Hi Jason thanks for the feedback.
Sorry about the code, it was generated mostly via Grc. I've cleaned it up,
should make much more sense now:
http://users.tpg.com.au/marcinw//qpskTest.py
I've tried using the available DQPSK blocks as you suggested, but i get the
same result. i.e with 108 as the
this would be similar to 802.11b's PHY at 1Mbps, except it uses the barker
sequence as opposed to the sequence you mention. It spreads a BPSK signal
using the barker sequence.
You can take a look at the BBN 802.11b code in CGRAN to see how they
implement this:
https://www.cgran.org/browser/projec
Hi,
If I want to transmit a signal which is DSSS spread using BPSK. Is it
correct for me to first digitally spread the incoming data bits and then
apply BPSK before sending it to the USRP or should I first convert the
signal to BPSK and then multiply the output of the BPSK modulator with the
PN seq
On Wed, Apr 28, 2010 at 12:07:31PM +0800, rui qian wrote:
> Dear all
> I have installed hydra-0.4 and gnuradio3.2.2 on two different machines.
> and I use tunnel.py to test gnuradio3.2.2, This allows two machines to talk.
> When I run the command:
> # hydra-tunnel /opt/hydra/gr/share/hydra/sconf-1
Dear all
I have installed hydra-0.4 and gnuradio3.2.2 on two different machines.
and I use tunnel.py to test gnuradio3.2.2, This allows two machines to talk.
When I run the command:
# hydra-tunnel /opt/hydra/gr/share/hydra/sconf-1
to test hydra-0.4, it is executed successfully without error and
war
Earlier, I had asked if there was any combination of parameters to
gr_oscope that would cause it to
act like a strip-chart, with new samples entering (at a low rate) on
one end, and the chart updated on
every sample, with samples slowly working their way to the other end,
and thence to oblivion.
Is there some bench mark I can run to test the USB and CPU loading ?
Apparently there is a problem with usrp_benchmark_sub.py .
I ran the wideband FM receiver flow graph in GRC and took some screen shots.
Any suggestions ??
Bill
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Discuss-gnu
Matt Ettus wrote:
On 04/27/2010 05:29 PM, Kyle Zhou wrote:
So far, I have tried another two computers with ubuntu 9.10 fresh
installation.
but exactly the same problem.
Is anyone having the same issue on WBX?
Kyle
We are looking into this. But why do you need to run that program?
If you re
On 04/27/2010 05:29 PM, Kyle Zhou wrote:
So far, I have tried another two computers with ubuntu 9.10 fresh
installation.
but exactly the same problem.
Is anyone having the same issue on WBX?
Kyle
We are looking into this. But why do you need to run that program? If
you really need to, it wil
On 04/27/2010 06:07 PM, bin zan wrote:
Thanks Devin and Matt.
From your reply can I say if I don't use AGC and with a fixed value of
gain, then I can calculate the RSSI value.
Yes
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Discuss-gnuradio@gnu.org
http://li
Thanks Devin and Matt.
>From your reply can I say if I don't use AGC and with a fixed value of gain,
then I can calculate the RSSI value.
Bin Zan
On Tue, Apr 27, 2010 at 3:26 PM, devin kelly wrote:
> Hello Bin,
>
> My group considered doing this about 4-5 months ago. Things may have
> changed
On 04/27/2010 11:32 PM, William Pretty Security Inc wrote:
>
> As promised. Here's the system I went with: Sony VAIO model
> VCPF111FDB from Best Buy.
>
>
>
> 500GB hard drive
>
> 1.6GHz CPU (not sure about boost to 2.68GHz mode?)
>
> Intel Quad core i7 720QM
>
> RAM 4GB (Not upgradable*)
>
What's a bit funny is that I initially followed the directions at
http://gnuradio.org/redmine/wiki/gnuradio/DebianPackages, which includes:
$ sudo aptitude install gnuradio gnuradio-companion
Perhaps I didn't see an error message but I'm sure I ran that command:)
v/r
Rob
Johnathan Corgan-2 wro
As promised. Here's the system I went with: Sony VAIO model VCPF111FDB
from Best Buy.
