On a special class of broadcast channels with confidential messages

@article{Dijk1997OnAS,
  title={On a special class of broadcast channels with confidential messages},
  author={Marten van Dijk},
  journal={IEEE Trans. Information Theory},
  year={1997},
  volume={43},
  pages={712-714}
}
It is shown that Csisźar and Körner’s characterization of a discrete memoryless channel (DMC)X ! Y as being less noisy than the DMC X ! Z is equivalent to the condition that the mutual-information difference I(X;Y ) I(X;Z) be a convex\ function of the probability distribution for X. This result is used to obtain a simple determination of the capacity region of the broadcast channel with confidential messages (BCC), which is a DMC X ! (Y; Z), when the DMC X ! Y to the legitimate receiver is less… CONTINUE READING
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