On Thu, 9 Feb 2012 21:24:46 +0100, Jorge Hernandez wrote: 

> Hi
all, 
> 
> I've just updated my system and found a problem when trying
to use the uhd_mimo_sink: AtributeError: 'module' object has no
attribute 'mimo_sink'.
> I don't know if it has to do with some mistake
during the installation progress and this block is missing or it is
something else. Referring to this I would like to know if someone who
has already implemented a mimo system could tell me which sink/source
blocks should be used.I have a MIMO cable and I guess the smartest is to
use this uhd_mimo_sink and uhd_mimo source, but it may work too using
two simple uhd_usrp_sink and configuring one of them as a slave as it is
explained in the application notes, is it right? I would like to know if
someone has experience on that and could me to use the best option.
Thank you very much in advance! any advice would be great!
> 
>
Jorge

Those blocks haven't been present in many releases. 

Use the
normal UHD source/sink blocks, and configure the clocking appropriately.
The source/sink blocks can have many, many, many streams, which each
stream connected to different motherboard device addresses, etc. 

  
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