Continueing with http://www.ruby-forum.com/topic/1983866, and
http://www.ruby-forum.com/topic/1991680
I am trying to append preamble to a signal so that RX can recognize it and
see a start position of data exactly.
I roughly draw what I thought.
[image: desired_signal.jpg]
(
http://dl.dropbox.com/
Hi Marcus I have used your script.Its superb! I just wanted to build step
by step :)
Btw I just got all things build properly.Actually I put mb-gcc in the home
folder and set the path variables accordingly.And it worked :)
Marcus D. Leech wrote:
>
> On 06/23/2011 06:50 PM, sumitstop wrote:
Hi Morgan...actually I din't installed UHD before gnuradio.Now when I
installed UHD ,my problem seems to be solved now :) gr-uhd is built now.
Thanks
Morgan Redfield-2 wrote:
>
> Did you install UHD before you built gnuradio?
>
> You can follow the build guide here:
> http://www.ettus.com/uhd_
back when i had a usrp i setup an adjustable dual channel fm tuner with freq
translating filters in grc. its setup for usrp1 so i could not capture the
20mhz wide broadcast band. hope it helps
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oops heres the aatchment
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usrp_wbfm_94-102_dual.grc
Description: Binary data
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On Thu, Jun 23, 2011 at 8:32 PM, Marcus D. Leech wrote:
> I'm working on a multi-channel radiometer, based on USRP2 with the
> dual-DDC feature.
>
> I'm trying to come up with channelizing structure that won't overwhelm
> my CPU--I'm using
> a 6-core Phenom II 1055T, with 4GB of 1333MHz memory.
anyone?? :)
--- On Wed, 6/22/11, dave k wrote:
> From: dave k
> Subject: pci composite / tv tuner cards as gnuradio source?
> To: "gnuradio"
> Date: Wednesday, June 22, 2011, 4:22 AM
> I searched and read about bt878 and
> possibly the pcHdtv card being used as a gnuradio
> source. Can anyone
On Thu, Jun 23, 2011 at 12:44 PM, Patrik Tast wrote:
> **
> FYI
>
> A snip of as seen from space of severe weather over Scandinvia.
> Using USRP1 + TVRX and 1.7 GHz downconverter LO 1557 MHz, 1.2 m dish
> (primefocus f/D=0.40) + tracking support.
> All stuff are lowcost and homebrew (alpha-proto).
I'm working on a multi-channel radiometer, based on USRP2 with the
dual-DDC feature.
I'm trying to come up with channelizing structure that won't overwhelm
my CPU--I'm using
a 6-core Phenom II 1055T, with 4GB of 1333MHz memory.
I need to be able to carve-off 4 channels, with widths between 100K
On 06/23/2011 02:48 PM, Gaetano Mendola wrote:
Hi all,
running my application with valgrind it complained about some
uninitialized values.
Patch attached.
Is it possible these are false positives from Valgrind? It looks like it
is possible the variales you are writing zeros to are filled ou
On 06/23/2011 06:50 PM, sumitstop wrote:
I am using ubuntu Lucid 10.04 LTS.
Did the following thing
Step-1 Installed all the dependencies for ubuntu Lucid 10.04 from the script
given here
http://gnuradio.org/redmine/projects/gnuradio/wiki/UbuntuInstall
step-2 git clone http://gnuradio.org/git/
On Thu, Jun 23, 2011 at 4:11 PM, Nick Foster wrote:
>
> >
> >
> >
> >
> > Where should I look for the API to tag samples on the USRP?
>
> Tagging in this case has nothing to do with the USRP and everything to
> do with Gnuradio. Take a look at the burst_tagger in
> gnuradio-core/src/lib/general/g
>
>
>
>
> Where should I look for the API to tag samples on the USRP?
Tagging in this case has nothing to do with the USRP and everything to
do with Gnuradio. Take a look at the burst_tagger in
gnuradio-core/src/lib/general/gr_burst_tagger.cc for an example.
The Mode S decoder I wro
Did you install UHD before you built gnuradio?
