On Mon, Apr 07, 2008 at 12:15:50PM -0700, Chris Stankevitz wrote:
>
>
> I found two diagrams which seem to indicate different kinds of 
> multiplication:
>
> http://www.nd.edu/~jnl/sdr/docs/tutorials/6.jpg
>
> http://www.gnu.org/software/gnuradio/doc/ddc.png
>
> I hope the DDC performs complex multiplication because I am feeding it with 
> one real signal (via BasicRX A:0) and would like to use both I and Q 
> outputs in my application.
>
> Chris

It performs the equivalent of complex multiplication.

Eric


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