Slepian-Wolf Coding over Cooperative Networks

Details Slepian-Wolf Coding over Cooperative Networks Slepian-Wolf Coding over Cooperative Networks

2009-01-15

arxiv.org/abs/0901.2218v1

Computer Science

Information Theory

5 pages, submitted to ISIT 2009

Scientific paper

We present sufficient conditions for multicasting a set of correlated sources over cooperative networks. We propose joint source-Wyner-Ziv encoding/sliding-window decoding scheme, in which each receiver considers an ordered partition of other nodes. Subject to this scheme, we obtain a set of feasibility constraints for each ordered partition. We consolidate the results of different ordered partitions by utilizing a result of geometrical approach to obtain the sufficient conditions. We observe that these sufficient conditions are indeed necessary conditions for Aref networks. As a consequence of the main result, we obtain an achievable rate region for networks with multicast demands. Also, we deduce an achievability result for two-way relay networks, in which two nodes want to communicate over a relay network.

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