I'm not exactly an expert on this, but correct values
for the DVB-S trellis encoder (1/2 rate, G1(X) = 121,
G2(Y) = 91) are:
1, 2, (121, 91)
My DVB-S transmitter repository is here:
http://github.com/drmpeg/gr-dvbs
Ron
On 4/27/2014 11:12 PM, siva kumar wrote:
Dear,
Could you please let me kn
Gayathri,
You can find IIP2, IIP3, and NF data for the N210 with WBX (on the receive
side) here:
http://files.ettus.com/performance_data/wbx/wbx_imd_and_nf_vs_gain.pdf
Please let me know if you have any questions about the data.
Thanks,
Matt
On Wed, Apr 16, 2014 at 10:22 AM, Gayathri Rama
Can anybody explain to me the following parameters of NBFM block in GRC:
Audio rate
Quadrature rate
Tau
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Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
When I looked into the attached graphical flowgraph in the first email, the
signal was multiplied by zero (constant multiplier) before feeding into
file sink and audio sink. In this case what you get was probably amplified
noise.
Was it zero or something else?
On Fri, Apr 25, 2014 at 11:54 PM, M
This, is a squelch, variable changes between 0 and positive gain value.
--
public PGP key
http://pastebin.com/dqZqgyVE
On Mon, Apr 28, 2014 at 1:24 PM, Activecat wrote:
> When I looked into the attached graphical flowgraph in the first email,
> the signal was multiplied by zero (constant multi
Hi
I am trying to generate an LFM signal using GNU radio and USRP but I am not
sure about the interpretation of Sensitivity parameter in Freq Modulation block
that what are its units, what is the possible range of values and how does it
effect the characteristics of modulated waveform/signal etc
It needed to be said, but my only goal is to
ACCEPT AND LOVE 10GigE until and unless you demand the low latency afforded
by the PCIe interface. The things I am working on demand that we meet the
tight timing requirements of open specification waveforms. PCIe was
required. The x3x0 series are m
Hey Siva,
in [1] I parameterized the trellis module for a rate 1/3 code as used in
LTE. Maybe that helps. I put a lot of comments in.
Besides if you tell us what you want to achieve exactly, someone might
give more specific hints.
happy hacking
Johannes
[1] https://github.com/kit-cel/gr-lte/
On Sun, Apr 27, 2014 at 1:37 PM, Stephen Andrew wrote:
> Hello,
>
> I'm getting the following error when trying to run a gnuradio graph with
> USRP in windows:
>
> File "c:\Program
> Files\gnuradio\lib\site-packages\gnuradio\uhd\uhd_swig.py", line 22, in
> swig_import_helper
>
> _mod = imp.lo
Thanks for responding. No, everything is from the master branch, other than
I split the ofdm_loopback script into tx and rx scripts but the blocks went
unchanged.
Jon
On Sat, Apr 26, 2014 at 12:10 PM, Martin Braun wrote:
> On 04/21/2014 09:02 PM, Jonathan Fox wrote:
> > Hey list, another OFDM q
On Fri, Apr 25, 2014 at 7:06 PM, Bolin Hsu wrote:
> Thanks for suggestions of Vanush, Marcus, and Tom. I am happy to report
> that I was able to reduced the wasted samples from about 30k to about 1.5k.
>
> Here's what I tried:
>
> (1) #define GR_FIXED_BUFFER_SIZE 2048 in flat_flowgraph.cc. This g
It's a standard 10GBe card that should be supported by the ixgbe driver that has had kernel support for many many years.
on Apr 28, 2014, Lapointe, Benjamin - 1008 - MITLL via USRP-users wrote:
Does the 10 Gigabit Ethernet PCI-express adapter card sold by Ettus work with Ubuntu 14.04 LTS?
Does the 10 Gigabit Ethernet PCI-express adapter card sold by Ettus work with
Ubuntu 14.04 LTS? From the previous discussion, it sounds like the PCIe
interface does not work with the new kernel, but that 10GigE might work.
-Ben
From: discuss-gnuradio-bounces+blapointe=ll.mit@gnu.org
[ma
I got it complied and working. The key was to install Cython. It is probably
worthwhile to add it to the dependency list.
Alan
From: Nick Foster [mailto:bistrom...@gmail.com]
Sent: Sunday, April 27, 2014 4:30 PM
To: Silverfox
Subject: Re: [Discuss-gnuradio] gr-air-modes compilation
'Quadrature Rate' is the rate that samples come into the block.
'Audio Rate' is the rate that samples are sent to your sound card.
'Tau' is described in the following link:
http://gnuradio.4.n7.nabble.com/preemph-time-constant-td26659.html
Mike
--
Mike Jameson M0MIK BSc MIET
Email: m...@scanoo
That's very strange. Cython isn't required for either PyZMQ or
gr-air-modes. My guess is you have multiple Python versions installed, and
PyZMQ got installed to a version that isn't the one gr-air-modes found.
Whatever works! =)
--n
On Mon, Apr 28, 2014 at 9:10 AM, Silverfox wrote:
> I got it
Ben,
That card is very mainstream and uses an Intel driver so I'd expect good
support from the get go on 14.04.
-Ian
On Apr 28, 2014, at 7:39 AM, "Lapointe, Benjamin - 1008 - MITLL via USRP-users"
wrote:
> Does the 10 Gigabit Ethernet PCI-express adapter card sold by Ettus work with
> Ubunt
Hi all -
Just to clarify, it isn't the *version of OS* that matters, but rather
the *version
of the kernel provided by the OS*, that matters.
At the top of our instructions for installing the USRP RIO kernel module,
it lists the maximum kernel version we currently support:
"*NOTE: The latest sup
gr-air-modes did not require it but it was needed to compile libzmq. I'll
check but I am sure all I have is Python 2.7.
Cheers,
Alan
From: Nick Foster [mailto:bistrom...@gmail.com]
Sent: Monday, April 28, 2014 9:13 AM
To: Silverfox
Cc: GNURadio Discussion List
Subject: Re: [Discuss-g
I suspect that 10GigE works just fine. It is PCIe and PCIe express that
will have the "unique to a kernel release" issues.
Again, as I said before, if you have no idea why you would need PCIe, DON'T
DO IT. Use 10 GigE.
On Mon, Apr 28, 2014 at 10:39 AM, Lapointe, Benjamin - 1008 - MITLL <
blapo
Thank you Tom,
I've installed gr-mac and try on running some flow graph.
Some blocks there give output as message, but I want to take complex
samples. How could I convert from message to complex?
I used Message Source for that purpose but this error appears:
*NameError: global name 'blocks_message
Dear List,
I'm beginning with gr-mac. (https://github.com/jmalsbury/gr-mac). I need
complex/float data to process but some blocks give message as output (*Tagged
Stream to PDU*). I did try using *Message Source* to convert form message
to complex but there was error with the ID:
*NameError: global
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