Performance optimization of physical layer security in STAR-RIS aided NOMA system
The strong coupling characteristics of the imperfect channel state information and the imperfect successive interference cancellation makes it faces the great challenge in evaluating the secure performance accurately for the simultaneously transmitting and reflecting reconfigurable intelligent surfa...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2024-05-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2024094/ |
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| _version_ | 1841539202266693632 |
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| author | LI Meiling WANG Yumin WANG Sijing ZHANG Haijun |
| author_facet | LI Meiling WANG Yumin WANG Sijing ZHANG Haijun |
| author_sort | LI Meiling |
| collection | DOAJ |
| description | The strong coupling characteristics of the imperfect channel state information and the imperfect successive interference cancellation makes it faces the great challenge in evaluating the secure performance accurately for the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided non-orthogonal multiple access (NOMA) transmission systems. To address this issue, a mixed algorithm based on penalty dual decomposition (PDD) and block coordinate descent (BCD) was proposed for optimizing the beamforming vectors at the base station and the phase-shift coefficients of the STAR-RIS jointly, aiming to maximize the minimum secure transmission rate of the system. The results demonstrate that minimum secure transmission rate can be significantly enhanced by the proposed mixed algorithm compared to that by BCD algorithm, achieving the performance improvement by at least 10%. |
| format | Article |
| id | doaj-art-70fa2371603d4d5face8134917c4a18a |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2024-05-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-70fa2371603d4d5face8134917c4a18a2025-01-14T07:24:22ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2024-05-014521422562276641Performance optimization of physical layer security in STAR-RIS aided NOMA systemLI MeilingWANG YuminWANG SijingZHANG HaijunThe strong coupling characteristics of the imperfect channel state information and the imperfect successive interference cancellation makes it faces the great challenge in evaluating the secure performance accurately for the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided non-orthogonal multiple access (NOMA) transmission systems. To address this issue, a mixed algorithm based on penalty dual decomposition (PDD) and block coordinate descent (BCD) was proposed for optimizing the beamforming vectors at the base station and the phase-shift coefficients of the STAR-RIS jointly, aiming to maximize the minimum secure transmission rate of the system. The results demonstrate that minimum secure transmission rate can be significantly enhanced by the proposed mixed algorithm compared to that by BCD algorithm, achieving the performance improvement by at least 10%.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2024094/simultaneously transmitting and reflecting reconfigurable intelligent surfacenon-orthgonal multiple accessphysical layer securityblock coordinate descentpenalty dual decomposition |
| spellingShingle | LI Meiling WANG Yumin WANG Sijing ZHANG Haijun Performance optimization of physical layer security in STAR-RIS aided NOMA system Tongxin xuebao simultaneously transmitting and reflecting reconfigurable intelligent surface non-orthgonal multiple access physical layer security block coordinate descent penalty dual decomposition |
| title | Performance optimization of physical layer security in STAR-RIS aided NOMA system |
| title_full | Performance optimization of physical layer security in STAR-RIS aided NOMA system |
| title_fullStr | Performance optimization of physical layer security in STAR-RIS aided NOMA system |
| title_full_unstemmed | Performance optimization of physical layer security in STAR-RIS aided NOMA system |
| title_short | Performance optimization of physical layer security in STAR-RIS aided NOMA system |
| title_sort | performance optimization of physical layer security in star ris aided noma system |
| topic | simultaneously transmitting and reflecting reconfigurable intelligent surface non-orthgonal multiple access physical layer security block coordinate descent penalty dual decomposition |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2024094/ |
| work_keys_str_mv | AT limeiling performanceoptimizationofphysicallayersecurityinstarrisaidednomasystem AT wangyumin performanceoptimizationofphysicallayersecurityinstarrisaidednomasystem AT wangsijing performanceoptimizationofphysicallayersecurityinstarrisaidednomasystem AT zhanghaijun performanceoptimizationofphysicallayersecurityinstarrisaidednomasystem |