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cs.IT2026
Exact Second-Order Asymptotics for Covert Communication over DMCs with Variational Distance Constraints
Qiaosheng Zhang, Lin Zhou, Xuelong Li
We determine the exact second-order asymptotics of covert communication over binary-input discrete memoryless channels when covertness is measured by variational distance. Previous…
cs.IT2025
Capacity Region for Covert Secret Key Generation over Multiple Access Channels
Yingxin Zhang, Lin Zhou, Qiaosheng Zhang
We study covert secret key generation over a binary-input two-user multiple access channel with one-way public discussion and derive bounds on the capacity region. Specifically, in…