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Prefiltering: cascaded stages of decimation-by-two

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1 Author(s)
R. L. Mitchell ; MARK Resources Inc., Santa Monica, CA

A very efficient method of reducing the bandwidth of a sampled signal is presented. The method is implemented as a sequence of filtering and decimation stages, where the data rate is halved in each stage. Part of the efficiency is gained through the use of symmetrical linear-phase finite-duration impulse response filters, which have the added benefit that the operation is free of any phase distortion

Published in:

IEEE Transactions on Aerospace and Electronic Systems  (Volume:25 ,  Issue: 3 )