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- W4288283661 abstract "Motivated by applications in the security of cyber-physical systems, we pose the finite blocklength communication problem in the presence of a jammer as a zero-sum game between the encoder-decoder team and the jammer, by allowing the communicating team as well as the jammer only locally randomized strategies. The communicating team's problem is non-convex under locally randomized codes, and hence, in general, a minimax theorem need not hold for this game. However, we show that approximate minimax theorems hold in the sense that the minimax and maximin values of the game approach each other asymptotically. In particular, for rates strictly below a critical threshold, both the minimax and maximin values approach zero, and for rates strictly above it, they both approach unity. We then show a second order minimax theorem, i.e., for rates exactly approaching the threshold with along a specific scaling, the minimax and maximin values approach the same constant value, that is neither zero nor one. Critical to these results is our derivation of finite blocklength bounds on the minimax and maximin values of the game and our derivation of second order dispersion-based bounds." @default.
- W4288283661 created "2022-07-28" @default.
- W4288283661 creator A5069273068 @default.
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- W4288283661 date "2019-07-11" @default.
- W4288283661 modified "2023-10-14" @default.
- W4288283661 title "Minimax Theorems for Finite Blocklength Lossy Joint Source-Channel Coding over an AVC" @default.
- W4288283661 doi "https://doi.org/10.48550/arxiv.1907.05324" @default.
- W4288283661 hasPublicationYear "2019" @default.
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