Hi All,
I was able to send four bursts between two USRP2s. The two USRP2s were
equipped with xcvr2450 boards. The bursts were 0.336ms long. The spacing
between the bursts were 3ms. The sample rate was 25MHz. The four bursts
were sent as A-B, B-A, A-B, B-A. The nodes were locked to (the same)
Hi:
Please tell me, how much the TVRX receiver sensitivity?
Thanks in advance.
Mei-Wen Li (Emily)
National Cheng-Kung University Dept. of
Computer Science and Information Engineering
emily7...@hotmail.com
Hi,
From: Jeff Brower jbro...@signalogic.com
Matt-
We're working on a project at Signalogic to interface one of our DSP array
PCIe cards to the USRP2. This would
?provide a way for one or more TI DSPs to insert into the data flow and run
C/C++ code for low-latency
and/or other high
That memory would be enough to capture 2.5ms at 100MHz if I calculate
correctly (1e6/(100e6*4)). I could do with less.
BR/
Per
Jeff Brower wrote:
Per-
If we had an fpga image that allowed us to store samples on the USRP2
that would be very benefitial, at least for me. Then one could
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Now I can build the firmware.
When I copy txrx.bin from the subfolder apps to the sd-card. I can't
connect to the USRP2. The led e and f burns. The GNU Radio Companion (GRC)
stops the program with the error message RuntimeError: No USRPs found on
interface eth1.
When I copy txrx.bin from
Hello
I am seeing quite a bit about code that was written by Eric Cottrell for
aircraft Mode S decoders and the like.
Where can I find the code ?
Andrew___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
Ian,
Yes, we use usrp2_fft.py to find and set the property rx_gain first.
Bin
On Wed, Mar 31, 2010 at 1:11 AM, Ian Holland ian.holl...@rlmgroup.com.auwrote:
I have been inactive on this for some time due to other issues with my
USRP2s. However, I have been able to look into this again now,
Hi,
I have a problem concerning USRP2. I am using GRC to make flow graphs but I can
not find USRP2 when I use USRP source block. When I run a simple program with
only two blocks (USRP source and Scope Sink) I get following error:
Verbose:
usrp: failed to find usrp[0]
Traceback (most recent
Umair
It seems to me you are using the USRP block when you should be using the USRP2.
If not... which version of Gnuradio are you using?
Charles
On Wed, Mar 31, 2010 at 11:19 AM, Umair Naeem ar...@student.chalmers.se wrote:
Hi,
I have a problem concerning USRP2. I am using GRC to make
Wow, how did you find this ancient version of grc?
Anyway, here is the note from my website:
Please use the grc that is bundled with the current gnuradio master or
the gnuradio 3.2 release. It has a years worth of work and improvements
compared to the last versioned release of grc (0.70). In
- Start Original Message -
Sent: Wed, 31 Mar 2010 22:39:25 +1000
From: Andrew Rich vk4...@tech-software.net
To: gnuradio discuss-gnuradio@gnu.org
Subject: [Discuss-gnuradio] Mode S and ADS-B
Hello I am seeing quite a bit about code that was written by Eric
Cottrell for aircraft Mode S
Hi Tim,
Actually just today i solved the problem of USRP2 synchronisation.
I downloaded the new firmware code from the gnuradio website did the following
changes by adding clocks_mimo_config(MC_WE_LOCK_TO_SMA); just before the while
loop, in the txrx.c compiled it and burnt in SD
On 03/31/2010 03:59 AM, Li Mei-Wen wrote:
Hi:
Please tell me, how much the TVRX receiver sensitivity?
Thanks in advance.
The sensitivity of a receiver depends on a few factors, so it's hard
to give a meaningful answer.
The tuner module (MT4937) has a noise figure of about 8-10dB, which
Hi Tim Sorry for the typing error
the last sentence was..
I have also verified, python generated code top_block.py by the GRC for the
above function with the tx_samples.cc , both are sending 32bit floating
complex values to usrp2_sink..., how come their results are
different? even though
Hi,
I have some issue with tx_samples.cc and the GRC.
when i send the file containing complex IQ samples from GRC
Transmitter side : File Source ---USRP2_sink(interp=16, f=1.8G)
|--FFT_sink(avg=yes)
If we had an fpga image that allowed us to store samples on the USRP2
that would be very benefitial, at least for me. Then one could test
algorithms with 100MHz sample-rate. Yes, it would not be possible to
use the channel continously. Receiving 1ms of samples would take 4ms
to upload.
What about the gain setting? In grc, the gain setting defaults to 0 dB,
this is not the case for tx_samples, try adding -g 0 to the options.
-josh
On 03/31/2010 08:37 AM, Krishna S wrote:
Hi,
I have some issue with tx_samples.cc and the GRC.
when i send the file containing complex IQ
OK, we're up and running! Turns out Ubuntu had Boost included, so SKIP the
boost install step.
Here's what I needed to do to make it work. From a botched make, I did the
following in the gnuradio directory:
make uninstall
make clean
make distclean
I probably could simplify that, but it
Firas-
From: Jeff Brower jbro...@signalogic.com
Firas-
A couple of brief comments:
1) Sounds like this was a
high-speed data acq card, optimized for streaming, not an accelerator
card. How big was the
FIFO?
The FIFO was 64MByte.
That's huge... and you mentioned a 64k block transfer,
On Wed, Mar 31, 2010 at 14:26, Eric Blossom e...@comsec.com wrote:
The boost options shouldn't be necessary, since it's in the normal place.
Also, Ubuntu's ldconfig already has /usr/local/lib in it's search
path, as it is put there by the libc package. The /usr/lib directory
is the normal
On 31 Mar 2010, at 17:35, Johnathan Corgan wrote:
On Wed, Mar 31, 2010 at 14:26, Eric Blossom e...@comsec.com wrote:
The boost options shouldn't be necessary, since it's in the normal place.
Also, Ubuntu's ldconfig already has /usr/local/lib in it's search
path, as it is put there by the
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