Re: [Discuss-gnuradio] xcvr2450 and MIMO

[Per Zetterberg]

Matt Ettus wrote:
> On 01/18/2010 12:49 PM, Per Zetterberg wrote:
> > Dear All.
> >
> > I think I read on the list that xcvr2450 doesn't support MIMO (frequency
> > coherent transceivers to be more precise). However, when I search for
> > xcvr2450 and MIMO in the archives I don't find any post on this.
> >
> > Can somebody update me on this ?
>
>
> You CAN do MIMO with the XCVR2450.  However, phased arrays (where you 
> need to know the absolute phase difference between boards) will be 
> hard due to the fractional-N synthesizer.
>
> The only board which is not MIMO capable is the TVRX.
>
> Matt
That's great! But doesn't the same problem (fractional-N synthesizer) 
also apply to the RFX? I think I have seen this phase-shift. I have used 
my own db driver most of the time - does the proper driver fix this ?

BR/
Per