The discrete memoryless interference channel with one-sided generalized feedback

Shraga I. Bross, Yossef Steinberg, Stephan Tinguely

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We study the interference channelwith one-sided generalized feedback and secrecy requirements. In our model, Message 1 that is known just to Encoder 1 should be decoded by both receivers. Message 2 - known only to Encoder 2 - should be decoded by Decoder 2 and kept as secret as possible from Decoder 1. The uncertainty of Decoder 1 about Message 2 is measured by means of the equivocation rate. In addition, a noisy feedback is provided to Encoder 2.We derive an achievable rate-equivocation region for this model and an outer bound for the "noisy cribbing" regime without secrecy, the gap being the Markov conditions satisfied by one of the auxiliary random variables. Furthermore, we consider a simplified causal cognitive interferencemodel: the interference channel with a cribbing encoder.We derive an inner bound on the rate region for this model and prove that when the interference channel is degraded conditionally on the input of Encoder 1, our inner bound is tight.

Original languageEnglish
Article number6479365
Pages (from-to)4171-4191
Number of pages21
JournalIEEE Transactions on Information Theory
Issue number7
StatePublished - Jul 2013


  • Cognitive interference channel
  • Generalized feedback


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