Data type in the output of the source

GNU Radio
1

Hi Guys,

I have a new question about the type of the data in the output of the
source (RTL2832). The signal is represented with complex numbers! why?
What
do this complex numbers means physically?

In my head the data in the output should be real, should it?

2

On 08/19/2014 03:51 PM, Rodrigo Rozrio wrote:

/CREA-DF - 21339/D-DF/
/Engenheiro de Redes de Comunicao /
/Universidade de Braslia/

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The RTL delivers complex-baseband data. NOT a real-valued IF.

This is ery common in the SDR space, even if the analog bits are using a
real-valued IF, the post-digitization typically delivers a complex
(zero-based)
baseband.