Accession Number:

ADA327668

Title:

Optimum Quantization of a Class of Non Bandlimited Signals,

Descriptive Note:

Corporate Author:

CALIFORNIA INST OF TECH PASADENA DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

• Tuquan, Jamal
• Vaidyanathan, P. P.

Report Date:

1996-11-01

Pagination or Media Count:

5.0

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