[USRP-users] Configuration Simulink

Jorge Miguel jmiggal at gmail.com
Thu Nov 4 13:31:01 EDT 2010

Hi all,

I have the same problem.

When I receive/send information from/to the USRP2 I cannot manage to do it
in real time. It seems that Simulink is very heavy or that Windows doesn´t
give enough priority to Simulink process. It is also the reason why I loose
a lot of packets when I receive from the USRP.

I have a quite new quad core computer. Is there any special setting that
makes Simulink works in real time with the USRP2 ?


> From: MOISES NAVARRO <moises.navarro at campus.uab.es>
> Dear All,
> I'm working with simulink and usrp2.
> I trying to synchronize with an OFDM signal.
> I noticed a possible problem.
> I set up the simulation for 10 seconds (stop time), but the simulation
> takes
> about 60 seconds. As I conclude that my processor can not generate the
> signal so fast, right?
> So I decided to create the signal and store it in a variable. Subsequently
> generated a program that only reads the variable and transmitted through
> the
> My surprise is that neither is able to run this program in real time (read
> and send a variable) it  takes around 15 seconds. I have configured the
> Decimation to 512 and SampleTime to 512/100e6.
> It is normal for a corel 2 duo is not capable of running at that speed? If
> I
> monitor the processor is at 100 %.....
> There any special settings for simulink work well? " Is there any way to
> configure simulink to work in real time with USRP2?
> and if the processor inst fast enough that appears a warning or error?
> Thank you very much
> Moses
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