Re: [Discuss-gnuradio] Using the USRP LFRX daughterboard to receive a complex baseband signal (I+Q)

[Matt Ettus]

Josh Blum wrote:
> The current USRP API does not support receiving complex signal (I on RXA 
> and Q on RXB) from LFRX and BasicRX boards. At least not in an easy way...
>
> In the future, the USRP API will support complex samples, and 
> "usrp_dual_source_x" will have an option called antenna: "RXAB"
>
> Any word on this from developers?



We've talked about this in the past.  The quickest way to do this would 
be to mod the LFRX code.  Currently it has 2 subdevices, one for the A 
input and one for the B input, which control the mux settings.  If we 
made a setting for a "C" input which just changed the mux settings, that 
would solve it pretty quickly.

Matt