Hi everybody I'm trying to find a frequency correction burst of gsm.
This Burst is due to GMSK Modulation 67,7 kHz obove the carrier and
unmodulated.
I've got an older Nokia cell phone with some monitoring software where I can
read out the arfcns the phone sees and thus the frequencies of the BCCH
The effect we observe doesn't seem to be a non linear effect due to high
signal amplitude. Lowering the amplitude doesn't solve the problem. For
example, when we transmit a 1 MHz tone we can see that a spurious tone
appears at -3 MHz (referred to the carrier frequency) when using an
interpolation r
Hi,
Am trying to send IQ samples of float from one usrp2 to another usrp2.
As an ex: am taken the data of Sinusoidal generated from MATLAB, and
pumping into the 1st one using tx_samples and receiving into the 2nd
usrp2, and collecting into output file using -I option to the
rx_streaming_sampl
Hi,
I observed that tx_samples.cc is not accepting the gain input parameter
(ie., -g option). I just changed like this in my code.
Its working, so posting the changes. If it is acceptable please take it.
best regards,
srinivas.
>From 9ece309953d389b2c1d14680475b0a0662e6f09a Mon Sep 17 00:00:0
>> Glad you are trying out the branch. A few notes here:
>>
>> 1) There is a bug where after power-up, everytime (but the first) you
>> restart streaming and get samples there is junk data, and it will read
>> "bad vrt header". Its harmless, but should be fixed
>>
When you mention it, I do
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hello, all.
I've just tried to install the gnuradio debian packages in Ubuntu 9.10
(Karmic), as per the instructions in
http://gnuradio.org/redmine/wiki/gnuradio/DebianPackages, and they don't
work. The problem is that the packages depend on boost ver
Il 17/01/2010 19:32, Johnathan Corgan ha scritto:
Test tarball distribution files have been created for the current
3.3git release under development:
http://gnuradio.org/releases/gnuradio/gnuradio-3.3git-594-g02616cf8.tar.gz
http://gnuradio.org/releases/gnuradio/gr-howto-write-a-block-3.3git-594
Hi all,
Before i start telling about my problem, i want to mention that i have
already read the post named "help: cannot send after transport endpoint
shutdown" which is very close to my problem but i could not solve it.
I'm trying to transmit from the usrp port A, and then make it receive at
th
Hi,
I am using the USRP2 with the XCVR2450 board and I can observe a transient
effect while receiving the first 200e3 samples( decimation of 5) when using a
low gain setting (gain: 0 to 20) and no signal was to the input. Has anybody
observed anything similar and was able to determine where it
I have successfully run in this configuration, although virtualization
overhead had a significant performance impact. Make sure that you have
the virtual machine's network card in bridge mode, not NAT.
-Original Message-
From: discuss-gnuradio-bounces+prutschman=intven@gnu.org
[mailto:
Hi all,
A while back I noticed there are two signals called RS232_RXD and
RS232_TXD exposed on the PMC connector going to the daughtercard slots
on the USRP. Tracing these back on the USRP schematic, they go to the
Cypress EZUSB chip. I searched around a bit but didn't find any
reference to any d
Hi,
is there a possibility to read the data coming from the auxiliary ADC (AD7922)
at the moment? I couldn't find any hint in the code or on the mailing list
that could point me to a good direction to start.
Just out of interest: What should the auxiliary DAC (AD5623) be used for?
Thanks a l
On 01/19/2010 09:41 AM, John Orlando wrote:
Hi all,
A while back I noticed there are two signals called RS232_RXD and
RS232_TXD exposed on the PMC connector going to the daughtercard slots
on the USRP. Tracing these back on the USRP schematic, they go to the
Cypress EZUSB chip. I searched aroun
On 01/19/2010 09:47 AM, Christoph Thein wrote:
Hi,
is there a possibility to read the data coming from the auxiliary ADC (AD7922)
at the moment? I couldn't find any hint in the code or on the mailing list
that could point me to a good direction to start.
