Hi,
I am working on estimating the delay between a Tx and an Rx using a stream
of packets modulated in a BPSK scheme (1 Mb/s) with a pair of N210.
(Sampling of 8 Mbits/s)
I want to know if the latency added by the portion(*) of [ FPGA - DAC - RF
front end to the antenna *2 (Rx Part) ] could be
Dear Josh,
Thanks for the hint. The issue occurred after Visual Studio 2012 installation
and is resolved by replacing the cvtres.exe from VS2010 with the one from
VS2012.
Best,
Zo
Date: Thu, 25 Apr 2013 14:54:37 -0700
From: ml-node+s4n41007...@n7.nabble.com
To: xtmpcvs...@hotmail.com
However, I have some 27 warnings in MSVC and I don't know how important they
are:
C4244: '=' : conversion from 'double' to 'uint32_t', possible loss of data
C4800: 'int' : forcing value to bool 'true' or 'false' (performance warning)
C4305: '=' : truncation from 'double' to 'float'
Can they be
HI guy,
I have checked the code in ofdm_receiver.py and found that gnuradio uses
Schmidl and Cox as default correlator for frame detection. However, when I
change to other correlators like* ml or pnac*,the receiver cannot receiver
any more. Is there any problem with that? Thanks so much.
Best,
On Thu, May 02, 2013 at 04:52:53PM +0800, Yingjie Chen wrote:
I have checked the code in ofdm_receiver.py and found that gnuradio uses
Schmidl and Cox as default correlator for frame detection. However, when I
change to other correlators like ml or pnac,the receiver cannot receiver any
more.
Thanks for you reply. Can you tell me what should I do next? Update the
code or other things? Cause I am very urgent with my project and need to
use other correlator(like pnac). Thanks in advance.
2013/5/2 Martin Braun (CEL) martin.br...@kit.edu
On Thu, May 02, 2013 at 04:52:53PM +0800,
Hi all,
don't forget the deadline for the GSoC application is tomorrow, 1900
UTC.
Good luck,
MB
--
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)
Dipl.-Ing. Martin Braun
Research Associate
Kaiserstraße 12
Building 05.01
76131 Karlsruhe
Phone: +49 721 608-43790
hi all,
Now a days i am working on cooperative communication and i am
simulating my communication on channel model block but i don't know the purpose
of the some parameters of channel model block like epsilon?, taps?, and
frequency offset? can somebody tell me the purpose of
Irfan,
epsilon: Simulates Sampling-Clock-Mismatch. It uses rational-resampling for
interpolation/decimation. value=1 means no-mismatch i.e.
in-samp-rate=out-samp-rate. value=1.1 means receiver clock is
fast(sample added). value=0. means rcvr clock is slow (sample-skipped).
useful for
On Thu, May 2, 2013 at 9:33 AM, Adeel Anwar adeela...@gmail.com wrote:
Irfan,
epsilon: Simulates Sampling-Clock-Mismatch. It uses rational-resampling for
interpolation/decimation. value=1 means no-mismatch i.e.
in-samp-rate=out-samp-rate. value=1.1 means receiver clock is
fast(sample
Hi all,
I'm using two USRP1 as transmitter and receiver.
I'm trying to make the receiver listening to three channels. I found
that I have to use the 4rx FPGA image for 4 RX DSPs on the USRP1.
But when I run my command with the
--args=fpga=usrp1_fpga_4rx.rbf option and I got this error:
On 02 May 2013 11:45, Nada ABDELKADER wrote:
Hi all,
I'm
using two USRP1 as transmitter and receiver.
I'm trying to make the
receiver listening to three channels. I found
that I have to use the
4rx FPGA image for 4 RX DSPs on the USRP1.
But when I run my command
with the
I got the same error!
mle...@ripnet.com a écrit :
On 02 May 2013 11:45, Nada ABDELKADER wrote:
Hi all,
I'm
using two USRP1 as transmitter and receiver.
