Dynamically re-configurable signal decimation system using a finite impulse response (FIR) filter
US8589461B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2003 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Sep 24, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/0664
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A signal decimating system decimates an initial data signal having an initial data rate R to a final data signal having a final data rate R″ in two stages, using a base decimation factor N and a decimation multiplier factor P. In the first stage, N FIR filters having coefficients corresponding to the final data rate R″ condition the initial data signal using the final data rate coefficients and thereafter decimate the initial data signal, as conditioned, by a base decimation factor of N to generate an intermediate data signal having an intermediate data rate R′, whereIn the second stage, a sub-sampling unit includes a switch that sub-samples the intermediate data signal at a sub-sampling rate P to generate a final data signal having a final data rate R″, where
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.