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Altera_Forum
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9 years ago

Help needed in VHDl code for calculating the I and Q phase component for a ADC signal

Hello all, I am designing a DDC in which I need to calculate the In phase(I) and the Quadrature phase(Q) components of my ADC signal. I know how these components are manually calculated from som...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

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I'm not clear about your problem.

If you have the decimated output, you have the I/Q components, provided you have already multiplied your ADC signal in the mixer.

Your ADC should go through Mixer, then through decimation process. IS it the correct order in your implementation?

I guess that you mean you have no Mixer before decimation.

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Hi, I have a mixer before decimation. But at the output, I have it as a single digital output from which I need to find the I and Q phase components separately. I mean like "111100011101010100..." something like this. I need to decompose this output into I and Q components separately. How to do this in VHDL. Can you suggest me any way of finding this out. Thanks in advance.