Communication in the presence of adversarial jamming: The curious case of the erasure channel

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• Dr Sidharth Jaggi, University of Bristol
• Wednesday 09 November 2022, 14:00-15:00
• MR5, CMS Pavilion A.

If you have a question about this talk, please contact Prof. Ramji Venkataramanan.

Alice wishes to communicate with Bob, but the malicious jammer James wishes to stop this communication from occurring. What can she do? In this talk I’ll explore recent discoveries/capacity-characterizations in a variety of settings (the role of causality in James’ jamming, the role of myopicity in his observations, the interplay between these two, and the effect of rate-limited feedback). I’ll focus on one of the simplest non-trivial jamming channels—the case of a binary input channel, in which James may erase a constant fraction of transmissions—even here, interesting phenomena occur. Time permitting, I may also briefly describe generalizations to other jamming channels/scenarios.

This talk is part of the Information Theory Seminar series.

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