On 07/01/2011 03:16 AM, Morgan Redfield wrote:
Hi,
I've been working on building a CSMA/CA MAC for the past couple of
weeks. I built it in Python, and used ofdm/tunnel.py as a guide. It's
working now, but I don't think it's very efficient. I ended up having
to relax a lot of timing
Hi all,
I was setting one of our N210 we got last week, while flushing the firmware
the procedure (normaly it takes one second) stopped this way:
USRP-N2XX found.
Flash size: 4194304
Sector size: 65536
Begin firmware write: this should take about 1 second...
Erasing 31744 bytes at 3145728
Hello,
How can I convert from complex to byte and byte to complex? There doesn't seem
to be any blocks available for this..
Regards,
OGLES
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No need, I figured the to/from char blocks work with byte..
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On 05/07/2011 10:27 AM, OG LESS wrote:
Hello,
How can I convert from complex to byte and byte to complex? There
doesn't seem to be any blocks available for this..
Regards,
OGLES
Use complex-to-float, followed by float-to-char
___
Hello Eddie,
I will try the same thing in a few weeks but using the USRP2 board. I hope
your work is going great. Do you mind if I contact you for advice?
Greetings.
Eduardo.
2011/6/24 Marcus D. Leech mle...@ripnet.com
**
On 06/24/2011 03:03 AM, Eddie Sun wrote:
Thanks for the reply, but
The device now doesn't reboot (all leds are off) and performing the recovery
procedure (keeping pressed the S2 while power cycling) doesn't lead to
anything,
all led are still off.
Strange. Were you (by some chance) streaming samples from the device
while re-programming? I ask because
No need, I figured the to/from char blocks work with byte..
From: discuss-gnuradio-requ...@gnu.org
Subject: Discuss-gnuradio Digest, Vol 103, Issue 27
To: discuss-gnuradio@gnu.org
Date: Sun, 26 Jun 2011 12:00:14 -0400
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On Jul 5, 2011, at 12:05 PM, Josh Blum wrote:
Strange. Were you (by some chance) streaming samples from the device
while re-programming? I ask because this has always been the cause of
this particular problem.
I'm pretty sure we had this happen without streaming, though in one instance
On 05/07/2011 12:31 PM, Johannes Schmitz wrote:
Based on different fft-sizes I am getting u0u0u0u0 output.
The strange thing is an unregular fft-size of 1088 doesnt produce
the error but fft-size 1024 does
also a smaller fft-size of 544 does produce the error.
So what is causing this kind of
On 07/05/2011 12:45 PM, Sai Shiva Kailaswar wrote:
Hi all,
I am sai shiva kailaswar, doing my Master's thesis using GNU Radio. As I am
new to GNU Radio, I need some basic information. I presently use Windows 7.
I want to install ubuntu in my laptop. Which versions of Ubuntu and GNU
radio
What's the intended usage for a Vector Sink? I have the output vector
(after complex-to-mag, and IIR filtering) of an FFT, and I want to
pick out specfic subsets of bins, and do stuff with them.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
Hi Shiva,
You can have any version of Ubuntu from 8.10 onwards.But I prefer 10.04 LTS.
After installing Ubuntu just run the following script and everything will be
done .i.e
installing of UHD as well as GnuRadio.
http://www.sbrac.org/files/build-gnuradio
after installing UHD and GnuRadio you
help with spectrum analyzer real time usrp2 spectrum sense
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Relatively simple flow-graph, not complete yet by any stretch of the
imagination.
It starts out innocuous enough, but really gets going after a while.
The RSS grows by about 150M/minute, the Virtual Size at a somewhat
slower pace. After a few minutes of running, its RSS has grown
enough
On Tue, Jul 5, 2011 at 6:13 PM, Marcus D. Leech mle...@ripnet.com wrote:
Relatively simple flow-graph, not complete yet by any stretch of the
imagination.
