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Optimum quantization of a class of non-bandlimited signals

Tuqan, Jamal and Vaidyanathan, P.P. (1996) Optimum quantization of a class of non-bandlimited signals. In: Asilomar Conference on Signals, Systems and Computers, 30th, 1996. Vol.2. IEEE , Piscataway, NJ, pp. 1396-1400. ISBN 0-8186-7646-9.

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We consider the quantization of a special class of non bandlimited signals, namely the class of discrete time signals that can be recovered from their decimated version. Similar to sigma-delta modulation ideas, we show that we can obtain a great reduction in the quantization noise variance due to the oversampled nature of these signals. We then consider noise shaping by optimizing a pre- and post filter around the quantizer and develop a closed form expression for the coding gain of the scheme under study. The use of an orthonormal filter bank as a sophisticated quantizer is investigated and several examples are provided.

Item Type:Book Section
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Vaidyanathan, P.P.0000-0003-3003-7042
Additional Information:© 1996 IEEE. Reprinted with Permission. Publication Date: 3-6 Nov. 1996. Work supported in parts by Office of Naval Research grant N00014-93-1-0231, Tektronix, Inc., and Rockwell International.
Subject Keywords:circuit noise; circuit optimization; digital filters; discrete time filters; encoding; interference suppression; quantization (signal); signal reconstruction ; signal sampling; closed form expression; coding gain; decimated version; discrete time signals; noise shaping; nonbandlimited signals; optimum quantization; orthonormal filter bank; oversampled nature; postfilter; prefilter; quantization noise variance; sigma-delta modulation
Record Number:CaltechAUTHORS:TUQasilo96
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10459
Deposited On:09 May 2008
Last Modified:08 Nov 2021 21:08

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