Hi:
I want to try my daughterborad basic_TX and TV_RX.
I try to use ./benchmark_tx.py -f 100M and ./benchmark_rx.py -f 100M
Only the ./benchmark_tx.py can run, The ./benchmark_rx.py can't receive any
signal.
So, what's wrong about this? How can I do?
Thanks in advance.
Mei-Wen Li
Hi:
I want to try my daughterborad basic_TX and TV_RX.
I try to use ./benchmark_tx.py -f 100M and ./benchmark_rx.py -f 100M
Only the ./benchmark_tx.py can run, The ./benchmark_rx.py can't receive any
signal.
So, what's wrong about this? How can I do?
Thanks in advance.
Mei-Wen Li (Emily)
On 01/18/2010 12:53 AM, sandeep mishra wrote:
Hi,
Please help.
during installation of ariprobe I got following errors:
out_pcap.c:8:18: error: pcap.h: No such file or directory
out_pcap.c: In function ‘write_pcap_file_header’:
out_pcap.c:34: error: storage size of ‘pfh’ isn’t known
Hello Everyone,
we are glad to announce that our IEEE802.11a/g/p OFDM frame encoder has
passed the last round of testing and is now finally released on CGRAN (under
GPLv3):
https://www.cgran.org/wiki/ftw80211ofdmtx
What does the encoder do? In a nutshell: take a MAC payload, slap a static
Hello ,
I have posted a query on the forum regarding compiling u...@_rev3
on ISE11.1 , I still could not find a good remedy for this.
I am attaching the error message with this mail. i hope this will help form
some one to help me regarding the problem.
Compiling verilog file
Hi all
I am trying OFDM transmission and receive test.
I’m using Ubuntu 9.10, gnuradio version 3.3 and two USRP boards with basic TX
and RX and I am using GRC.
In the GRC I make simple test signal flow with usrp
Tx : File source - OFDM mod - USRP sink
Rx : USRP source- OFDM demod
Li Mei-Wen wrote:
Hi:
I want to try my daughterborad basic_TX and TV_RX.
I try to use ./benchmark_tx.py -f 100M and ./benchmark_rx.py -f 100M
Only the ./benchmark_tx.py can run, The ./benchmark_rx.py can't
receive any signal.
So, what's wrong about this? How can I do?
Thanks in advance.
On Mon, Jan 18, 2010 at 02:23, Paul Fuxjäger fuxjae...@ftw.at wrote:
we are glad to announce that our IEEE802.11a/g/p OFDM frame encoder has
passed the last round of testing and is now finally released on CGRAN (under
GPLv3):
https://www.cgran.org/wiki/ftw80211ofdmtx
Excellent work, thanks
Sorry, but your question is not very clear. It's a wireless modem, which
means it's subject to all sorts of issues that are dependent on your
setup and parameters.
The best thing to do is to start simple and use usrp_fft.py to see if
you can observe any signal at the receiver and that the
I was exited to see the vrt progress. I have compiled Josh's usrp2_vrt-
branch, installed the required firmware/fpga- image in the sd- card, and
can find the usrp2. Everything working so far.
But now comes the question, is there a way to read the current usrp2-
time, so that I can do
Sorry, but your question is not very clear. It's a wireless modem, which
means it's subject to all sorts of issues that are dependent on your
setup and parameters.
The best thing to do is to start simple and use usrp_fft.py to see if
you can observe any signal at the receiver and that
Hi,
I am looking for a way to measure noise power through usrp1. I tried to
test with usrp_spectrum_sense.py, however I am not sure the power values
measured is correct, because it is not same values shown as the graph
from usrp_fft.py. I wonder if someone helps me out for this.
Thanks,
Hi,
Is there a way to get the data from ADC directly? I can find some
examples to get it with using FFT, however without FFT, I wonder how it
can be gotten.
Thanks,
Kyungtae
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On Sat, Jan 16, 2010 at 2:09 PM, Matt Ettus m...@ettus.com wrote:
What daughterboards are you using? If it is the BasicRX or LFRX and BasicTX
or LFTX, the you are probably better off doing this all in the same USRP2.
It would take some relatively small modifications to the FPGA.
