On Sun, May 8, 2011 at 2:03 AM, yulong yang yyl@gmail.com wrote:
Thanks for reply.
My plan is to extend the usrp_spectrum_sense.py: grab its output data and
let a py script find the best available frequency in the data; then put this
frequency into the usrp2_source block of file
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On 05/07/2011 05:28 PM, David Bengtson wrote:
That's a pretty aggressive goal, to hit 5W over the USRP BW. To get
reasonable linearity, you're probably looking at something that draws
25W of DC power. An external Amp is probably off the shelf. For
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Hi,
that MIGHT be a stupid question, so please forgive me if it is :).
Is it possible/adviseable to connect an USRP2 to the PC via a (GigaBit -
of course) network switch? Or might that create problems / latencies
which would unreasonably impact the
On Thu, May 5, 2011 at 7:48 AM, Tom Rondeau trondeau1...@gmail.com wrote:
On Wed, May 4, 2011 at 6:40 PM, Arturo Rinaldi arty.n...@gmail.comwrote:
i have some issue in building gnuradio-3.3.0 on ubuntu 11.04 x32. In
particular I get errors in the building of the gr-usrp2 module, so i'm
How I understand of benchmark is that in the script it start the block, wait
for the packet to generate and then send it out. Do you mean this threading
wait? Is a block a thread?
So do you mean to import the spectrum_sense block in benchmark file and make
the transmitter wait when it dose
it seems every usrp2 must have a ethernet number and a MAC address, so I think
the connecting with switch might not work...?
--
Yang
Sent with Sparrow
On 2011年5月8日星期日 at 下午6:29, Stefan Gofferje wrote:
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Hi,
that MIGHT be a stupid question, so
I have an N210 (UHD) hooked to a switch. It works just fine. I think
the reason it is recommended to hook it directly to the computer doing
the processing is that a switch will have a limit as to how much data
can go through it at any time. So you probably shouldn't have 10 USRPs
hooked to the
On Sun, May 8, 2011 at 1:42 PM, Yang yyl@gmail.com wrote:
How I understand of benchmark is that in the script it start the block,
wait for the packet to generate and then send it out. Do you mean this
threading wait? Is a block a thread?
So do you mean to import the spectrum_sense block
Is there still a Variable Sink in GRC?
I've seen references to it on several threads and in the online GRC
documentation, but can't find it in GRC.
I'm using a fairly recent gnuradio GIT.
Thanks,
George
___
Discuss-gnuradio mailing list
Hi marc,
When i am typing the follwing thing
git branch --track next origin/next
git checkout next
its giving error that fatal:not a valid object name : 'origin next'
Marc Epard-3 wrote:
Yesterday I did a ground-up install of GNU Radio for UHD. Since all the
steps
Hi marc,
When i am typing the follwing thing
git branch --track next origin/next
git checkout next
its giving error that fatal:not a valid object name : 'origin next'
You might try:
http://www.sbrac.org/files/build-gnuradio
Which takes care of GIT-uploading the very
See the function probe block:
Periodically probe a function and set its value to this variable.
Set the values for block ID, function name, and function args
appropriately: Block ID should be the ID of another block in this flow
graph. Function name should be the name of a class method on that
On Sun, May 8, 2011 at 5:40 PM, sumitstop
sumit.ku...@research.iiit.ac.inwrote:
Hi marc,
When i am typing the follwing thing
git branch --track next origin/next
git checkout next
its giving error that fatal:not a valid object name : 'origin next'
There is currently no
What do you mean by this, exactly? GNURadio doesn't implement the SCA.
Cheers,
Ben
On Thu, May 5, 2011 at 5:24 AM, Jaco Meintjes jmeint...@csir.co.za wrote:
Hi,
Has anyone worked on JTRS (Joint Tactical Radios Sytems) SCA (Software
Communication Architecture) with GNURadio and UHD?
Hi Marcus thanks for the script a lot.
I saved it as build-gnuradio.sh
I ran that script but after pressing yes its giving following error which
I am unable to debug
./build-gnuradio.sh: 52: function not found
./build-gnuradio.sh:73:syntax error: } unexpected
Thanks
Marcus D. Leech wrote:
Thanks Tom.
Tom Rondeau wrote:
On Sun, May 8, 2011 at 5:40 PM, sumitstop
sumit.ku...@research.iiit.ac.inwrote:
Hi marc,
When i am typing the follwing thing
git branch --track next origin/next
git checkout next
its giving error that fatal:not a valid object name :
Hi Marcus thanks for the script a lot.
I saved it as build-gnuradio.sh
I ran that script but after pressing yes its giving following error which
I am unable to debug
./build-gnuradio.sh: 52: function not found
./build-gnuradio.sh:73:syntax error: } unexpected
Thanks
Marcus D. Leech wrote:
**Sorry for spamming.I thought I lost the thread :(
Hi Marcus thanks for the script a lot.
