Coding-Enhanced Cooperative Jamming for Secret Communication in Fluid Antenna Systems
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arXiv
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| Autores principales: | , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Acceso en línea: | |
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| _version_ | 1866911940935155712 |
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| author | Xu, Hao Wong, Kai-Kit New, Wee Kiat Li, Guyue Ghadi, Farshad Rostami Zhu, Yongxu Jin, Shi Chae, Chan-Byoung Zhang, Yangyang |
| author_facet | Xu, Hao Wong, Kai-Kit New, Wee Kiat Li, Guyue Ghadi, Farshad Rostami Zhu, Yongxu Jin, Shi Chae, Chan-Byoung Zhang, Yangyang |
| contents | This letter investigates the secret communication problem for a fluid antenna system (FAS)-assisted wiretap channel, where the legitimate transmitter transmits an information-bearing signal to the legitimate receiver, and at the same time, transmits a jamming signal to interfere with the eavesdropper (Eve). Unlike the conventional jamming scheme, which usually transmits Gaussian noise that interferes not only with Eve but also with the legitimate receiver, in this letter, we consider that encoded codewords are transmitted to jam Eve. Then, by employing appropriate coding schemes, the legitimate receiver can successfully decode the jamming signal and then cancel the interference, while Eve cannot, even if it knows the codebooks. We aim to maximize the secrecy rate through port selection and power control. Although the problem is non-convex, we show that the optimal solution can be found. Simulation results show that by using the FAS technique and the proposed jamming scheme, the secrecy rate of the system can be significantly increased. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_02400 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Coding-Enhanced Cooperative Jamming for Secret Communication in Fluid Antenna Systems Xu, Hao Wong, Kai-Kit New, Wee Kiat Li, Guyue Ghadi, Farshad Rostami Zhu, Yongxu Jin, Shi Chae, Chan-Byoung Zhang, Yangyang Information Theory Signal Processing This letter investigates the secret communication problem for a fluid antenna system (FAS)-assisted wiretap channel, where the legitimate transmitter transmits an information-bearing signal to the legitimate receiver, and at the same time, transmits a jamming signal to interfere with the eavesdropper (Eve). Unlike the conventional jamming scheme, which usually transmits Gaussian noise that interferes not only with Eve but also with the legitimate receiver, in this letter, we consider that encoded codewords are transmitted to jam Eve. Then, by employing appropriate coding schemes, the legitimate receiver can successfully decode the jamming signal and then cancel the interference, while Eve cannot, even if it knows the codebooks. We aim to maximize the secrecy rate through port selection and power control. Although the problem is non-convex, we show that the optimal solution can be found. Simulation results show that by using the FAS technique and the proposed jamming scheme, the secrecy rate of the system can be significantly increased. |
| title | Coding-Enhanced Cooperative Jamming for Secret Communication in Fluid Antenna Systems |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2407.02400 |