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• W4280490829 abstract "Key generation rate and bit disagreement ratio are two main indicators to evaluate the performance of physical layer key generation (PLKG). This work explores the key generation performance in reconfigurable intelligent surface (RIS)-assisted PLKG, where a concrete scheme of key generation is proposed. Specifically, we first deduce the key generation rate expression based on estimation theory in RIS-assisted PLKG. Then we optimize the RIS reflecting coefficients with instantaneous channel state information to maximize the key generation rate. Finally, aiming at minimizing transmit power while guaranteeing key generation rate target, we formulate a power minimization problem in RIS-assisted PLKG. An alternating optimization algorithm is applied to solve the non-convex mixed-integer nonlinear programming. Simulation results demonstrate that the key generation rate of the proposed scheme is up to 197.5% higher than the existing relay-assisted scheme, and we successfully reduce the required transmit power by at least 6.6 dBm than without power minimization scheme." @default.
• W4280490829 created "2022-05-22" @default.
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• W4280490829 date "2022-04-10" @default.
• W4280490829 modified "2023-09-24" @default.
• W4280490829 title "RIS-Assisted Physical Layer Key Generation and Transmit Power Minimization" @default.
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• W4280490829 doi "https://doi.org/10.1109/wcnc51071.2022.9771815" @default.
• W4280490829 hasPublicationYear "2022" @default.
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