On the Performance of Uniform Threshold Quantization for a sum of Independent Memoryless Laplacian Sources

The performance of uniform threshold quantization subject to an entropy constraint is studied for a sum of two and three independent zero-mean memoryless Laplacian sources. Both symmetric and asymmetric quantizers are considered, and approximate parametric expressions for the operational rate-distor...

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Bibliographic Details
Published in2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07 Vol. 3; pp. III-1485 - III-1488
Main Authors Sheinin, V., Da-ke He
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2007
Subjects
Entropy
Helium
Laplace equations
Laplacian sources
Mean square error methods
Performance analysis
Predistortion
Quantization
Random variables
Rate-distortion
Source coding
Wyner-Ziv coding
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ISBN9781424407279
1424407273
ISSN1520-6149
DOI10.1109/ICASSP.2007.367129

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Summary:The performance of uniform threshold quantization subject to an entropy constraint is studied for a sum of two and three independent zero-mean memoryless Laplacian sources. Both symmetric and asymmetric quantizers are considered, and approximate parametric expressions for the operational rate-distortion function R(D) are obtained for all rates. In particular, the low rate regime (rates below 1 bit per sample) is considered and simpler expressions for R(D) are derived. It is envisioned that these expressions will facilitate rate estimation in practical Wyner-Ziv coding with low complexity encoder.
ISBN:9781424407279
1424407273
ISSN:1520-6149
DOI:10.1109/ICASSP.2007.367129