A converse bound on Wyner-Ahlswede-Körner Network via Gray-Wyner network

  title={A converse bound on Wyner-Ahlswede-K{\"o}rner Network via Gray-Wyner network},
  author={Shun Watanabe},
  journal={2017 IEEE Information Theory Workshop (ITW)},
We show a reduction method to construct a code for the Gray-Wyner (GW) network from a given code for the Wyner-Ahlswede-Korner (WAK) network. By combining this reduction with a converse bound on the GW network, we derive a converse bound on the WAK network. The derived bound gives an alternative proof of the strong converse theorem for the WAK network. 
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