I'm trying to make the
receiver listening to three channels. I found
that I have to use the
4rx FPGA image for 4 RX DSPs on the
On 02 May 2013 12:25, Nada ABDELKADER wrote:
I got the same
error!
What version of UHD are you using?
Can you forward to the list
a minimum .grc file that shows the problem?
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Hi all,
* Is it a correct to estimate by an ICMP echo-reply the latency between a
host and the USRP N210 at a giving instant.
* To estimate the delay in the Digital portion from the FPGA till the signal
is outputted by the antenna, is it a good way to fed the USRP by a signal
(similar as am
On 05/02/2013 12:06 PM, NaceurElOuni wrote:
Hi all,
* Is it a correct to estimate by an ICMP echo-reply the latency between a
host and the USRP N210 at a giving instant.
That wouldnt work. There is a soft micro in the FPGA fabric for the
purposes of network bring-up and some setup
thank you
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If everything works fine: Ignore them.
The first one seems interesting, but does not necessarily imply an
error.
(sometimes you really just want to check if a double is still
in initialized state, e.g. filled with zeros and therefore use it as a
boolean; some compilers interpret that as cast to
Its not quite that simple and the other factors are not negligible by any
means. The recommended approach would be to download Wireshark, capture the
traffic and analyse it in the Throughput Graph.
You can adapt the Wireshark setup from this:
http://www.dslreports.com/faq/15888
Regards,
On Thu, May 2, 2013 at 2:06 AM, Johnathan Corgan
johnat...@corganlabs.com wrote:
On Wed, May 1, 2013 at 2:15 PM, Alexandru Csete oz9...@gmail.com wrote:
There is a gr_timer.h header in the gnuradio/next installation
directory, however, when I try to use this class I get
Hi Erik,
thanks - I managed to install gnuradio that way. When trying to run a
usrp example I get the following error-message:
examples/uhd# ./usrp_wfm_rcv_nogui.py
linux; GNU C++ version 4.7.2 20130108 [gcc-4_7-branch revision 195012];
Boost_104900; UHD_003.005.002-61-g08624153
Traceback
This error is saying that GR-UHD was built against an older version of UHD
than you're using now, a 3.4.* version from the looks of it. To fix this,
rebuild GR-UHD against your current UHD.
cd (GNU Radio build directory)/gr-uhd
make clean
sudo make install
On Thu, May 2, 2013 at 1:01 PM,
Hello all--
Built from: Master
Last commit: b52a6f36d76012951b72ad07277664bbc07d57cd
I am attempting a loopback test using the packet encoder/decoder and a few
different modulation schemes (QAM for this specific example).
Upon attempting to source a file generated to align to the configured
Hi,
I am sending a stream on packets between two USRP N210, and at the Tx side i
am setting a center freq. of 2.490 GHz for eg.
when outputting the Tune Result, I am always getting a difference of some
khz. (Target Freq: 2.49 GHz
I'm trying to create a block that accepts messages and prints them out.
I created a block that extends gr_block and it has no stream ports: I'm
using gr_io_signature(0,0,0) for input and output. I am following the
guidance of this page:
http://gnuradio.org/doc/doxygen/page_msg_passing.html
Hello,
I am trying to create a block that detects sync patterns at baseband
tagging the first sample of the pattern using stream tags, then using the
tags down stream as part of demodulation. I have made a few assumptions
about how gnuradio works that I would like to validate:
- a sync pattern
Hi!
We need to implement a connection between usrp E110 (python) and a C#
application in a host.
In usrp, we use UDP Sink to send traffic from usrp to host, but we don't know
if UDP Source can be used in C# application or if we have to use basic UDP
sockets.
Is there some like that in C# or
Hi,
I would like to know if having set the configuration of one USRPN210 per
Ethernet interface is better (in terms of minimizing the latency towards the
Host) than the configuration of multiple USRPs connected to a host via a
unique Eth interface (eg. 192.168.10.x )
Which config. have better
thank you that was helpful
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