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Published November 1, 1996 | public
Book Section - Chapter Open

Optimum quantization of a class of non-bandlimited signals

Abstract

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.

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.

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