It starts out innocuous enough, but really gets going after a while. The
RSS grows by about 150M/minute, the Virtual Size at a somewhat
Hi Marcus,
What are you using the vector sink for, I can't find anything that
unloads it? If you look at the source code, this block continuously
calls push_back on a STL vector container (element size is the
GNURadio vector). So if nothing ever empties it, then it should
consume all the
Hi Marcus,
What are you using the vector sink for, I can't find anything that
unloads it? If you look at the source code, this block continuously
calls push_back on a STL vector container (element size is the
GNURadio vector). So if nothing ever empties it, then it should
consume all the
On Tue, Jul 5, 2011 at 6:58 PM, Marcus D. Leech mle...@ripnet.com wrote:
Hi Marcus,
What are you using the vector sink for, I can't find anything that unloads
it? If you look at the source code, this block continuously calls
push_back on a STL vector container (element size is the GNURadio
Have you tried the polyphase filter channelizer blocks?
--Colby
Not clear to me how to use them to effect non-uniformly-spaced channels.
Also, individual channels will have their own bandwidths.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
The vector sinks are not meant for production code, but for simple
tests scripts. If you need to continuously get data out of a flow
graph, the best approach is to use a message sink and have a thread
that reads the message queue until another message is posted, then you
do what you want
On Tue, Jul 5, 2011 at 7:50 PM, Marcus D. Leech mle...@ripnet.com wrote:
What's the intended usage for a Vector Sink? I have the output vector
(after complex-to-mag, and IIR filtering) of an FFT, and I want to
pick out specfic subsets of bins, and do stuff with them.
--
Marcus Leech
The GNU Radio conference is open for registration! You can find all of the
conference details as they come up here:
http://gnuradio.squarespace.com/gnu-radio-conference-2011/
Specifically, registration can be found:
http://gnuradio.squarespace.com/grc2011-registration/
Ettus Research, LLC will
On Tue, Jul 5, 2011 at 7:14 PM, Marcus D. Leech mle...@ripnet.com wrote:
**
Have you tried the polyphase filter channelizer blocks?
--Colby
Not clear to me how to use them to effect non-uniformly-spaced channels.
Also, individual channels will have their own bandwidths.
--
On Jul 5, 2011, at 10:50 PM, Colby Boyer wrote:
Not clear to me how to use them to effect non-uniformly-spaced channels.
Also, individual channels will have their own bandwidths.
See also: Polyphase Filter Banks For Unequal Channel Bandwidths And Arbitrary
Center Frequencies by fred harris
On Jul 5, 2011, at 10:50 PM, Colby Boyer wrote:
Not clear to me how to use them to effect non-uniformly-spaced channels. Also,
individual channels will have their own bandwidths.
See also: Polyphase Filter Banks For Unequal Channel Bandwidths And Arbitrary
Center Frequencies by fred harris
What sort of CPU are you using?
--Colby
On Tue, Jul 5, 2011 at 8:19 PM, Marcus D. Leech mle...@ripnet.com wrote:
On Jul 5, 2011, at 10:50 PM, Colby Boyer wrote:
Not clear to me how to use them to effect non-uniformly-spaced channels.
Also, individual channels will have their own
What sort of CPU are you using?
--Colby
AMD Phenom II X6 1055T, with 6GB of 1333MT/s memory. Rough ballpark
calculations show
me that even a 4096-bin FFT shouldn't take more than about
0.45GFlop/sec at 25Msps, and the
CPU is easily capable of at least 8GFlop/sec/core. So I'm not sure
why
I'm having trouble with a new install on OSX 10.6. I've done this enough
times on other OSX versions but I am drawing a blank.Can anyone help me
out? Can't find Core Audio libs?
Traceback (most recent call last):
File ./dial_tone.py, line 24, in module
from gnuradio import audio
I can borrow my lab mates N210 and see what kind of performance I can get
out of it on my T410 Thinkpad (i7 proc).
On Tue, Jul 5, 2011 at 9:12 PM, Marcus D. Leech mle...@ripnet.com wrote:
What sort of CPU are you using?
--Colby
AMD Phenom II X6 1055T, with 6GB of 1333MT/s memory. Rough
this will resolve that errror
http://www.updatelee.com/src/gnuradio_osx.patch
it wont fix the real problem though, your going to get audiounitrender
errors, unfortunately I dont have the resources right now to resolve it.
Hopefully in August I'll be able to take a look at it. Even more
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