Abstract/Details

Error spectrum shaping quantization


1993 1993

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Abstract (summary)

Error spectrum shaping (ESS) quantizers reduce quantization error in bandlimited signals by reducing quantizer error power in the signal band at the expense of increased error power outside the signal band. The error power outside the signal band is subsequently reduced by a reconstruction filter. The original analysis of ESS quantizers was based on ideal reconstruction filters and did not consider the effects of realizable reconstruction filters. Nor did the original analysis consider the effects of quantizer saturation or stability. Consequently, predictions of ESS quantizer distortion were often optimistic. This dissertation reports the extension of the original analysis to account for realistic reconstruction filters, saturation, and stability. Simulations show that the extended analysis accurately predicts the distortion of realistic ESS quantizers. ESS quantization is then applied to interferometric data using the extended analysis. A gain in signal-to-noise ratio of up to 30 dB over memoryless quantization was achieved for the interferometric data, using the same reconstruction filter and bit rate in both cases.

Indexing (details)


Subject
Electrical engineering
Classification
0544: Electrical engineering
Identifier / keyword
Applied sciences, reconstruction filters
Title
Error spectrum shaping quantization
Author
Stacey, Newell Dickson
Number of pages
160
Publication year
1993
Degree date
1993
School code
0022
Source
DAI-B 54/02, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
Advisor
Ware, Gene A.
University/institution
Brigham Young University
University location
United States -- Utah
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
9316738
ProQuest document ID
304040895
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/304040895
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