500GB hard drive
1.6GHz CPU (not sure about boost to 2.68GHz mode?)
Intel Quad core i7 720QM
RAM 4GB (Not upgradable*)
3 USB ports (1 eSATA/USB port)
You can read the rest for your self J
Bo
So far, I have tried another two computers with ubuntu 9.10 fresh installation.
but exactly the same problem.
Is anyone having the same issue on WBX?
Kyle
Kyle Zhou wrote:
In order to use WBX, I install git repo on my ubuntu 9.04.
When I do usrp_benchmark_usb.py, it goes well with 2MB test, but
On Tue, Apr 27, 2010 at 01:55:55PM -0700, Sam Bretheim wrote:
> Marcus D. Leech wrote:
> >On 04/26/2010 05:16 PM, Josh Blum wrote:
> >> The rx and tx data packets are samples encapsulated in vrt headers for
> >> IF data: http://www.digitalif.org/
> >Gosh. Too bad they want for a copy of the s
Hi;
I basically followed the wiki as before .
I must have got an extra space in there or something L
Now I can post my step-by-step document on how to install Gnuradio / Ubuntu
for RF engineers and Windows Xp users J
I'm both so I can say that !!
I hope it will be of some help, and
On 04/27/2010 09:04 AM, bin zan wrote:
Hello,
Anyone know if it is correct to roughly estimate RSSI
information from I/Q values. For example is it correct to say RSSI of a
message is equal to 10log10(I^2-Q^2). Otherwise, what is the correct way
to obtain RSSI value in gnuradio?
You wou
2010/4/27 jlsdxw :
> Hi,
> Recently I have been testing the examples of Gnu Radio. And I came across
> some problems. When I use a USRP with two daughterboards, I found that the
> two daughterboards can not trismit or receive at the same time. They can
> only work as one transmitter and one recei
Marcus D. Leech wrote:
On 04/26/2010 05:16 PM, Josh Blum wrote:
> The rx and tx data packets are samples encapsulated in vrt headers for
> IF data: http://www.digitalif.org/
Gosh. Too bad they want for a copy of the standard. Bleerg.
As long as you don't mind using a draft version of
Current rx socket buffer size: 42080
Adjust max rx socket buffer size (linux only):
sysctl -w net.core.rmem_max=VALUE
Using: XCVR2450 RX (0x0061)
Using: XCVR2450 TX (0x0060)
I tried some different values in
set_recv_buff_size(size_t(xxx)); //some big number!,
3.7e6 still works as the "big"
On Mon, Apr 26, 2010 at 8:57 PM, wrote:
> Thank you for you answer. Do you mean I can not achieve the goal by
> modifying its softare code beause of hardware restriction ? I have nothing to
> do except using more usrps?Thank you!
You cannot use two instances to tunnel.py to create two network
Hello Bin,
My group considered doing this about 4-5 months ago. Things may have
changed now, but at that time it was not possible (or at least not straight
forward to me) to get the gain from the AGC.
>From my understanding, the AGC (automatic gain control) makes getting RSSI
readings difficult
Hello everyone,
Tom, thanks for that, that was a good start for me, but I'm still am having
the problems.
This is how I make my modulator for dqpsk, the way I make the modulator for
dbpsk is mostly the same. Tom, at first I thought you meant I might need to
change the samples_per_symbol paramt
Am 27.04.2010 um 18:03 schrieb Josh Blum:
>
>>
>> I would really like to use the USRP2 with my MacBook. My first test with the
>> driver yields the following result:
>>
>>> $ uhd_find_devices
>>> --
>>> -- UHD Device 0
>>> --
On Tue, Apr 27, 2010 at 11:49 AM, marcin_w wrote:
>
> Hi All,
>
> I have been battling with this for the last week and still have not found a
> solution.
>
> I've include some more info for anyone who can help.
>> Does anyone have any idea what is going wrong here?
>> I've included my python s
Hi All,
I have been battling with this for the last week and still have not found a
solution.
I've include some more info for anyone who can help.
