Digital IQ Reconstruction from a non-IQ Sampled Waveform

Larry Doolittle, LBNL, November 2008

How to digitally downconvert a stream of non-IQ-sampled IF ADC readings to IQ representation, without adding large filter delays. Tested Verilog code is included.

DSP data path

This same math was supposedly once published by Stefan Simrock's group at DESY, but I lost the reference.

Larry Doolittle
August 13, 2011