Multiple description delta-sigma quantization with individual and central receivers

Adam Mashiach*, Jan Østergaard, Ram Zamir

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this work we present a practical scheme for L-channel symmetric Multiple Description coding when one is only interested in receiving either a single description or all L descriptions. This scheme is based on oversampling and dithered Delta-Sigma quantization and is an extension of a scheme previously presented by Østergaard and Zamir. The oversampling process creates L redundant representations of the source, while the delta-sigma quantization with feedback-loop enables trading-off side distortion (receiving one description) for central distortion (receiving all the descriptions). We prove that the proposed scheme is asymptotically optimal (at large lattice quantizer dimension and high noise-shaping filter order) at any resolution for a Gaussian source and MSE fidelity criterion. In order to prove this optimality result we give an explicit expression for the rate-distortion function, which was previously known as a non explicit optimization problem.

Original languageEnglish
Title of host publication2010 IEEE 26th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2010
Pages942-946
Number of pages5
DOIs
StatePublished - 2010
Event2010 IEEE 26th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2010 - Eilat, Israel
Duration: 17 Nov 201020 Nov 2010

Publication series

Name2010 IEEE 26th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2010

Conference

Conference2010 IEEE 26th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2010
Country/TerritoryIsrael
CityEilat
Period17/11/1020/11/10

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