Re: [Discuss-gnuradio] Spectrum Inversion

[Matt Ettus]

Pepito31 Pepito31 wrote:
> Hi,
> I have recorded a signal that is spectrum inverted. I've heard that it's
> possible to restore the signal by "swapping" I and Q, but I remember
> that there was a "minus" to intruduce in-between.
> Could you please help me, giving me the exact transformation to apply,
> and eventually the associated limitations.
>
>   

You can invert the spectrum of a complex signal by doing ONE and ONLY 
ONE of the following:
   swapping I and Q
   negating I
   negating Q


Matt