Question about IF frequency to send

GNU Radio
1

Hello,

Were implementing a CDMA base station wholly within the FPGA on the
N210. I have a question regarding IF frequency. In the dsp_core_tx
module the IQ data is going through some interpolation and then a
cordic. Is the cordic used to upconvert to some IF before being sent to
the DAC? If so, what is the IF frequency into the DAC?

Thank you.

2

The CORDIC is only used for fine frequency correction when the LO can’t
tune
to the exact frequency you want. The IF is zero.

Matt

On Wed, Aug 31, 2011 at 7:03 AM, Delgado, Christopher <