Sum-rate distortion bound for suboptimal multiterminal source coding applied in medical wireless sensor networks

Authors:
Hieu T. Nguyen;Tor A. Ramstad;Ilangko Balasingham
Affiliations:
Norwegian University of Science and Technology (NTNU), Trondheim, Norway;Norwegian University of Science and Technology (NTNU), Trondheim, Norway;Norwegian University of Science and Technology (NTNU), Trondheim, Norway and University of Oslo, Oslo, Norway
Venue:
Proceedings of the 7th International Conference on Body Area Networks
Year:
2012

Citing 3
Cited 0

Approximating the rate-distortion region of the distributed source coding for three jointly Gaussian tree-structured sources

ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 3
Gaussian multiterminal source coding

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Rate Region of the Quadratic Gaussian Two-Encoder Source-Coding Problem

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Abstract

In this paper, we derive the suboptimal sum-rate distortion bound for encoding correlated Gaussian sources for which the uniform scalar quantizers are used to convert the signals from analog to the discrete form. The correlated discrete signals are further compressed using the lossless Slepian and Wolf encoder. The gap between the suboptimal bound and the inner/outer bounds is also investigated. The result shows that the gap is at most 0.255 bits/sample/source which is far less than the universal bound of 2.45 bits/sample given in [1] for the three tree-structured Gaussian sources.