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- Diagram:
- Basic Idea: Take every
sample.
- Time Domain:
, i.e.,
- Frequency Domain:
, i.e.,
Thus, the frequency axis is expanded by factor
, wrapping
times around the unit circle and adding. For
, two partial
spectra are summed, as indicated below:
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Download JFB.pdf
Download JFB_2up.pdf
Download JFB_4up.pdf
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