Zero-Delay Joint Source-Channel Coding for a Bivariate Gaussian on a Gaussian MAC

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 o...

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Bibliographic Details
Published in:arXiv.org 2012-04
Main Authors: Paal Anders Floor, Kim, Anna N, Wernersson, Niklas, Ramstad, Tor A, Skoglund, Mikael, Balasingham, Ilangko
Format: Article
Language:English
Subjects:
Bivariate analysis
Codes
Coding
Delay
Mapping
Upper bounds
Online Access:Get full text
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Summary: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 improve with increasing correlation and are robust against variations in noise level. Both schemes exhibit a constant gap to the performance upper bound when the channel signal-to-noise ratio gets large.
ISSN:2331-8422