On feedback in network source coding

Authors:
Mayank Bakshi;Michelle Effros
Affiliations:
Department of Electrical Engineering, California Institute of Technology, Pasadena, California;Department of Electrical Engineering, California Institute of Technology, Pasadena, California
Venue:
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
Year:
2009

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Abstract

We consider source coding over networks with unlimited feedback from the sinks to the sources. We first show examples of networks where the rate region with feedback is a strict superset of that without feedback. Next, we find an achievable region for multiterminal lossy source coding with feedback. Finally, we evaluate this region for the case when one of the sources is fully known at the decoder and use the result to show that this region is a strict superset of the best known achievable region for the problem without feedback.