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Joint Source-Channel Coding With Feedback

Author(s)
Kostina, Victoria; Polyanskiy, Yury; Verdu, Sergio
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Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/
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Abstract
This paper quantifies the fundamental limits of variable-length transmission of a general (possibly analog) source over a memoryless channel with noiseless feedback, under a distortion constraint. We consider excess distortion, average distortion, and guaranteed distortion (d-semifaithful codes). In contrast to the asymptotic fundamental limit, a general conclusion is that allowing variable-length codes and feedback leads to a sizable improvement in the fundamental delay-distortion tradeoff. In addition, we investigate the minimum energy required to reproduce k source samples with a given fidelity after transmission over a memoryless Gaussian channel, and we show that the required minimum energy is reduced with feedback and an average (rather than maximal) power constraint.
Date issued
2017-06
URI
https://hdl.handle.net/1721.1/121936
Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Laboratory for Information and Decision Systems
Journal
IEEE Transactions on Information Theory
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Kostina, Victoria, Yury Polyanskiy and Sergio Verd ́u. "Joint source-channel coding with feedback." IEEE Transactions on Information Theory 63, issue 6 (June 2017 ): pp. 3502 - 3515.
Version: Author's final manuscript
ISSN
0018-9448
1557-9654

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