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• W2977242548 abstract "We study a symmetric Gaussian wiretap channel with a helper, where a confidential message is sent from a transmitter to a legitimate receiver, in the presence of a helper and an eavesdropper, under a weak notion of secrecy constraint. For this setting, we characterize the optimal secure generalized degrees-of-freedom (GDoF). The result reveals that, adding a helper can significantly increase the secure GDoF of the wiretap channel. The result is supported by a new converse and a new scheme. In the proposed scheme, the helper sends a cooperative jamming signal at a specific power level and direction. In this way, it minimizes the penalty in GDoF incurred by the secrecy constraint. In the secure rate analysis, the techniques of noise removal and signal separation are used." @default.
• W2977242548 created "2019-10-03" @default.
• W2977242548 creator A5079835481 @default.
• W2977242548 creator A5086957988 @default.
• W2977242548 date "2019-07-01" @default.
• W2977242548 modified "2023-09-26" @default.
• W2977242548 title "Optimal Secure GDoF of Symmetric Gaussian Wiretap Channel with a Helper" @default.
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• W2977242548 doi "https://doi.org/10.1109/isit.2019.8849358" @default.
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