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• W2893082680 abstract "Covert communication aims to hide the existence of the transmissions to guarantee the security in wireless communications. In this letter, channel uncertainty is exploited to achieve covert communication in relay networks. The transmitter Alice sends messages to the legitimate receiver Bob with the help of a relay, while the warden Willie wants to detect the existence of the transmission. The channel uncertainty introduces confusions to degrade the performance of Willie's detection. We show that Alice can transmit ${O}$ (${n}$ ) bits in ${n}$ channel uses covertly with the help of relay and channel uncertainty. Numerical results are shown to illustrate the achievability and the performance of the considered scenario." @default.
• W2893082680 created "2018-10-05" @default.
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• W2893082680 date "2019-02-01" @default.
• W2893082680 modified "2023-10-09" @default.
• W2893082680 title "Covert Communication With the Help of Relay and Channel Uncertainty" @default.
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• W2893082680 doi "https://doi.org/10.1109/lwc.2018.2872058" @default.
• W2893082680 hasPublicationYear "2019" @default.
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