E. N. Egashira, D. P. M. Osorio, N. T. Nguyen and M. Juntti, "Secrecy Capacity Maximization for a Hybrid Relay-RIS Scheme in mmWave MIMO Networks," 2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring), 2022, pp. 1-6, doi: 10.1109/VTC2022-Spring54318.2022.9860450.
Secrecy capacity maximization for a hybrid relay-RIS scheme in mmWave MIMO networks
|Author:||Egashira, Edson Nobuyuki1; Osorio, Diana Pamela Moya1; Nguyen, Nhan Thanh1;|
1Centre for Wireless Communications, University of Oulu, P.O.Box 4500, FI-90014, Finland
|Online Access:||PDF Full Text (PDF, 0.4 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2022091258396
Institute of Electrical and Electronics Engineers,
|Publish Date:|| 2022-09-12
The hybrid relay-reflecting intelligent surface (HRRIS) has been recently introduced as an efficient solution to overcome the double path loss and limited beamforming diversity of the conventional fully passive reflecting surface. This motivates us to investigate the application of the HR-RIS in improving the secrecy capacity of millimeter wave multiple-input-multiple-output (MIMO) systems with the presence of multi-antenna eavesdropper. The joint optimization of the transmit beamformer and the relay-reflecting coefficients at RIS is tackled via alternating optimization. In the proposed solution, a closed-form expression for the optimal transmit beamformer at the transmitter is derived, and a metaheuristic solution based on particle swarm optimization is proposed to optimize the active and passive elements at the HR-RIS. The simulation results verify that under various scenarios, the HR-RIS provides significant improvement in the secrecy capacity with respect to the conventional passive reflecting surface.
IEEE Vehicular Technology Conference
|Pages:||1 - 6|
2022 IEEE 95th vehicular technology conference: (VTC2022-Spring), 19-22 June 2022, Helsinki, Finland
2022 IEEE 95th vehicular technology conference (VTC2022-Spring)
|Type of Publication:||
A4 Article in conference proceedings
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
This work has been supported in part by Academy of Finland, 6G Flagship program (Grant 346208), FAITH Project (Grant 334280), as well as Infotech of Oulu Graduate School.
|Academy of Finland Grant Number:||
346208 (Academy of Finland Funding decision)
334280 (Academy of Finland Funding decision)
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