Re: [Discuss-gnuradio] Asking info about the Interleaving of samples

[Matt Ettus]

Rigas,

It is not necessary to cc: Eric and me when sending a message to the GNU 
Radio mailing list, since we are on the list.  Sending 2 copies of your 
message in 15 minutes is also not necessary.

> I have used a sinusoidal signal generator to test my USRP output 
> stream using a single or even the teo inputs to the RX daughterboard.
> I suppose there are 4 channels at the end when I use both RX 
> daughterboard inputs, for I and Q so I tried to separate my output 
> data by using a 4 sample interleaving but it does not seem I can 
> reconstruct my input sinusoidal signal at all.
>
> I have really a difficult time to decode the output data stream, I 
> know there is some kind of interleaving process, but I cannot 
> speculate what that is, can you please let me know of a reference or 
> of a webpage or if someone can tell me how to separate my output data 
> for each channel?

You need to send some code so we can tell you what you are doing wrong.  
But the basics are : You need to tell the usrp source how many streams 
you want.  You need to set up the mux properly.  If you want 4 streams, 
you need to use the alternate rbf file.

Matt