You can follow the build guide here:
http://www.ettus.com/uhd_docs/manual/html/build.html
Morgan
On Thu, Jun 23, 2011 at 3:50 PM, sumitstop
wrote:
>
> I am using ubuntu Lucid 10.04 LTS.
>
> Did the following thing
>
> Step-1 Installed all the depen
I am using ubuntu Lucid 10.04 LTS.
Did the following thing
Step-1 Installed all the dependencies for ubuntu Lucid 10.04 from the script
given here
http://gnuradio.org/redmine/projects/gnuradio/wiki/UbuntuInstall
step-2 git clone http://gnuradio.org/git/gnuradio.git
then
step-3 git clone http:/
Continueing with http://www.ruby-forum.com/topic/1983866,
I have planned to append a preamble before an actual signal and turn RX on
earlier than TX.
Then RX will receive a signal like below:
|---RX turn on--|---TX turn on-
(---trash signal---)(---preamble---)(---
On 23/06/2011 3:03 PM, Colby Boyer wrote:
Or operate your receiver at absolute zero so there is no thermal noise? :D
Infinite SNR. Must have :-)
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On Fri, 2011-06-24 at 04:00 +0900, Songsong Gee wrote:
> Ok. First of all, I'd like to run a code like below (pseudo):
> for i = 1 to 200 // preamble duration
> amp = 32767
> end for
> amp = 100
Like I said earlier, this is unlikely to be a good approach to
synchronizing with a preamble.
>
> N
Or operate your receiver at absolute zero so there is no thermal noise? :D
On a more serious note, how I do preamble detection is the following:
* Figure out the sample sequence of your TX'ed preamble sequence, use this
as a match filter.
* Tag the magnitude of the match filter and run through th
Ok. First of all, I'd like to run a code like below (pseudo):
for i = 1 to 200 // preamble duration
amp = 32767
end for
amp = 100
Next, how many baseband samples are generated by DPSK or Frequency mod block
for a single symbol input
Composed with Android (Galaxys)
2011. 6. 24. 오전 3:31에 "Nick Fo
On 23/06/2011 2:31 PM, Nick Foster wrote:
Why would you set the amplitude of the preamble differently than the
actual data?
--n
In the hopelessly-naive assumption that the preamble can be made to be
"perfect" through brute-force transmit power.
Like you observed earlier, correlation is the c
On Fri, 2011-06-24 at 01:17 +0900, Songsong Gee wrote:
> Continueing with http://www.ruby-forum.com/topic/1983866,
>
>
> I have planned to append a preamble before an actual signal and turn
> RX on earlier than TX.
>
>
> Then RX will receive a signal like below:
> |---RX turn on--|-
I'm a bit confused. What exactly are you trying to do?
On Thu, Jun 23, 2011 at 9:17 AM, Songsong Gee wrote:
> Continueing with http://www.ruby-forum.com/topic/1983866,
>
> I have planned to append a preamble before an actual signal and turn RX on
> earlier than TX.
>
> Then RX will receive a sign
FYI
A snip of as seen from space of severe weather over Scandinvia.
Using USRP1 + TVRX and 1.7 GHz downconverter LO 1557 MHz, 1.2 m dish
(primefocus f/D=0.40) + tracking support.
All stuff are lowcost and homebrew (alpha-proto). We can only improve
http://www.poes-weather.com/~patrik/1.7GHz
The first thing to look at is the list of the GNU Radio dependencies (check
the wiki). All the ones related to the gnuradio core would need to be
ported. . .It probably will not be a trivial task.