I saved it as build-gnuradio.sh
I ran that script but after pressing yes its giving following error which
I am unable to debug
./build-gnuradio.sh: 52: function not found
./build-gnuradio.sh:73:syntax
**Sorry for spamming.I thought I lost the thread :(
Hi Marcus thanks for the script a lot.
I saved it as build-gnuradio.sh
I ran that script but after pressing yes its giving following error which
I am unable to debug
./build-gnuradio.sh: 52: function not found
I was doing some experiments with multi-DDC support in recent UHD+USRP2
firmware.
I thought I'd start by a simple source-FFT Sink
I discovered rather by accident that if my FFT sinks had averaging
turned *OFF*, that even at
modest input bandwidths on my dual-centrino laptop, they'd get
Hi Marcus
Yes I did sh build-gnuradio.sh actually in the beginning.
But now its working with the modifications you said.
Its really too helpful script for first time users :)
Thanks
Marcus D. Leech wrote:
**Sorry for spamming.I thought I lost the thread :(
Hi Marcus thanks for the
Hi Marcus ,
Will the UHD and FPGA/FIRMWARE installed work for USRP2 devices as well ?
Because the installation is finished now and its saying about USRP1 only.
I have USRP2 motherboards.
Marcus D. Leech wrote:
**Sorry for spamming.I thought I lost the thread :(
Hi Marcus thanks for the
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On 05/08/2011 11:50 PM, Marcus D. Leech wrote:
I discovered rather by accident that if my FFT sinks had averaging
turned *OFF*, that even at
modest input bandwidths on my dual-centrino laptop, they'd get wedged,
even at relatively-low
FFT
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I have similar observations but without any hardware. The WX FFT totally
locks my Athlon 64 3800+, when displaying.
Just signal source - FFT sink.
BUT - only the WX FFT. The QT FFT seems rather reasonable in performance
demands.
Try turning down the display
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On 05/09/2011 12:44 AM, Marcus D. Leech wrote:
Try turning down the display rate in the WX FFT display--by default it's
set to 30 FPS. I generally run mine with
5 FPS or less, and turn on averaging, with an alpha of 0.1 or smaller.
Yeah, at
On Sun, May 8, 2011 at 10:40 PM, Stefan Gofferje stefan.goffe...@gmx.dewrote:
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On 05/08/2011 11:50 PM, Marcus D. Leech wrote:
I discovered rather by accident that if my FFT sinks had averaging
turned *OFF*, that even at
modest input
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On 05/09/2011 12:52 AM, Tom Rondeau wrote:
Are you saying you're using a gr_sig_source straight into the FFT sink?
You should probably put a gr_throttle block in there since you have
nothing else rate-limiting the flowgraph.
It's not a surprise
Dear Yang,
My master work is on this topic. I have a recent paper on this which as
below,
M. Adib Sarijari, Rozeha A. Rashid, N. Fisal, A. C. C. Lo, S. K. S. Yusof,
N. H. Mahalin.
http://trg.fke.utm.my/members/adib/publications/WWRF%202011-2(2).pdf Dynamic
Spectrum Access Using Cognitive Radio
Jaco,
I worked on a project about 3 years ago using experimental SDR and later
USRP1's to interoperate with military field radios such as the AN/PRC-113
SATCOM and SINCGARS.
However, our core C4ISR applications were using SCA. Our primary goal
is interoperability with multiple radio system
On Sat, May 7, 2011 at 7:04 AM, sumitstop
sumit.ku...@research.iiit.ac.in wrote:
Does XCVR2450 and RFX2400 have software controllable channel filter as in
DBSRX2 ?
XCVR2450 does, though with fewer bandwidth settings than DBSRX2,
RFX2400 does not have a software controlled analog channel filter
You're going to need several stages of amplification to get to 5+
watts out. It can all be done on a single board, but making it work
requires a fair amount of experience. The other issue is the various
regulatory bodies are going to frown on something like that if you try
to sell it.
You can't
Hi Nick,
I made the change you suggested and it worked, thanks a lot.
Mehmet.
2011/5/7, Nick Foster n...@ettus.com:
On Sat, 2011-05-07 at 15:53 +0100, Tom Rondeau wrote:
On Sat, May 7, 2011 at 3:44 PM, mehmet kabasakal
85kabasa...@gmail.com wrote:
Hi List,
I am trying to
http://ossie.wireless.vt.edu/trac/
On Thu, May 5, 2011 at 4:24 AM, Jaco Meintjes jmeint...@csir.co.za wrote:
Hi,
Has anyone worked on JTRS (Joint Tactical Radios Sytems) SCA (Software
Communication Architecture) with GNURadio and UHD?
Regards,
Jaco
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