enough experience to
understand it properly.
My understanding of the flow graph execution was a
I run the file ofdm_txrx.py from terminal using command ./ofdm_txrx.py
But I got errors !!! why ?
Thanks in advance ! Here is the output on terminal:
./ofdm_txrx_me.py: line 26:
OFDM Transmitter / Receiver hier blocks.
For simple configurations, no need to connect all the relevant OFDM
[quoting reordered for regularity]
On Apr 22, 2014, at 2:24, Alexandru Csete oz9...@gmail.com wrote:
On Tue, Apr 22, 2014 at 2:42 AM, Kevin Reid kpr...@switchb.org wrote:
On Apr 21, 2014, at 10:43, Tom Rondeau t...@trondeau.com wrote:
Seems like you could disconnect the entire flowgraph and
I just sent an email regarding the first meetup planning to those that
had expressed interest. If I missed you, please send me a email and
I'll add you to the email discussion.
--Eric
On 04/10/2014 11:26 AM, Eric Schneider wrote:
Is anyone doing a GnuRadio / SDR meetup in the Denver Area?
*
* Fourth-Annual *
* *
* New England Workshop on Software-Defined Radio*
* NEWSDR 2014 *
*
Hi Attila Kinali,
I don,t think it is the DC bias..as it is appearing at every center
frequency i provide and a DC bias is at zero frequency only..
On Wed, Apr 23, 2014 at 7:36 PM, sunkel soapy1...@msn.com wrote:
im pretty sure I did that.i set Generate Options as QT GUI.
if I didnt set
I believe there is a bug in file gr-channels/lib/flat_fader_impl.cc, line 67
according to Eq.4 of paper Improved Models for the Generation of Multiple
Uncorrelated Rayleigh Fading Waveforms published on IEEE COMMUNICATIONS
LETTERS, VOL. 6, NO. 6, JUNE 2002,
that line should be changed from:
Hi Tom,
Thanks for you reply.
I am wondering why the data stream ports of byte or integer 8 could be
disconnected by other ports.
Here is an example. The connecting code is commented out, but we can run
this program without getting a error.
#!/usr/bin/env python
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