Two-way lossy compression via a relay with self source

We consider interactive source coding of two sources through a relay which also has a source. Alice and Bob have no direct links and wish to exchange their sources with fidelity via an intermediary, Ryan. Ryan also has an individual source and seeks to communicate it to Alice and Bob. We develop inn...

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Veröffentlicht in:Proceedings / IEEE International Symposium on Information Theory S. 150 - 154
Hauptverfasser: MolavianJazi, Ebrahim, Yener, Aylin
Format: Tagungsbericht Journal Article
Sprache:Englisch
Veröffentlicht: IEEE 01.07.2016
Schlagworte:
Coding
Compressing
Decoding
Distortion
Exchange
Information theory
Interactive
Optimization
Random variables
Rate-distortion
Relay
Relaying
Relays
Source coding
ISSN:2157-8117
Online-Zugang:Volltext
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Zusammenfassung:We consider interactive source coding of two sources through a relay which also has a source. Alice and Bob have no direct links and wish to exchange their sources with fidelity via an intermediary, Ryan. Ryan also has an individual source and seeks to communicate it to Alice and Bob. We develop inner and outer bounds for the optimal rate-distortion region of this problem, which coincide in certain lossless cases, e.g., when the sources of Alice and Bob are conditionally independent given the source of Ryan or when two of the sources are functions of the third one. The bounds heavily make use of Wyner-Ziv and Berger-Tung coding and often rely on linear network coding. Our results highlight the dual role of the relaying source, which, on one hand, facilitates compression rate savings for the other two sources by helping as side information, and on the other hand, requires additional rate for its own description.
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SourceType-Conference Papers & Proceedings-2
ISSN:2157-8117
DOI:10.1109/ISIT.2016.7541279