Scalar Lattices and Probabilistic Shaping for Dithered Wyner-Ziv Quantization
Information Theory
2025-06-17 v1 math.IT
Abstract
Scalar lattice quantization with a modulo operator, dithering, and probabilistic shaping is applied to the Wyner-Ziv (WZ) problem with a Gaussian source and mean square error distortion. The method achieves the WZ rate-distortion pairs. The analysis is similar to that for dirty paper coding but requires additional steps to bound the distortion because the modulo shift is correlated with the source noise. The results extend to vector sources by reverse waterfilling on the spectrum of the covariance matrix of the source noise. Simulations with short polar codes illustrate the performance and compare with scalar quantizers and polar coded quantization without dithering.
Keywords
Cite
@article{arxiv.2506.13162,
title = {Scalar Lattices and Probabilistic Shaping for Dithered Wyner-Ziv Quantization},
author = {Muhammed Yusuf Sener and Gerhard Kramer and Shlomo Shamai and Wen Xu},
journal= {arXiv preprint arXiv:2506.13162},
year = {2025}
}