In the superheterodyne receiver, if after mixing an intermediate frequency signal obtained by frequency lower than the original signal, then this method is called downconversion mixer (Down Converter or DC).

duc_ddc_jr2\CICdec.asv
...........\CICdec.m
...........\CICinterp.asv
...........\CICinterp.m
...........\ddc_test.asv
...........\ddc_test.m
...........\halfdec.m
...........\halfinterp.m
...........\NCOGenerate.asv
...........\NCOGenerate.m
...........\plot_astrology.asv
...........\plot_astrology.m
...........\Qam_demodulation.m
...........\Qam_modulation.m
...........\test.m
duc_ddc_jr2

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