Vector Quantization with Error Uniformly Distributed over an Arbitrary Set

Vector Quantization with Error Uniformly Distributed over an Arbitrary Set

For uniform scalar quantization, the error distribution is approximately a uniform distribution over an interval (which is also a 1-dimensional ball). Nevertheless, for lattice vector quantization, the error distribution is uniform not over a ball, but over the basic cell of the quantization lattice...

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Veröffentlicht in:arXiv.org 2024-01
Hauptverfasser: Chih Wei Ling, Li, Cheuk Ting
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Counters
Errors
Vector quantization
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description For uniform scalar quantization, the error distribution is approximately a uniform distribution over an interval (which is also a 1-dimensional ball). Nevertheless, for lattice vector quantization, the error distribution is uniform not over a ball, but over the basic cell of the quantization lattice. In this paper, we construct vector quantizers with periodic properties, where the error is uniformly distributed over the n-ball, or any other prescribed set. We then prove upper and lower bounds on the entropy of the quantized signals. We also discuss how our construction can be applied to give a randomized quantization scheme with a nonuniform error distribution.
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Errors
Vector quantization
title Vector Quantization with Error Uniformly Distributed over an Arbitrary Set
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