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Communication Dans Un Congrès Année : 2023

Mixing a covert and a non-covert user

Résumé

This paper establishes the fundamental limits of a two-user single-receiver system where communication from User 1 (but not from User 2) needs to be undetectable to an external warden. Our fundamental limits show a tradeoff between the highest rates (or square-root rates) that are simultaneously achievable for the two users. Moreover, coded time-sharing for both users is fundamentally required on most channels, which distinguishes this setup from the more classical setups with either only covert users or only non-covert users. Interestingly, the presence of a non-covert user can be beneficial for improving the covert capacity of the other user.

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Dates et versions

hal-04240057 , version 1 (12-10-2023)

Identifiants

Citer

Abdelaziz Bounhar, Mireille Sarkiss, Michèle Wigger. Mixing a covert and a non-covert user. 2023 IEEE International Symposium on Information Theory (ISIT), Jun 2023, Taipei, Taiwan. pp.2577-2582, ⟨10.1109/ISIT54713.2023.10206954⟩. ⟨hal-04240057⟩
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