Joint Beamforming and Antenna Design for Near-Field Fluid Antenna System
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866913584285483008 |
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| author | Chen, Yixuan Chen, Mingzhe Xu, Hao Yang, Zhaohui Wong, Kai-Kit Zhang, Zhaoyang |
| author_facet | Chen, Yixuan Chen, Mingzhe Xu, Hao Yang, Zhaohui Wong, Kai-Kit Zhang, Zhaoyang |
| contents | In this letter, we study the energy efficiency maximization problem for a fluid antenna system (FAS) in near field communications. Specifically, we consider a point-to-point near-field system where the base station (BS) transmitter has multiple fixed-position antennas and the user receives the signals with multiple fluid antennas. Our objective is to jointly optimize the transmit beamforming of the BS and the fluid antenna positions at the user for maximizing the energy efficiency. Our scheme is based on an alternating optimization algorithm that iteratively solves the beamforming and antenna position subproblems. Our simulation results validate the performance improvement of the proposed algorithm and confirm the effectiveness of FAS. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_05791 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Joint Beamforming and Antenna Design for Near-Field Fluid Antenna System Chen, Yixuan Chen, Mingzhe Xu, Hao Yang, Zhaohui Wong, Kai-Kit Zhang, Zhaoyang Signal Processing In this letter, we study the energy efficiency maximization problem for a fluid antenna system (FAS) in near field communications. Specifically, we consider a point-to-point near-field system where the base station (BS) transmitter has multiple fixed-position antennas and the user receives the signals with multiple fluid antennas. Our objective is to jointly optimize the transmit beamforming of the BS and the fluid antenna positions at the user for maximizing the energy efficiency. Our scheme is based on an alternating optimization algorithm that iteratively solves the beamforming and antenna position subproblems. Our simulation results validate the performance improvement of the proposed algorithm and confirm the effectiveness of FAS. |
| title | Joint Beamforming and Antenna Design for Near-Field Fluid Antenna System |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2407.05791 |