Zero-Delay Joint Source-Channel Coding for a Bivariate Gaussian on a Gaussian MAC
Pal Anders Floor,Anna N. Kim,Niklas Wernersson,Tor A. Ramstad,Mikael Skoglund,Ilangko Balasingham +5 more
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Two distributed JSCC schemes for transmission of two correlated Gaussian memoryless sources over a Gaussian Multiple Access Channel are considered: one discrete scheme based on nested scalar quantization, and one hybrid discrete-analog schemes based on a scalarquantizer and a linear continuous mapping.Abstract:
In this paper, delay-free, low complexity, joint source-channel coding (JSCC) for transmission of two correlated Gaussian memoryless sources over a Gaussian Multiple Access Channel (GMAC) is considered. The main contributions of the paper are two distributed JSCC schemes: one discrete scheme based on nested scalar quantization, and one hybrid discrete-analog scheme based on a scalar quantizer and a linear continuous mapping. The proposed schemes show promising performance which improves with increasing correlation and are robust against variations in noise level. Both schemes also exhibit a constant gap to the performance upper bound when the channel signal-to-noise ratio gets large.read more
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Zero-Delay Joint Source-Channel Coding for a Multivariate Gaussian on a Gaussian MAC
Pal Anders Floor,Anna N. Kim,Tor A. Ramstad,Ilangko Balasingham,Niklas Wernersson,Mikael Skoglund +5 more
TL;DR: In this article, a nonlinear hybrid discrete-analog JSSC scheme based on distributed quantization and a linear continuous mapping named Distributed Quantizer Linear Coder (DQLC) was proposed.
Journal ArticleDOI
Zero-Delay Joint Source-Channel Coding Using Hybrid Digital-Analog Schemes in the Wyner-Ziv Setting
Xuechen Chen,Ertem Tuncel +1 more
TL;DR: The proposed encoding scheme is based on hybrid digital-analog (HDA) transmission in a zero-delay fashion and results in a better performance than the well-known inverse spiral mapping.
Journal ArticleDOI
On Joint Source-Channel Coding for a Multivariate Gaussian on a Gaussian MAC
Pal Anders Floor,Anna N. Kim,Tor A. Ramstad,Ilangko Balasingham,Niklas Wernersson,Mikael Skoglund +5 more
TL;DR: The main contribution is a zero-delay JSCC named Distributed Quantizer Linear Coder (DQLC), which performs relatively close the information theoretical bounds, improves when the correlation among the sources increases, and does not level off as the signal-to-noise ratio (SNR) becomes large.
Journal ArticleDOI
Low-Delay Joint Source-Channel Mappings for the Gaussian MAC
TL;DR: The bivariate Gaussian multiterminal source coding problem with transmission over the Gaussian multiple-access channel is studied and the use of low-delay joint source - channel mappings are proposed and shown how performance saturation can be overcome by optimizing the mappings.
Journal ArticleDOI
Deterministic Annealing-Based Optimization for Zero-Delay Source-Channel Coding in Networks
TL;DR: A powerful nonconvex optimization method based on the concept of deterministic annealing-which is derived from information theoretic principles and was successfully employed in several problems including vector quantization, classification, and regression is proposed.
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