Just out of interest: What should the a
On Tue, Jan 19, 2010 at 11:55 AM, Matt Ettus wrote:
> On 01/19/2010 09:41 AM, John Orlando wrote:
>>
>> Hi all,
>> A while back I noticed there are two signals called RS232_RXD and
>> RS232_TXD exposed on the PMC connector going to the daughtercard slots
>> on the USRP. Tracing these back on the
On Tue, Jan 19, 2010 at 05:57, Arturo Rinaldi wrote:
> will these new *.deb binaries be good for updating on ubuntu 9.04 too ? or
> are they for ubuntu 9.10 specific only?
Right now they will be for Ubuntu 9.10. Unfortunately, 9.04 and 9.10
do not ship with a common version of Boost, so I would
Matt Ettus wrote:
>
> On 01/19/2010 09:47 AM, Christoph Thein wrote:
>> Hi,
>>
>> is there a possibility to read the data coming from the auxiliary ADC
>> (AD7922)
>> at the moment? I couldn't find any hint in the code or on the mailing
>> list
>> that could point me to a good direction to star
2010/1/19 Pedro Lobo :
> I've just tried to install the gnuradio debian packages in Ubuntu 9.10
> (Karmic), as per the instructions in
> http://gnuradio.org/redmine/wiki/gnuradio/DebianPackages, and they don't
> work. The problem is that the packages depend on boost version = 1.37.0
> (as opposed
I'm using the LFRX board on a USRP2 under grc version
3.3git-534-ga198e513
I've connected a USRP2 source to a scope sink configured for complex
input. The RX-A input maps to the real component of the complex signal.
I had hoped that RX-B would map to the imaginary portion but I'm only
seeing ze
just a simple questionwhy in D8PSK is the gray coding and decoding
the following ?
*# ---
# Do Gray code
# ---
# binary to gray coding -- constellation does Gray coding
binary_to_gray = {
2 : range(2),
4 : [0,1,3,2],
8 : [0, 1, 3, 2, 7, 6,
Il 19/01/2010 19:10, Johnathan Corgan ha scritto:
On Tue, Jan 19, 2010 at 05:57, Arturo Rinaldi wrote:
will these new *.deb binaries be good for updating on ubuntu 9.04 too ? or
are they for ubuntu 9.10 specific only?
Right now they will be for Ubuntu 9.10. Unfortunately, 9.04 and
On Tue, Jan 19, 2010 at 06:00:43AM -0800, abbasi wrote:
>
> Hi all,
> Before i start telling about my problem, i want to mention that i have
> already read the post named "help: cannot send after transport endpoint
> shutdown" which is very close to my problem but i could not solve it.
>
> I'
On Tue, Jan 19, 2010 at 11:19:04AM +0100, Óscar González Fernández wrote:
> The effect we observe doesn't seem to be a non linear effect due to high
> signal amplitude. Lowering the amplitude doesn't solve the problem. For
> example, when we transmit a 1 MHz tone we can see that a spurious tone
> a
On Tue, Jan 19, 2010 at 05:17:56PM +0530, srinivas naga vutukuri wrote:
>
> And also am trying to understand the ADC/DAC rates. I just put the
> usrp2::impl::adc_rate(), usrp2::impl::dac_rate() in the constructor
> usrp2::impl::impl() to see, i got both values printed as 1,
> (assuming 1 MHz or 1
It is my fault, I have read my first question and I have realised it isn't
well written.
Summarizing, the question is:
Do you think it can be possible to replace the CIC interpolation filters by
a better ones in spite of losing variable interpolation rate capabilities?
The only requirement is kee
There are new updates to the usrp2_vrt branch.
1) The sync at pps calls have been removed. They no longer apply and
have been replaced with the set time calls (see below).
2) The mimo config call has been replaced with a clock config call that
handles setting the pps source, pps polarity, ref
I was able to make USRP2 work with Ubuntu running in VirtualBox.
