Robust Secure Resource Allocation for RIS-Aided SWIPT Communication Systems
Aiming at the influence of channel uncertainty, user information leakage and harvested energy improvement, this paper proposes a robust resource allocation algorithm for reconfigurable intelligent reflector (RIS) multiple-input single-output systems based on imperfect channel state information. Firs...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/21/8274 |
| _version_ | 1797466536320958464 |
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| author | Bencheng Yu Zihui Ren Shoufeng Tang |
| author_facet | Bencheng Yu Zihui Ren Shoufeng Tang |
| author_sort | Bencheng Yu |
| collection | DOAJ |
| description | Aiming at the influence of channel uncertainty, user information leakage and harvested energy improvement, this paper proposes a robust resource allocation algorithm for reconfigurable intelligent reflector (RIS) multiple-input single-output systems based on imperfect channel state information. First, considering the legal user minimum secret rate constraint, the base station maximum transmit power constraint and the RIS phase shift constraint with the bounded channel uncertainty, a joint optimization of the base station active beam, energy beam and RIS phase shift is established. A multivariate coupled nonlinear resource allocation problem for matrices is addressed. Then, using S-procedure and alternating optimization methods, the original non-convex problem is transformed into a deterministic convex optimization problem and an alternating optimization algorithm based on continuous convex approximation is proposed. The simulation results show that the proposed algorithm has better fairness harvested energy compared with the traditional robust algorithm. |
| first_indexed | 2024-03-09T18:40:13Z |
| format | Article |
| id | doaj.art-87a150bd31424216a5799e5d809b6eeb |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T18:40:13Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-87a150bd31424216a5799e5d809b6eeb2023-11-24T06:45:36ZengMDPI AGSensors1424-82202022-10-012221827410.3390/s22218274Robust Secure Resource Allocation for RIS-Aided SWIPT Communication SystemsBencheng Yu0Zihui Ren1Shoufeng Tang2School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaAiming at the influence of channel uncertainty, user information leakage and harvested energy improvement, this paper proposes a robust resource allocation algorithm for reconfigurable intelligent reflector (RIS) multiple-input single-output systems based on imperfect channel state information. First, considering the legal user minimum secret rate constraint, the base station maximum transmit power constraint and the RIS phase shift constraint with the bounded channel uncertainty, a joint optimization of the base station active beam, energy beam and RIS phase shift is established. A multivariate coupled nonlinear resource allocation problem for matrices is addressed. Then, using S-procedure and alternating optimization methods, the original non-convex problem is transformed into a deterministic convex optimization problem and an alternating optimization algorithm based on continuous convex approximation is proposed. The simulation results show that the proposed algorithm has better fairness harvested energy compared with the traditional robust algorithm.https://www.mdpi.com/1424-8220/22/21/8274channel uncertaintyinformation leakageharvested energyRIS |
| spellingShingle | Bencheng Yu Zihui Ren Shoufeng Tang Robust Secure Resource Allocation for RIS-Aided SWIPT Communication Systems Sensors channel uncertainty information leakage harvested energy RIS |
| title | Robust Secure Resource Allocation for RIS-Aided SWIPT Communication Systems |
| title_full | Robust Secure Resource Allocation for RIS-Aided SWIPT Communication Systems |
| title_fullStr | Robust Secure Resource Allocation for RIS-Aided SWIPT Communication Systems |
| title_full_unstemmed | Robust Secure Resource Allocation for RIS-Aided SWIPT Communication Systems |
| title_short | Robust Secure Resource Allocation for RIS-Aided SWIPT Communication Systems |
| title_sort | robust secure resource allocation for ris aided swipt communication systems |
| topic | channel uncertainty information leakage harvested energy RIS |
| url | https://www.mdpi.com/1424-8220/22/21/8274 |
| work_keys_str_mv | AT benchengyu robustsecureresourceallocationforrisaidedswiptcommunicationsystems AT zihuiren robustsecureresourceallocationforrisaidedswiptcommunicationsystems AT shoufengtang robustsecureresourceallocationforrisaidedswiptcommunicationsystems |