Fluid Antenna-Assisted MIMO Transmission Exploiting Statistical CSI
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866909065757589504 |
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| author | Ye, Yuqi You, Li Wang, Jue Xu, Hao Wong, Kai-Kit Gao, Xiqi |
| author_facet | Ye, Yuqi You, Li Wang, Jue Xu, Hao Wong, Kai-Kit Gao, Xiqi |
| contents | In conventional multiple-input multiple-output (MIMO) communication systems, the positions of antennas are fixed. To take full advantage of spatial degrees of freedom, a new technology called fluid antenna (FA) is proposed to obtain higher achievable rate and diversity gain. Most existing works on FA exploit instantaneous channel state information (CSI). However, in FA-assisted systems, it is difficult to obtain instantaneous CSI since changes in the antenna position will lead to channel variation. In this letter, we investigate a FA-assisted MIMO system using relatively slow-varying statistical CSI. Specifically, in the criterion of rate maximization, we propose an algorithmic framework for transmit precoding and transmit/receive FAs position designs with statistical CSI. Simulation results show that our proposed algorithm in FA-assisted systems significantly outperforms baselines in terms of rate performance. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_07895 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Fluid Antenna-Assisted MIMO Transmission Exploiting Statistical CSI Ye, Yuqi You, Li Wang, Jue Xu, Hao Wong, Kai-Kit Gao, Xiqi Information Theory Signal Processing In conventional multiple-input multiple-output (MIMO) communication systems, the positions of antennas are fixed. To take full advantage of spatial degrees of freedom, a new technology called fluid antenna (FA) is proposed to obtain higher achievable rate and diversity gain. Most existing works on FA exploit instantaneous channel state information (CSI). However, in FA-assisted systems, it is difficult to obtain instantaneous CSI since changes in the antenna position will lead to channel variation. In this letter, we investigate a FA-assisted MIMO system using relatively slow-varying statistical CSI. Specifically, in the criterion of rate maximization, we propose an algorithmic framework for transmit precoding and transmit/receive FAs position designs with statistical CSI. Simulation results show that our proposed algorithm in FA-assisted systems significantly outperforms baselines in terms of rate performance. |
| title | Fluid Antenna-Assisted MIMO Transmission Exploiting Statistical CSI |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2312.07895 |