USRP1
Daughterboard: RFX2400 [using TX/RX port for Transmission & RX2 port for
Reception]
Carrier Freq: 2.43 GHz
I've also included the constellati
Hello,
Anyone know if it is correct to roughly estimate RSSI information
from I/Q values. For example is it correct to say RSSI of a message is equal
to 10log10(I^2-Q^2). Otherwise, what is the correct way to obtain RSSI value
in gnuradio?
Thanks,
Bin
Winlab
I would really like to use the USRP2 with my MacBook. My first test with the
driver yields the following result:
$ uhd_find_devices
--
-- UHD Device 0
--
name: USRP2
addr: 192.168.10.2
Error: No
On Tue, 2010-04-27 at 08:57 -0700, William Pretty Security Inc wrote:
> Hi All;
>
>
>
> Well I picked up my new system at Best Buy. (details later) I
> installed Ubuntu 9.10 and Gnuradio from the git.
>
> I must have made a typo somewhere because I get the following error
> when I probe the US
William Pretty Security Inc wrote:
Hi All;
Well I picked up my new system at Best Buy. (details later) I
installed Ubuntu 9.10 and Gnuradio from the git.
I must have made a typo somewhere because I get the following error
when I probe the USRP1:
On 04/27/2010 11:57 AM, William Pretty Security Inc wrote:
>
> Hi All;
>
>
>
> Well I picked up my new system at Best Buy. (details later) I
> installed Ubuntu 9.10 and Gnuradio from the git.
>
> I must have made a typo somewhere because I get the following error
> when I probe the USRP1:
>
>
>
> I thought there was an example for generic cards around but I can't
> seem to find it, maybe someone else knows where it is?
This is a quick example derived from some code I use when I want to
just capture random data for post processing.
http://www.jasonuher.com/toys/gnuradio/multi_rfx/multi_
On Tue, Apr 27, 2010 at 04:49, Robert Miller wrote:
> Thanks, Josh:) I did a quick search in my package manager for "gnuradio" and
> I was missing quite a few. I believe the culprit was
> "python-gnuradio-usrp2".
If you install 'gnuradio-companion', this will ultimately pull in all
the GNU Rad
> Recently I have been testing the examples of Gnu Radio. And I came across
> some problems. When I use a USRP with two daughterboards, I found that the
> two daughterboards can not trismit or receive at the same time. They can
> only work as one transmitter and one receiver. I want to know wheth
> Unfortunately, I failed to checkout this version with the following message:
> svn: Server sent unexpected return value (405 Method Not Allowed) in
> response to PROPFIND request for
> '/svn/gnuradio/branches/features/inband-usb'
>
The gnuradio repository has switched to using GIT for version co
Hi All;
Well I picked up my new system at Best Buy. (details later) I installed
Ubuntu 9.10 and Gnuradio from the git.
I must have made a typo somewhere because I get the following error when I
probe the USRP1:
--
Thanks, Josh:) I did a quick search in my package manager for "gnuradio" and
I was missing quite a few. I believe the culprit was
"python-gnuradio-usrp2".
Thanks again,
Rob
Josh Blum-2 wrote:
>
> The gnuradio deb packages are split into many sub-components, you are
> probably missing the gn
Hi,
Recently I have been testing the examples of Gnu Radio. And I came across
some problems. When I use a USRP with two daughterboards, I found that the two
daughterboards can not trismit or receive at the same time. They can only work
as one transmitter and one receiver. I want to know whethe
Hi,
Would it be possible to use the rational resampler code, ie.,
gr_rational_resampler_base_xxx.cc (which is in
gnuradio-core/src/lib/filter) in any of the C++ application lets say,
tx_samples.cc, just i want to upsample by certain interpolation factor,
and decimate by a factor, to achieve m
Hi,
According to the instructions on CGRAN project - CMUmacs, before I
successfully run the code, I have to checkout older version GNURadio
with the following command:
svn co http://gnuradio.org/svn/gnuradio/branches/features/inband-...@8298
Unfortunately, I failed to checkout this version
Am 24.04.2010 um 01:31 schrieb Josh Blum:
> XCVR2450 and RFX series boards are now supported in the UHD.
>
> Here is the link to the wiki and manual that I have been working on:
> http://ettus-apps.sourcerepo.com/redmine/ettus/projects/uhd/wiki
>
> The microblaze firmware has changed since the p
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