Hi,
How do I generate variable phase signals using GNU radio blocks? For
example, I generate a reference Sine wave. I need another sine wave
whose phase can be varied with respect to the reference sine wave. How
can I do that?
Thanking you,
Regards,
Sivaram
On Tue, 2009-07-28 at 20:47 -0700, Jane Chen wrote:
> According to the explaination of the In-band Signaling in the link
> http://gnuradio.org/trac/wiki /InBandSignaling, In-band Signaling is
> what I need for the MAC layer implementation.. I try to find more
> information about it on the mailingl
Hi all,
According to the explaination of the In-band Signaling in the link
http://gnuradio.org/trac/wiki /InBandSignaling, In-band Signaling is what I
need for the MAC layer implementation. I try to find more information about it
on the mailinglist or the Web. I am wondering if In-band Signalin
On Tue, Jul 28, 2009 at 5:53 PM, Jonathan Coveney wrote:
> OSX. I got my USRP up and running, and now it isn't. In system profile it
> usb_control_msg failed: usb_control_msg(DeviceRequestTO): pipe is stalled
> fusb_ephandle_darwin::read_completed: Expected 32768 bytes; read 0.
> fusb_ephandle_dar
OSX. I got my USRP up and running, and now it isn't. In system profile it
even detects USRP 4, and when I run a program, the light slows down
flashing, but it doesn't seem to be reading anything.
Here is my error message when I use ./usrp_fft.py
/opt/local/lib/python2.5/site-packages/wx-2.8-mac-u
Fahimeh Rezaei wrote:
Hi Dear Friends
there are three pins in the schematic (interface page) that has net
lable, but these are not connected to anywhere, PE0, PE1 and PE3 from
cyprus microcontroller (I think 86,87 and 88 I am not sure) are just
labeled and as I checked by multimeter these pi
Hi Dear Friends
there are three pins in the schematic (interface page) that has net
lable, but these are not connected to anywhere, PE0, PE1 and PE3 from cyprus
microcontroller (I think 86,87 and 88 I am not sure) are just labeled and as
I checked by multimeter these pins on the board are not conn
On Tue, Jul 28, 2009 at 05:02:42PM -0400, Jonathan Coveney wrote:
> I will try and get a hold of the TVRX board, but in the meantime, are there
> any workarounds?
Use an FM dipole antenna, or for that matter, just plug a 75cm
(1/4 * 3e8/100e6) wire (not coax) into the center of the SMA connector
I will try and get a hold of the TVRX board, but in the meantime, are there
any workarounds? Is this because the BasicRX doesn't have a filter and
whatnot in it to specifically target the radio frequencies?
2009/7/28 Eric Blossom
> On Tue, Jul 28, 2009 at 03:55:26PM -0400, Jonathan Coveney wrote
On Tue, Jul 28, 2009 at 03:55:26PM -0400, Jonathan Coveney wrote:
> And I am using the Basic RX, if that makes a difference.
It will work more-or-less, but it's not really the daughterboard to
use to receive broadcast FM. The TVRX is a much better choice.
The USRP1 samples at 64MHz, which means
Thanks Eric!
2009/7/28 Eric Blossom
> On Tue, Jul 28, 2009 at 03:37:02PM -0400, Jonathan Coveney wrote:
> > Well, maybe that's the wrong way to phrase it. I need to make or buy an
> FM
> > antenna (I realized I accidentally grabbed the VERT900 from my lab, and
> they
> > don't have an FM antenna
On Tue, Jul 28, 2009 at 03:37:02PM -0400, Jonathan Coveney wrote:
> Well, maybe that's the wrong way to phrase it. I need to make or buy an FM
> antenna (I realized I accidentally grabbed the VERT900 from my lab, and they
> don't have an FM antenna).
>
> Some sites seem to imply that coax is usual
And I am using the Basic RX, if that makes a difference.
2009/7/28 Jonathan Coveney
> Thanks Eric!
>
> 2009/7/28 Eric Blossom
>
> On Tue, Jul 28, 2009 at 03:37:02PM -0400, Jonathan Coveney wrote:
>> > Well, maybe that's the wrong way to phrase it. I need to make or buy an
>> FM
>> > antenna (I
Well, maybe that's the wrong way to phrase it. I need to make or buy an FM
antenna (I realized I accidentally grabbed the VERT900 from my lab, and they
don't have an FM antenna).