In order to do so one has to add a second network adapter
appropriately. On a Mac, this
is done by going to Settings (with Linux being highlighted in the
VirtualBox window) -> Network ->
Choose Adapter 2 tab ->
Choose Attached
2010/1/19 Johnathan Corgan :
> Right now I am testing the deb file creation process with 3.3git on
> Karmic (9.10), using Boost 1.40, and these will get posted on
> gnuradio.org in the unstable repository. Depending on time (and
> feedback), I will also build binary packages for 3.3git based on Bo
Il 19/01/2010 20:06, Johnathan Corgan ha scritto:
2010/1/19 Pedro Lobo:
I've just tried to install the gnuradio debian packages in Ubuntu 9.10
(Karmic), as per the instructions in
http://gnuradio.org/redmine/wiki/gnuradio/DebianPackages, and they don't
work. The problem is that the packages
On 01/15/2010 12:11 PM, andrea wrote:
Hi,
I'm testing gnuradio with the beagle board.
I'm using:
- gnuradio 3.2.1 (with neon patch).
- libusb-1.0-0
First, I've tried benchmark_dotprod_fff:
# ./benchmark_dotprod_fff
generic: taps: 256 input: 4e+07 cpu: 1119.820 taps/sec: 9.144e+06
cortex_a8: tap
On Tue, Jan 19, 2010 at 15:39, Arturo Rinaldi wrote:
> i've just got the idea that maybe you can publish the patch (the *.orig.tar,
> the *.dsc, the *.diff.gz) in the folder
>
> http://gnuradio.org/ubuntu/dists/unstable/main/source/
>
> as you did for release 472 and 473 so we can eventually buil
On Tue, Jan 19, 2010 at 15:31, Alexandru Csete wrote:
> In the Ubuntu personal package archives it is common practice to
> append "+distribution-name" after the package version,
> see for example https://launchpad.net/~gpredict-team/+archive/ppa/+packages
> I'm not sure if that would work if the
Eric Blossom wrote:
>
> On Tue, Jan 19, 2010 at 06:00:43AM -0800, abbasi wrote:
> From the backtrace below, it appears that you already have the source
> open, or you're running something else that has the source open, or
> you opened it earlier and didn't close it, or still have a live pyth
Hi,
is it possible to read the ADC value (before decimation/filtering) on the
USRP1/DBSRX?
The auxiliary ADCs are not decimated, so you can read them directly. To
read the normal high-speed ADC without decimation you will need to make
a custom FPGA image.
Matt
On 01/18/2010 09:23 PM, Per Zetterberg wrote:
Matt Ettus wrote:
On 01/18/2010 12:49 PM, Per Zetterberg wrote:
Dear All.
I think I read on the list that xcvr2450 doesn't support MIMO (frequency
coherent transceivers to be more precise). However, when I search for
xcvr2450 and MIMO in the archiv
We are currently working on a fix for the problems with compiling under
the ISE 11. We believe it to be a problem with ISE 11, since the design
works fine under ISE 10, but have not gotten very far. Any help anyone
can provide on this would be much appreciated.
Thanks,
Matt
On 01/18/2010
Yes, now correctly calling those two members, got 100M on ADC and DAC.
But when i use interp = 4 and rx_decim = 4 what ever input samples
tranmsitting is not correctly coming out? Any thought on this?
best regards,
srinivas.
Eric Blossom wrote:
On Tue, Jan 19, 2010 at 05:17:56PM +0530, srini
Matt-
> We are currently working on a fix for the problems with compiling
> under the ISE 11. We believe it to be a problem with ISE 11,
> since the design works fine under ISE 10, but have not gotten
> very far. Any help anyone can provide on this would be much
> appreciated.
I didn't see ISE
Dear ALL:
Thanks to Don I got to install gnuradio on XP+MSYS.
Earlier last year I wrote the following program to *receive streams from 2
daughter boards on a USRP*.
It works fine except that I need to restart my USRP before every reading (I
get to disconnect power and connect again).
This is be
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