We are
On 01/18/2010 12:36 PM, Kyungtae Kim wrote:
Hi,
I am looking for a way to measure noise power through usrp1. I tried
to test with usrp_spectrum_sense.py, however I am not sure the power
values measured is correct, because it is not same values shown as the
graph from usrp_fft.py. I wonder
Kyungtae
Do you mean directly after it is sampled, before any of the DDC
functions? Then the answer is no. You will have to decimate by a
factor of at least 4 when using real sampling and 8 when using complex
sampling to be able to get the data over the USB link (for the USRP1).
Sebastiaan
--
Thanks, I tried to find the example, however I couldn't in the gnuradio
directories. Could you let me know where I can find the sample code?
Thanks,
Kyungtae
From: discuss-gnuradio-bounces+kyungtae=nec-labs@gnu.org
[mailto:discuss-gnuradio-bounces+kyungtae=nec-labs@gnu.org] On
I've been trying to create a usrp2 dual source class for a number of
weeks now, and I've come to realize there is something fundamental
about this development environment that I don't understand.
Basically i've been installing gnuradio and grc on a variety of Ubuntu
machines buy building
On 01/18/2010 01:22 PM, Kyungtae Kim wrote:
Thanks, I tried to find the example, however I couldn't in the
gnuradio directories. Could you let me know where I can find the
sample code?
Thanks,
Kyungtae
*From:* discuss-gnuradio-bounces+kyungtae=nec-labs@gnu.org
On Sun, Jan 17, 2010 at 02:13:10PM -0500, CAS wrote:
I am trying to communicate with an external board (not the usrp)
using usb. I have a driver installed under Windows that works fine
with a standalone application. I have a gnuradio block for the same
board, but am unable to get the usb
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
2) FYI The second parameter to
Maybe you have a typo from copying the usrp2 code, or didnt fill in the
make function in a cc file. The compiler wont catch something like that
unless you try to call the make function in some example c++ app. See
gr-usrp2/src/usrp2_source_32fc.cc
usrp2_source_32fc_sptr
Hi,
In my experimentation, the measured power depends on fft_size and
dwell_delay in usrp_spectrum_sense.py while measuring noise power, the
larger those values results in higher measured power even if it is
normalized based on the fft_size like this.
20*math.log10(math.sqrt(bin)/tb.fft_size)
If you mean usrp_spectrum_sense.py and usrp_fft.py, then,
usrp_spectrum_sense.py in Gnuradio/gnuradio-examples/python/usrp,
usrp_fft.py in Gnuradio/gr-utils/src/python/, if your install gnuradio
is Gnuradio.
Thanks,
Kyungtae
From: Marcus D. Leech [mailto:mle...@ripnet.com]
Sent: Monday,
I can believe i have a typo (though I have been looking at this for
months, trust me :-) ) - but what I don't understand is, when I do
nm -a _usrp2.so | grep make
on the regular build it shows all four of the make methods as
undefined. Isn't that what U means? (I'm asking). So how at
run-time
Thanks Sebastiaan. Now I know what the decimation means. Then, if I
decimate by 4 or 8, how I can get the sampled values before reaching fft
bins. What I want to do is to measure the noise power.
Thanks,
Kyungtae
-Original Message-
From: Sebastiaan Heunis [mailto:sheu...@gmail.com]
On Mon, Jan 18, 2010 at 03:08:53PM -0500, Tom Gross wrote:
I can believe i have a typo (though I have been looking at this for
months, trust me :-) ) - but what I don't understand is, when I do
nm -a _usrp2.so | grep make
on the regular build it shows all four of the make methods as
Hi all,
while I am trying to install gsm-receiver in airprobe, during make I got
following errors:
Making all in openbtsstuff
make[6]: Entering directory
`/home/sandeep/airprobe/gsm-receiver/debug/src/lib/decoder/openbtsstuff'
/bin/bash ../../../../libtool --tag=CXX --mode=compile g++
On Tue, Jan 19, 2010 at 01:56:39AM +0530, sandeep mishra wrote:
Hi all,
while I am trying to install gsm-receiver in airprobe, during make I got
following errors:
Wrong list.
Please post your question to airprobe-main.
