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Invertibility of linear periodically time-varying filters

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1 Author(s)
M. Vetterli ; Dept. of Electr. Eng., Columbia Univ., New York, NY, USA

The invertibility of linear periodically time-varying (LPTV) filters is addressed. A necessary and sufficient condition under which a LPTV filter can be inverted is shown using a LPTV postfilter. Such techniques find application, for example, in aliasing cancellation in multirate systems

Published in:

IEEE Transactions on Circuits and Systems  (Volume:36 ,  Issue: 1 )