Re: [Discuss-gnuradio] USRP2 LFTX maximum real baseband bandwidth?

[TANGUY Philippe]

Per Zetterberg wrote:
> Quoting TANGUY Philippe <address@hidden>:
>
> > Ulrika Uppman wrote:
> > > Hi,
> > > I believe the short format isn't implemented for the USRP2 yet, or 
> > > has this been done recently?
> > >
> > > /Ulrika
> >
> > Hi,
> >
> > Indeed, the short format seems to be not implemented for the USRP2 
> > yet. However, usrp2_sink_16sc can be used (I tried to send a cosine 
> > with short format but with no success) but do not work.
> >
> > If we can used the short format and an interpolation = 2, do you think 
> > that the data rate will be 50 MS/s * 16 (short) = 800 Mbits/s before 
> > the Digital Up Converter?
> >
> > and
> >
> > Is it possible to have an interpolation = 2 ?
>
> My understanding is that we need 32bits per sample, 16bits I and 16bits Q.
>
> BR/
> Per

Thanks for the response. Indeed, you are right.

In fact, I was confused between the GNUradio format representation and 
the  appropriate "on the wire" representation, depending on the current 
USRP2 configuration which is apparently 16-bit I & Q. (see in 
documentation here: 
http://gnuradio.org/doc/doxygen/classusrp2_1_1usrp2.html).


Now, my problem is to know if it is possible to use an interpolation of 
2 in order to have a data rate of 50 MS/s to transmit a  real baseband 
signal with a bandwidth of 25 MHz.

Regards,

Philippe.