Eric
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Discuss-gnuradio
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 archives I don't find any post on this.
Can somebody update me on this ?
BR/
Per
Josh Blum wrote:
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
2) FYI The second parameter
Thanks Eric and Josh!
I think what's happening is that the systems that work have the make
methods in /usr/local/lib.
Doesn't explain to me what I am doing wrong in trying to clone them,
but at least it clarifies what's going on...
___
Hi everyone,
I need to replace the C502 capacitor and
I am not able to identify the right component.
It is one of those bigger yellowish capacitors, located just next to the
TXB letters on the USRP board.
On www.digikey.com, for instance, one can choose from the following:
Aluminum (13,539
Hi everyone,
I've been trying to make USRP2 work in Ubuntu 9.04 running in
VirtualBox and while I was
able to install gnuradio all right, I cannot communicate with the
USRP2 unit. For instance,
find_usrps (run either as user or root) always returns: No USRP2
found.
I was wondering if
On 01/18/2010 01:53 PM, Per Zetterberg wrote:
Hi All,
On the FAQ page http://gnuradio.org/redmine/wiki/gnuradio/USRP2GenFAQ it
is said the PPS signal should be synchronous to the 10 MHz reference.
I this really necessary ?
If you need to be able to sync the sampling to the exact 10ns sample,
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 archives I don't find any post on this.
Can somebody update me on this
On 01/18/2010 01:02 PM, Per Zetterberg wrote:
Josh Blum wrote:
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
Dear all.
We are trying to setup a MIMO node using a USRP motherboard and two
xcvr2450. Theoretically the maximum allowable transmission bandwidth when
using two antennas simultaneously is 4 MHz or 8 MHz if using a single
antenna (limited by the bandwidth of the USB port). However, we have seen
Dear all,
What's the default setting, if python doesn't write any register in AD9862. For
example, in gr-sounder project there isn't any configuration for AD9862 chip.
Thanks in advance
Regards,
Yan
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10uF 16 Volts Size-C
Matt
On 01/18/2010 01:34 PM, Demijan Klinc wrote:
Hi everyone,
I need to replace the C502 capacitor and
I am not able to identify the right component.
It is one of those bigger yellowish capacitors, located just next to the
TXB letters on the USRP board.
On
On Mon, Jan 18, 2010 at 04:19:30PM -0500, Demijan Klinc wrote:
Hi everyone,
I've been trying to make USRP2 work in Ubuntu 9.04 running in
VirtualBox and while I was
able to install gnuradio all right, I cannot communicate with the
USRP2 unit. For instance,
find_usrps (run either as user
On Mon, Jan 18, 2010 at 11:46:53PM +0100, Óscar González Fernández wrote:
Dear all.
We are trying to setup a MIMO node using a USRP motherboard and two
xcvr2450. Theoretically the maximum allowable transmission bandwidth when
using two antennas simultaneously is 4 MHz or 8 MHz if using a
I have been transmitting random data using benchmark_tx and benchmark_rx.
two things happen
1. the first transmission will be successful. If i stop the command and
retry it immediately nothing happens. I have to unplug and plug the ursp
back again and it works. Any ideas as to why that happens
hi
in grc,i have a problem,i want to trasimit a band signal with the grc 's
block,but when i tansimitted it,there is something wrong with it.in the
receiver,it is only a frequent point signal.so it indicate that the trasimitter
is wrong.i guess the usrp sink do not do a goog work.so how can i
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 archives I don't find any post on this.
Can
I have seen several report gr-pager compilation problems.
I ran into this on a computer. The solution was straightforward. I did not
have ALL of the packages from
http://gnuradio.org/redmine/wiki/gnuradio/UbuntuInstall
installed because given the apt-get command indicated on that page
What is the amplitude of the digital samples going into the usrp sink?
For usrp, the max amplitude is 2**15. Try an amplitude around 10e3
For usrp2, the max amplitude is 1.0. Try an amplitude around 0.1
-Josh
On 01/18/2010 07:58 PM, cbwangmail wrote:
hi
in grc,i have a problem,i want to
Ettus website says it is full duplex. Gnuradio code says it is half-duplex.
Which one is right?
It is definitely full duplex
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