It really does need to happen on one sample at a time - at least assuming I
use the same algorithm I'm using now. I am pretty much using the method
Sylvain suggests. The rotation is one operation of many inside a block -
ie. many rotations happen per call to work(), but one rotation per input
On Tue, May 26, 2015 at 7:37 PM, John Malsbury jmalsbury.perso...@gmail.com
wrote:
I have a complex phase rotation function that uses a pre-generated
sin/cos LUT and some basic multiple/adds.
As it turns out, the rotation calc, which uses straight C/C++ math is
still the bottleneck in a
Dear List,
please note that the programme of the SDRA-2015 is now complete.
http://www.sdra-2015.de/pages/programme.html
We have also finalized the timetable now.
I'll be happy to welcome many of you at Friedrichshafen! The SDRA will
take place on June 27.
vy73
markus
dl8rds
Hi,
I guess I should respond, as I'm responsible for the blog posting that you
linked.
I tested the relative phase stability using amplified noise that was fed
via a splitter onto the two dongles. I cross-correlated the noise and found
that there was a deterministic frequency difference between
On Thu, May 28, 2015 at 1:52 PM, Douglas Geiger
doug.gei...@bioradiation.net wrote:
To follow-up on Sylvain's questions: is the restriction really on doing
single-sample rotation (because of some intermediate calculation to generate
the phase advance for the next sample), or on the alignment?
I have a question concerning connecting two DVB-T dongles on the same clock
source for interferometric (or passive radar) measurements, as described at
http://kaira.sgo.fi/2013/09/16-dual-channel-coherent-digital.html
I have assembled the same system with one dongle used as oscillator on a 28.8
Thanks for your reply. Indeed designing phase coherent receivers is my daily
job activity (partly), but the fun of hacking DVB-T receivers is to find ways
of using
these for applications they were never intended for. I have indeed read your
posts
concerning the difficulties in reproducing
This is largely because this $10.00-apiece hardware was never designed
for this class of application. When you're doings things that require
phase-coherence, you have to design your radios to support it.
There are at least two PLLs involved here--one on the R820T chip, and
another, as far as
Or is there a way to make sure that the in-buffer gets updated multiple
times within the same work call?
Will placing the work function inside a while 1 do the trick? But I guess
the issue with that is, as long as data is available, the scheduler calls
work function again and again anyway.
I'm
On 05/28/2015 07:31 PM, Gerome Jan L wrote:
I'm installing gnuradio again on my ubuntu 14.04 installed in VMware
11.1.0. I tried it several times, but I can't seem to pass this step:
Fetching various packages (Gnu Radio, UHD, gr-osmosdr, gr-iqbal, etc)
via the Internet
=== THIS MAY TAKE
I'm installing gnuradio again on my ubuntu 14.04 installed in VMware
11.1.0. I tried it several times, but I can't seem to pass this step:
Fetching various packages (Gnu Radio, UHD, gr-osmosdr, gr-iqbal, etc)
via the Internet
=== THIS MAY TAKE QUITE SOME TIME =
Fetching Gnu Radio via
The fixes to Ubuntu installed IPV6 which basically kills the network opens.
Disable it and reboot.
73,
Alan - W6ARH
From: discuss-gnuradio-bounces+alan.r.hill=gmail@gnu.org
[mailto:discuss-gnuradio-bounces+alan.r.hill=gmail@gnu.org] On Behalf Of
Gerome Jan L
Sent: Thursday,
Check the internet for suggestions on how to cure slow internet connections in
Ubuntu. You do not have to be using it to have it active.
Alan
From: Gerome Jan L [mailto:geromejanlla...@gmail.com]
Sent: Thursday, May 28, 2015 5:10 PM
To: Silverfox
Cc: discuss-gnuradio@gnu.org
Subject:
What do you mean IPv6? I'm using IPv4. Sorry, but I don't quiet get your
suggestion. Please elaborate. Thanks.
*Gerome Jan M. Llames *
Engineering Research and Development for Technology (ERDT) Scholar
University of San Carlos - Technological Campus
Nasipit Talamban, Cebu City, Philippines, 6000
Hi Richard,
I'll pitch `perf` here (you're on Ubuntu, so it's in the linux-tools,
probably).
Build GNU Radio with the debugging symbols enabled, i.e. call CMake with
the build type specified:
cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo ..
Then, allow normal users to sniff around processes' calls:
Hi all guys,
I encounter following error when running my test:
ImportError: /usr/local/lib/libgnuradio-TPMS.so: undefined symbol:
_ZN2gr6blocks14file_sink_baseC2EPKcb
There was a similar problem explained here:
http://stackoverflow.com/questions/28859517/gnuradio-importerror-undefined-symbol
I
Hey GNU Radio community!
Thanks for choosing my project for this year's ESA Summer of Code in
Space. I will implement a POLAR code encoder decoder chain as well as
channel construction.
I would like to introduce myself a bit today.
I am a Master degree student at Karlsruhe Institute of
On 27.05.2015 18:30, Marcus D. Leech wrote:
On 05/27/2015 05:52 PM, Carl Olsson wrote:
Hi all,
I use a file sink block in my flow graph to record samples from a USRP
N210. I start the flow graph and then after some time starts to record
using the file sink block by switching it on using a
Hi John,
I have a complex phase rotation function that uses a pre-generated sin/cos
LUT and some basic multiple/adds.
As it turns out, the rotation calc, which uses straight C/C++ math is
still the bottleneck in a demod.
I don't quite get what you need ...
Rotating a single sample by a
Okay.
Tried this, then deleted the xml file before attempting to make again
without it.
Got the following error when re-making (the line with the xml file had a
destination which I had thought was just for that file)
What do I need to do to fix this?
Thanks,
- John
CMake Error at
On Thu, May 28, 2015 at 9:17 AM, John Murphy
mr.john.joseph.mur...@gmail.com wrote:
Tried this, then deleted the xml file before attempting to make again
without it.
Got the following error when re-making (the line with the xml file had a
destination which I had thought was just for that
Nevermind, figured out (by looking at another module, fortunately had one
handy although one could probably find such on git somewhere now that I
think about it instead of hitting the panic button)
for posterity, you just have to add the following to the end of the line
listing the last xml file
On Thu, May 28, 2015 at 12:05 AM, Marcus Müller marcus.muel...@ettus.com
wrote:
I'll pitch `perf` here (you're on Ubuntu, so it's in the linux-tools,
probably).
I'm pretty sure the issue is as Murray Thomson described above. We've had
to optimize this area in the past in GRC.
--
Hello again,
I tried to add a C++ noblock to my OOT module. In this particular case I
wanted to provide a reusable n of m counter class (for non-signal stuff
to count) in C++ code that I could use within various C++ blocks in the
module. And I did not know of a better way to manage that with the
On Thu, May 28, 2015 at 8:26 AM, John Murphy
mr.john.joseph.mur...@gmail.com wrote:
Anyhow, it unexpectedly generated an xml file to import the non-block into
GRC.
Is there a best way to just remove that xml file without causing other
issues?
First, do a 'make uninstall' from your build
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