Hi,
I also have the similar problem at the receiver side, when trying to obtain
the constellation of DQPSK.
>From constellation sink block, I can obtain much better constellation. But,
using scope sink, it shows a mess.
As far as I went through the code of constellation sink, it seems like
condu
Hi,
I also have the similar problem at the receiver side, why trying to obtain
the constellation of DQPSK.
>From constellation sink block, I can obtain much better constellation. But,
using scope sink, it shows a mess.
As far as I went through the code of constellation sink, it seems like
conduc
Hi all,
I want to use tunnel.py with usrp1+xcvr2450 to create a network
interface, and I set the frequent to 5.0G.
The tx is ok, but it can't receive anything.
I google the reason about it, someone say that the gnuradio_r10853
can fix the question. However, I can't get the trunk version of 10853.
I
Fantastic stuff!
On 23 Jul 2010, at 22:26, Joshua Lackey wrote:
And leveraging the work from the osmocombb project
(http://bb.osmocom.org/trac/) will get you a far ways towards the
goal.
Quoting John Gilmore (g...@toad.com):
Dear All,
Do we think it is possible to create a software mobi
On Thu, Jul 22, 2010 at 09:29:17AM -0400, Bob McGwier wrote:
> The 2nd edition of the REALLY expensive ($29.95) SDR book by friend
> and colleague, Behrouz Farhang-Beroujeny, has been released from
> lulu. It contains important additions (OFDM, more filtering, all
> known errata fixed) and I rec
Hi,
> The OpenBTS code would give you a big head start.
The tranceiver part sure. But you'd still need pretty big modification
to have it act as a TDMA clock slave and not TDMA clock master (that's
quite different).
Once you have done the L1 inside the USRP somehow, you can re-use the
osmocom-bb
And leveraging the work from the osmocombb project
(http://bb.osmocom.org/trac/) will get you a far ways towards the goal.
Quoting John Gilmore (g...@toad.com):
> > Dear All,
> >
> > Do we think it is possible to create a software mobile phone using the
> > USRP, with the OpenBTS code or somet
> Dear All,
>
> Do we think it is possible to create a software mobile phone using the
> USRP, with the OpenBTS code or something else?
>
> I mean everything would be in software, plus the USRP?
It is absolutely possible. So far I don't know anyone who has
tried to do it. The OpenBTS cod
On Fri, Jul 23, 2010 at 12:31:19PM -0700, Ashish Bansal wrote:
> Hi,
> I am trying to understand the data flow in the FPGA. I am trying to
> understand the Architecture and aemb firmware program control flow.
> Which one is the top level firmware "C" file. How it gets data from ADC. How
> it intera
Hello,
I notice that in GNU Radio Companion there does not seem to be a way to
set the value of the auxiliary DACs. Is there a way to do this that I
have not noticed, or will I have to do so in the generated Python code
manually?
Thanks,
~Jeff
--
~Jeffrey Lambert, K1VZX
___
Hi,
I am trying to understand the data flow in the FPGA. I am trying to
understand the Architecture and aemb firmware program control flow.
Which one is the top level firmware "C" file. How it gets data from ADC. How
it interacts with the UART etc.Please let me know some details on it.
Thanks
JS
__
On Fri, Jul 23, 2010 at 11:29:40AM +0200, matty wrote:
> Hi,
>
> when i run benchmark_nop on Cell BE (PS3), i can see the speedup pretty
> well.
> When i take qa_fft.py as testcase i can't see the speedup.
> All SPEs run the same code for same time. So when i use 6 SPEs, computing
> takes the same
On Fri, Jul 23, 2010 at 10:35:12AM +0200, OE1RSA wrote:
> Hi Eric,
>
> it took me some time to assemble the RS 232 level shifter.
>
> First to explicitly answer your question about realtime
> scheduling. Yes I did put in the explicit enabling you
> have told me, and yes, I get no error, i.e. real
On Fri, Jul 23, 2010 at 1:51 AM, Craig Tong wrote:
> This USRP has been here since before my time but the other guys in the lab
> seem to think that it was bought directly from Ettus. It has the "Ettus
> Research LLC" sticker on it with the "Ser" number and test date.
>
> As for the lsusb. It repo
We need to synch up multiple U2's.
I've seen reference to using the MIMO cable to sync 2 U2s.
Is this currently supported by the existing software?
If so, what do I need to do in my own code in order to affect a sync? Would the
same code work with a GPSDO (e.g., Jackson Labs FireFly (which I'
Thanks a bunch for your response, Matt!
>
> Since you are using an interpolation is a multiple of 4, you won't see CIC
> rolloff, you get a nice flat passband.
