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[Discuss-gnuradio] CIC decimator in software

From: Marcus D. Leech
Subject: [Discuss-gnuradio] CIC decimator in software
Date: Sat, 16 Apr 2011 19:23:22 -0400
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I'm looking for opinions about whether doing a single-stage, N=2 decimator in software is practical for sample rates of ~100Msps. Assume reasonably-modern X86-64 hardware, and R=[2..500].

It looks like the integrator stage could be reasonably lightweight, and the comb stage for N=2 could also be
  quite lightweight.

Assume that input words are 10 to 12 bits.

It looks like bit growth wouldn't be much of an issue, because it's single-stage.

Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

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