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• W3215692849 abstract "In this article, we consider a practical scenario for secure wireless-powered communication in the presence of imperfect channel state information (CSI) with simultaneous energy harvesting, in which it is required to keep information secret from an untrusted energy receiver allowed only to harvest energy from the transmitted signals. We aim to find the robust transmit power control (TPC) strategy to maximize the secrecy rate whilst ensuring the spectral efficiency of transceiver pairs and the amount of energy harvested by the energy receiver, even when the CSI is inaccurate. To deal with the nonconvexity of the formulated optimization problem, we first derive a suboptimal form of TPC in an iterative manner by adopting dual methods. In order to overcome the drawbacks of the conventional optimization-based approach regarding the suboptimality of performance and requiring long computation time, we devise a deep learning (DL)-assisted TPC as an alternative means of deriving the TPC. In the considered DL-assisted TPC, a deep neural network (DNN) is trained to compensate for the distortion caused by channel errors in an unsupervised manner. More specifically, artificially distorted CSI, which reflects the difference between actual and estimated CSI, is fed into the DNN during training and used to update the weights and biases of the proposed DNN using a bounded loss function, which allows a robust TPC strategy to be approximated by the DNN. Simulation results reveal the robustness of the proposed DL-assisted TPC against channel errors, such that it achieves a near-optimal performance with a lower computation time, even when the CSI is incorrect." @default.
• W3215692849 created "2021-12-06" @default.
• W3215692849 creator A5030858163 @default.
• W3215692849 creator A5057269433 @default.
• W3215692849 creator A5066939022 @default.
• W3215692849 date "2022-07-01" @default.
• W3215692849 modified "2023-10-18" @default.
• W3215692849 title "Deep-Learning-Assisted Wireless-Powered Secure Communications With Imperfect Channel State Information" @default.
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• W3215692849 doi "https://doi.org/10.1109/jiot.2021.3128936" @default.
• W3215692849 hasPublicationYear "2022" @default.
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