>
Got ya!
> There are likely a couple of issues causing the spectrum to look bad.
> First, successive symbols coming out of the FFT
My goal is to rework DBPSK module, so that it is possible to easily implement
SDPSK module.
DBPSK goes like this: differential_encoding > ordinary BPSK, so there is no
actual constellation rotation. All rotation part is done by diff.encoder.
But this can be done only when shifting between 2 state
On Jul 23, 2010, at 9:48 AM, Charles Herdt wrote:
> Harley
>
> USRP2 uses Gigabit Ethernet because USB did not have enough bandwidth.
> If you use a usb dongle, you are killing its purpose.
> If you would like to use it through USB, I guess using a USRP 1 is a better
> idea.
> If you do get it t
1- GNU Radio 3.2.1
2- I'm not running out of CPU cycles
3- I've been dissecting the filtering blocks in GNU Radio in hopes of doing the
same on the DSP. It's my understanding that the filter can process
(noutput_items + ntaps) for each iteration. For DSP filtering, I've tried just
copy
Hello,
I've been looking into how usrp_spectrum_sense works and I have a
question about my understanding of how it works.
The basic idea is that is that you tune, take FFT(s?), then retune,
etc. This is done with the fft block and the stats block. My
questions are:
1) What is input_items conce
Hi Philip
its 712
Craig Tong
Radar Remote Sensing Group
University of Cape Town
On 23/07/2010 15:36, Philip Balister wrote:
On 07/23/2010 04:51 AM, Craig Tong wrote:
This USRP has been here since before my time but the other guys in the
lab seem to think that it was bought directly from Ettu
On 07/23/2010 04:51 AM, Craig Tong wrote:
This USRP has been here since before my time but the other guys in the
lab seem to think that it was bought directly from Ettus. It has the
"Ettus Research LLC" sticker on it with the "Ser" number and test date.
What is the serial number?
Philip
As
Hi Brian thanks for reply, right now we are stuck with DDC
On Thu, Jul 22, 2010 at 7:41 PM, Brian Padalino wrote:
> On Thu, Jul 22, 2010 at 7:28 PM, zero cool wrote:
> > hi all,
> > I am trying to design my own DDC for the purpose of better reception of
> gsm
> > signals, but stuck with its des
Is anyone using a Gigabit Ethernet USB dongle to communicate with a USRP2? If
so, which one?
Thank you,
Harley Myler
CONFIDENTIALITY: Any information contained in this e-mail (including
attachments) is the property of The State of Texas and unauthorized disclosure
or use is prohibited. Sen
you need to go into gnuradio-3.2.2/gr-qtgui/src/lib and delete all the
files ending in moc.cc
and then run
./configure
make
make check
make install
Let me know if that fixes it for you
Alex
2010/7/23 刘权 :
> my gnuradio 3.2.2 passes through configure on ubuntu 10.04, while there is a
> building p
As far as I know that module is no longer supported and it's not
needed for running GNU Radio
Alex
2010/7/23 刘权 :
> I try to get gunradio3.3.0 launched on ubuntu 10.04, but the module
> gr-comedi can not pass building. when type ./configure, the result as
> follows:
>
> checking for COMEDI... no
Dear All,
Do we think it is possible to create a software mobile phone using the
USRP, with the OpenBTS code or something else?
I mean everything would be in software, plus the USRP?
Abdalaleem
___
Discuss-gnuradio mailing list
Discuss-gnurad
Hi,
when i run benchmark_nop on Cell BE (PS3), i can see the speedup pretty
well.
When i take qa_fft.py as testcase i can't see the speedup.
All SPEs run the same code for same time. So when i use 6 SPEs, computing
takes the same time
as 1 SPE but it computes six times more.
I think i have to set
This USRP has been here since before my time but the other guys in the
lab seem to think that it was bought directly from Ettus. It has the
"Ettus Research LLC" sticker on it with the "Ser" number and test date.
As for the lsusb. It reports:
Bus 001 Device 007: ID fffe:0002
similar to lsu
Hi Eric,
it took me some time to assemble the RS 232 level shifter.
First to explicitly answer your question about realtime
scheduling. Yes I did put in the explicit enabling you
have told me, and yes, I get no error, i.e. realtime scheduling
should be set succesfully.
2010-07-20 20:18, Blossom:
On 07/22/2010 11:51 PM, George Nychis wrote:
Hi all,
I am generating my own "OFDM" waveform which actually does not modulate
anything. Step by step.
I am simulating 1024 subcarriers but first generating 1024 zeros, and
then I want to only enable the center 100 subcarriers. To do this, I
map t
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