Accession Number : ADA327668
Title : Optimum Quantization of a Class of Non Bandlimited Signals,
Corporate Author : CALIFORNIA INST OF TECH PASADENA DEPT OF ELECTRICAL ENGINEERING
Personal Author(s) : Tuquan, Jamal ; Vaidyanathan, P. P.
PDF Url : ADA327668
Report Date : NOV 1996
Pagination or Media Count : 5
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.
Descriptors : *QUANTIZATION, *TIME SIGNALS, OPTIMIZATION, SHAPE, CODING, GAIN, FILTERS, NOISE REDUCTION, BANDWIDTH.
Subject Categories : Test Facilities, Equipment and Methods
Electricity and Magnetism
Quantum Theory and Relativity
Distribution Statement : APPROVED FOR PUBLIC RELEASE