Meta Fluid Antenna: Architecture Design, Performance Analysis, Experimental Examination
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arXiv
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| Autori principali: | , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866915510362308608 |
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| author | Liu, Baiyang Huang, Jiewei Wu, Tuo Meng, Huan Mei, Fengcheng Ning, Lei Wong, Kai-Kit Wong, Hang Tong, Kin-Fai Luk, Kwai-Man |
| author_facet | Liu, Baiyang Huang, Jiewei Wu, Tuo Meng, Huan Mei, Fengcheng Ning, Lei Wong, Kai-Kit Wong, Hang Tong, Kin-Fai Luk, Kwai-Man |
| contents | Fluid antenna systems (FAS) have recently emerged as a promising solution for sixth-generation (6G) ultra-dense connectivity. These systems utilize dynamic radiating and/or shaping techniques to mitigate interference and improve spectral efficiency without relying on channel state information (CSI). The reported improvements achieved by employing a single dynamically activated radiating position in fluid antenna multiple access (FAMA) are significant. To fully realize the potential of FAMA in multi-user multiplexing, we propose leveraging the unique fast-switching capabilities of a single radio-frequency (RF)-chain meta-fluid antenna structure to achieve multi-activation. This allows for a significantly larger set of independent radiating states without requiring additional signal processing. Simulations demonstrate that multi-activation FAMA enables robust multi-user multiplexing with a higher signal-to-interference ratio (SIR) under various Rayleigh-fading environments compared to other single RF-chain technologies. We further show that the SIR can be optimized within a 15~$μs$ timeframe under a multi-user Rayleigh-fading channel, making the proposed scheme highly suitable for fast-changing wireless environments. Verified through the theoretical Jakes' model, full three-dimensional (3D) electromagnetic (EM) simulations and experimental validation, multi-activation FAMA enables effective CSI-free, multi-user communication, offering a scalable solution for high-capacity wireless networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_12032 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Meta Fluid Antenna: Architecture Design, Performance Analysis, Experimental Examination Liu, Baiyang Huang, Jiewei Wu, Tuo Meng, Huan Mei, Fengcheng Ning, Lei Wong, Kai-Kit Wong, Hang Tong, Kin-Fai Luk, Kwai-Man Signal Processing Fluid antenna systems (FAS) have recently emerged as a promising solution for sixth-generation (6G) ultra-dense connectivity. These systems utilize dynamic radiating and/or shaping techniques to mitigate interference and improve spectral efficiency without relying on channel state information (CSI). The reported improvements achieved by employing a single dynamically activated radiating position in fluid antenna multiple access (FAMA) are significant. To fully realize the potential of FAMA in multi-user multiplexing, we propose leveraging the unique fast-switching capabilities of a single radio-frequency (RF)-chain meta-fluid antenna structure to achieve multi-activation. This allows for a significantly larger set of independent radiating states without requiring additional signal processing. Simulations demonstrate that multi-activation FAMA enables robust multi-user multiplexing with a higher signal-to-interference ratio (SIR) under various Rayleigh-fading environments compared to other single RF-chain technologies. We further show that the SIR can be optimized within a 15~$μs$ timeframe under a multi-user Rayleigh-fading channel, making the proposed scheme highly suitable for fast-changing wireless environments. Verified through the theoretical Jakes' model, full three-dimensional (3D) electromagnetic (EM) simulations and experimental validation, multi-activation FAMA enables effective CSI-free, multi-user communication, offering a scalable solution for high-capacity wireless networks. |
| title | Meta Fluid Antenna: Architecture Design, Performance Analysis, Experimental Examination |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2509.12032 |