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Sponsored Artificial Intelligence: A Modern Approach, Global Edition Artificial Intelligence: A Modern Approach, Global Edition

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Xue-Long Li

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Preprint Sep 2026

Exact Second-Order Asymptotics for Covert Communication over DMCs with Variational Distance Constraints

We determine the exact second-order asymptotics of covert communication over binary-input discrete memoryless channels when covertness is measured by variational distance. Previous work by Tahmasbi and Bloch [IEEE Trans. Inf. Theory, Apr. 2019] characterized the first-order asymptotics and derived achievability and con...

Qiao-Sheng Zhang, Lin Zhou, Xue-Long Li · 0 citations

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