The paper jointly optimizes BS and RIS beamforming against a full-duplex active eavesdropper using alternating WMMSE and semidefinite relaxation, and simulations show secrecy rate improvements from the RIS.
Physical Layer Security for Next Generation Wireless Networks: Theories, Technologies, and Challenges,
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Securing RIS-Aided Wireless Networks Against Full Duplex Active Eavesdropping
The paper jointly optimizes BS and RIS beamforming against a full-duplex active eavesdropper using alternating WMMSE and semidefinite relaxation, and simulations show secrecy rate improvements from the RIS.