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Two-Stage-Based Polyphase Structures for Arbitrary-Integer Sampling Rate Conversion
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DOI：10.1109/TCSII.2015.2389291.png)
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Abstract
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This brief derives efficient two-stage-based polyphase structures for arbitrary-integer sampling rate conversion. For even-integer conversions, the overall structures correspond to parallelized conventional two-stage structures, but the derivations in this brief offer further insights when comparing the two cases of odd-and even-integer conversions. For the class of linear-phase finite-length impulse response Mth-band filters, it is then demonstrated through design examples that conversions by odd factors are in fact more efficient than by even factors.
Keywords:
Decimation
interpolation
Mth-band filters
multistage structures
Nyquist filters
polyphase structures
sampling rate conversion
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