Active Simultaneously Transmitting and Reflecting Reconfigurable Intelligent Surface Assisted Multi-user Security Communication with Coupled Phase Shift

HAO Wanming; ZENG Qi; WANG Fang; YANG Shouyi

doi:10.11999/JEIT240149

Volume 46 Issue 9

Sep. 2024

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Article Navigation > Journal of Electronics & Information Technology > 2024 > 46(9): 3544-3552

HAO Wanming, ZENG Qi, WANG Fang, YANG Shouyi. Active Simultaneously Transmitting and Reflecting Reconfigurable Intelligent Surface Assisted Multi-user Security Communication with Coupled Phase Shift[J]. Journal of Electronics & Information Technology, 2024, 46(9): 3544-3552. doi: 10.11999/JEIT240149

Citation:

HAO Wanming, ZENG Qi, WANG Fang, YANG Shouyi. Active Simultaneously Transmitting and Reflecting Reconfigurable Intelligent Surface Assisted Multi-user Security Communication with Coupled Phase Shift[J]. Journal of Electronics & Information Technology, 2024, 46(9): 3544-3552. doi: 10.11999/JEIT240149

Citation:

HAO Wanming, ZENG Qi, WANG Fang, YANG Shouyi. Active Simultaneously Transmitting and Reflecting Reconfigurable Intelligent Surface Assisted Multi-user Security Communication with Coupled Phase Shift[J]. Journal of Electronics & Information Technology, 2024, 46(9): 3544-3552. doi: 10.11999/JEIT240149

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Active Simultaneously Transmitting and Reflecting Reconfigurable Intelligent Surface Assisted Multi-user Security Communication with Coupled Phase Shift

doi: 10.11999/JEIT240149

HAO Wanming^{1, 2
,
,},
ZENG Qi¹,
WANG Fang¹,
YANG Shouyi¹

1.
School of Information Engineering, Zhengzhou University, Zhengzhou 450001, China
2.
National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China

Funds: The National Natural Science Foundation of China (62101499), The Open Research Fund of National Mobile Communications Research Laboratory, Southeast University (2024D12)

Received Date: 2024-03-07
Rev Recd Date: 2024-05-14

Available Online: 2024-05-24

Publish Date: 2024-09-26

Abstract

Abstract

Passive intelligent reflecting surfaces hold great potential in enhancing wireless communication systems and improving physical layer security, but they suffer from significant drawbacks such as “double fading” and partial coverage. Therefore, an active Simultaneously Transmitting And Reflecting Reconfigurable Intelligent Surface (STAR-RIS) is conducted in this paper. Considering the coupling between reflection and transmission phase shifts, a joint optimization problem for maximizing the security energy efficiency of base station beams and active STAR-RIS beams is formulated. To solve the resulting non-convex optimization problem, continuous convex approximation, penalty function method, semi-definite relaxation, and alternating optimization techniques are employed to transform the original problem into a convex one. Additionally, a penalty dual decomposition algorithm is proposed. Simulation results validate the effectiveness of the algorithm proposed in this paper.
- Intelligent reflecting surface,
- Physical layer security,
- Security-energy efficiency maximization,
- Coupled phase-shift

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References(27)

References

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