MATLAB/Windows and the USRP

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2007/4/19, Kevin Rudd (Contractor) <Kevin.Rudd@...>:
> Hello all,
>    I just received my USRP and I have successfully installed GNURadio on my
> Linux box.  I am just starting to dabble with the code a bit.  I am very
> much a Windows/MATLAB developer, so I think I could be far more productive
> if I could just stream the baseband waveforms to and from the USRP from
> MATLAB.  I see on Ettus's site that some are working on a MATLAB interface.
> I would like to contribute to this effort.  Does anyone have a good starting
> point?  Are there any windows drivers (dll's or source)?

Hi,

If you want to do off-line analysis in matlab, python or octave, a
solution that works for me is to just record a suitable amount of data
with usrp_rx_cfile.py, and thereafter do whatever I like in my
high-level language of choice. It might not be the best solution if
you want to tweak USRP parameters from Matlab, but it works.

--
Trond Danielsen


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Hi Kevin,

I think the capabilities that we are developing at the moment are
related. What we soon hope to achieve is a USRP server (Linux box
running GNU Radio with a USRP), servicing clients (only one at this
stage) that are running Windows/Matlab. Communications occur over
TCP/IP. The server will recognise a range of commands such as
“set_rf_tx_freq”, “set_rf_tx_power”, “play_file” etc. The end results
will be the ability for the remote client machine to generate waveforms
and control the USRP from within Matlab. At this stage server feedback
to the client (other than error reporting) is not required. I think
though, that what you want is Windows/Matlab/GNU Radio/USRP on the same
machine.

(P.S, sorry if I have screwed up the "reply" process, not entirely sure
if I'm doing it right)

Jonas


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Kevin Rudd (Contractor) wrote: The binaries are a bit outdated.
I haven't found the time to make new ones.
(It is quite a long process updating and building the windows installers)

I will probably make some new ones someday, but don't pin me down on a date.
You could build from source yourself on mingw or cygwin on windows.
More people are doing this.

Greetings,
Martin


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I've just recently been using TCP socket connections to send data to/
from MATLAB.  you could use file_descriptor_sink[source] block in GNU  
Radio to push data to/from the USRP.  The sockets I have been using  
are at

http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?
objectId=345

I have done work with file_descriptor_sink[source] and work with  
sockets in MATLAB, but not together =).

David


On Apr 19, 2007, at 10:28 AM, Trond Danielsen wrote:



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Kevin Rudd (Contractor) wrote:
Hello,

with some friends we have developped an USRP interface to matlab. See:
http://www.tools4sdr.com/DispPubli?Id=1678410

Examples of use are given:
http://www.tools4sdr.com/DispPubli.php?Id=2917710 (simple
communications)
http://www.tools4sdr.com/DispPubli.php?Id=2275110 (channel IR
estimation)
http://www.tools4sdr.com/DispPubli.php?Id=2963610 (baudrate estimation)

Pierre

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