--Colby
On Thu, Jun 23, 2011 at 1:36 AM, Amanullah wrote:
> Hi
>
> ** **
>
> I want to port th
On 06/23/2011 07:56 AM, Jide Julius wrote:
> Hi All,
> I am using 3 USRP2. The 3 FPGA and firmware were installed using the same
> procedures. The installation was successful and I was able to ping the 3
> USRP2 devices. However, when I run the GNU Radio Companion, it was able to
> identify only
On Thu, Jun 23, 2011 at 5:32 AM, Ralf Wierse wrote:
>> -Original Message-
>> From: Jason Abele [mailto:ja...@ettus.com]
>> Sent: Thursday, June 23, 2011 1:04 PM
>> To: Ralf Wierse
>> Cc: discuss-gnuradio Discussion Group
>> Subject: Re: [Discuss-gnuradio] E100 - No devices found for ->
On 06/23/2011 03:16 AM, Ralf Wierse wrote:
> OK, first simple reason discovered.
> UHD can only be used for one device - either UHD_usrp_sink or source.
>
> How can UHD be used for both devices in parallel?
>
Sorry, Its a known bug related to opening twice. Its fixed on the next
branch. Soluti
On 23/06/2011 8:32 AM, Ralf Wierse wrote:
Hi Jason,
thanks but I am a little confused.
I would say it is in the same process since I have sink and source in the same
GRC setup. The failure shows up when the generated python script instantiates an
UHD devices the second time as far as I understan
Hi All,
I am using 3 USRP2. The 3 FPGA and firmware were installed using the same
procedures. The installation was successful and I was able to ping the 3
USRP2 devices. However, when I run the GNU Radio Companion, it was able to
identify only one of them. The other 2 were not recognised. The warni
Hi all,
running my application with valgrind it complained about some
uninitialized values.
Patch attached.
Regards
Gaetano Mendola
--
cpp-today.blogspot.com
diff --git a/host/lib/transport/super_send_packet_handler.hpp
b/host/lib/transport/super_send_packet_handler.hpp
index 8ebc264..2aedd75
> -Original Message-
> From: Jason Abele [mailto:ja...@ettus.com]
> Sent: Thursday, June 23, 2011 1:04 PM
> To: Ralf Wierse
> Cc: discuss-gnuradio Discussion Group
> Subject: Re: [Discuss-gnuradio] E100 - No devices found for ->
>
>
> On Thu, Jun 23, 2011 at 3:16 AM, Ralf Wierse
>
> -Original Message-
> From: Jason Abele [mailto:ja...@ettus.com]
> Sent: Thursday, June 23, 2011 1:04 PM
> To: Ralf Wierse
> Cc: discuss-gnuradio Discussion Group
> Subject: Re: [Discuss-gnuradio] E100 - No devices found for ->
>
>
> On Thu, Jun 23, 2011 at 3:16 AM, Ralf Wierse
>
On Thu, Jun 23, 2011 at 12:18 AM, sumitstop wrote:
>
> Hi Tom It worked finally.After 2-3 link failure messages it got installed.
> I saw some posts in the forum that gnuradio.org is down hence thought that
> it might be relate to that.
The website has been continually up and functioning since
On Thu, Jun 23, 2011 at 3:16 AM, Ralf Wierse wrote:
> OK, first simple reason discovered.
> UHD can only be used for one device - either UHD_usrp_sink or source.
>
> How can UHD be used for both devices in parallel?
You have to access both source and sink from the same process, but
then it is pos
OK, first simple reason discovered.
UHD can only be used for one device - either UHD_usrp_sink or source.
How can UHD be used for both devices in parallel?
Thanks,
Ralf
> -Original Message-
> From: discuss-gnuradio-bounces+r.wierse=brunel...@gnu.org
> [mailto:discuss-gnuradio-bounces+r.
Hi
I want to port the GNU radio code base to TTA processor architecture. The
processor is programmed on an FPGA. The compiler for TTA is TCE which
supports C and C++.
I have some initial questions about feasibility of such project. Is it
possible to port GNU radio code to an embedded process
Hi all,
we are new with E100.
we managed to use UHD:USRP_Source without further configuration and display
it on QT_GUI_SINK.
we don't manage with UHD:USRP_Sink without further configuration:
File "/usr/local/lib/python2.6/site-packages/gnuradio/uhd/uhd_swig.py", line
1854, in usrp_sink
ret
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