Some sites seem to imply that coax is usually 70 ohm, but it looks like here
http://wireandcable.thermaxcdt.com/item/hi
On Tue, Jul 28, 2009 at 11:49, Kelley, Clifford
W wrote:
> burn-db-eeprom -A --force -t dbsrx2
I think it is 'dbsrx_clkmod', not 'dbsrx2':
http://gnuradio.org/trac/browser/gnuradio/trunk/usrp/host/apps/burn-db-eeprom
Johnathan
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On Tue, Jul 28, 2009 at 10:25:40AM -0700, George Nychis wrote:
> On Mon, Jul 27, 2009 at 7:06 AM, Johnathan Corgan <
> jcor...@corganenterprises.com> wrote:
>
> > On Mon, Jul 27, 2009 at 06:28, Dimitris Symeonidis
> > wrote:
> >
> > > Do we even need timestamps, or are the samples aligned (interle
Matt,
I saw your message about modifying the DBSRX to work with the USRP2 and
just wanted to confirm and ask a couple of other questions.
The two steps are:
1. Put the DBSRX into a USRP1 on Side A, connect to a computer and run:
burn-db-eeprom -A --force -t dbsrx2
2. Remove R193 (on t
On Mon, Jul 27, 2009 at 7:06 AM, Johnathan Corgan <
jcor...@corganenterprises.com> wrote:
> On Mon, Jul 27, 2009 at 06:28, Dimitris Symeonidis
> wrote:
>
> > Do we even need timestamps, or are the samples aligned (interleaved)
> > anyway, even with the standard FPGA image? We don't care about
> >
Thanks, I managed to sort the problem out. Firstly, I enabled
realtime scheduling by looking at usrp_spectrum_sense.py. Next I used
the RAMdisk in Ubuntu /dev/shm to run my application in (thanks
Jason).
Result is that I am able to sample two channels at 4Msps IQ each and
write it to disk afterw
Hi,
I was doing a test using benchmark_ofdm_tx and rx to achieve the ofdm
communication between two USRPs. At first, both USRPs could transmit and
receive correctly. However, after swithing tx/rx part for a few times, one
USRP suddenly failed in receiving (still can transmit), no matter which host
On Mon, Jul 27, 2009 at 15:33, Nick Foster wrote:
> Just wanted to let you know I've committed the first version of the AIS
> receiver I wrote to CGRAN. The project home page is at
> http://www.cgran.org/wiki/AIS.
Excellent! AIS is fascinating in that it uses self-organized TDMA.
Without central
On Tue, Jul 28, 2009 at 08:15, Stephan Sigg wrote:
> is it possible to alter the phase offset of RF signals (not baseband) using
> Gnu-Radio and a USRP with an RFX board?
This question is confusing.
Are you asking whether you can phase modulate a carrier and transmit
it with an RFX board? If so
On Tue, Jul 28, 2009 at 04:46, Sheshanandan KN wrote:
> usrp_open_interface:usb_claim_interface: failed interface 2
> could not claim interface 2: Device or resource busy
This can happen when another instance of a script that uses GNU Radio
doesn't exit cleanly. However, did this just start happ
Hi all,
is it possible to alter the phase offset of RF signals (not baseband) using
Gnu-Radio and a USRP with an RFX board?
Thanks,
Stephan
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Discuss-gnuradio@gnu.org
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On Tue, Jul 28, 2009 at 6:46 AM, Sheshanandan
KN wrote:
> hi all,
> I am working on the gnuradio 3.2 stable release. When I execute my
> python script, I am getting the following error. I am not getting the
> reason for this. If any one of you know about this, please let me
> know...
>
> could no
>> What's the host OS?
>
>
> OS X 10.5.7
>
I had absolutely no luck getting any kind of decent performance with
parallels or VMware when using gnuradio/ubuntu VMs under os x(10.4).
I haven't tried tried since I got my new laptop, but if you are set on
using your mac machine as a development box th
hi all,
I am working on the gnuradio 3.2 stable release. When I execute my
python script, I am getting the following error. I am not getting the
reason for this. If any one of you know about this, please let me
know...
usrp_open_interface:usb_claim_interface: failed interface 2
could not claim i
>
> What kind of VM?
>
VMware Fusion, latest version.
>
> What's the host OS?
OS X 10.5.7
> Does any other audio output work in the guest?
All audio and video playback works fine in the VM - I can even capture audio
using the examples but get audio under-run on output.
Thanks for helping.
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