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cs.IT2024
Whispering Secrets in a Crowd: Leveraging Non-Covert Users for Covert Communications
Abdelaziz Bounhar, Mireille Sarkiss, Michèle Wigger
This paper establishes the fundamental limits of a multi-access system where multiple users communicate to a legitimate receiver in presence of an external warden. Only a specific…
cs.IT2024
Unveiling Covert Semantics: Joint Source-Channel Coding Under a Covertness Constraint
Abdelaziz Bounhar, Mireille Sarkiss, Michèle Wigger
The fundamental limit of Semantic Communications (joint source-channel coding) is established when the transmission needs to be kept covert from an external warden. We derive infor…
cs.IT2024
Covert Multi-Access Communication with a Non-Covert User
Abdelaziz Bounhar, Mireille Sarkiss, Michèle Wigger
In this paper, we characterize the fundamental limits of a communication system with three users (i.e., three transmitters) and a single receiver where communication from two cover…