Antenna Positioning and Beamforming Design for Fluid-Antenna Enabled Multi-user Downlink Communications
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866911757953400832 |
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| author | Qin, Haoran Chen, Wen Li, Zhendong Wu, Qingqing Cheng, Nan Chen, Fangjiong |
| author_facet | Qin, Haoran Chen, Wen Li, Zhendong Wu, Qingqing Cheng, Nan Chen, Fangjiong |
| contents | This paper investigates a multiple input single output (MISO) downlink communication system in which users are equipped with fluid antennas (FAs). First, we adopt a field-response based channel model to characterize the downlink channel with respect to FAs' positions. Then, we aim to minimize the total transmit power by jointly optimizing the FAs' positions and beamforming matrix. To solve the resulting non-convex problem, we employ an alternating optimization (AO) algorithm based on penalty method and successive convex approximation (SCA) to obtain a sub-optimal solution. Numerical results demonstrate that the FA-assisted communication system performs better than conventional fixed position antennas system. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_03046 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Antenna Positioning and Beamforming Design for Fluid-Antenna Enabled Multi-user Downlink Communications Qin, Haoran Chen, Wen Li, Zhendong Wu, Qingqing Cheng, Nan Chen, Fangjiong Information Theory Signal Processing This paper investigates a multiple input single output (MISO) downlink communication system in which users are equipped with fluid antennas (FAs). First, we adopt a field-response based channel model to characterize the downlink channel with respect to FAs' positions. Then, we aim to minimize the total transmit power by jointly optimizing the FAs' positions and beamforming matrix. To solve the resulting non-convex problem, we employ an alternating optimization (AO) algorithm based on penalty method and successive convex approximation (SCA) to obtain a sub-optimal solution. Numerical results demonstrate that the FA-assisted communication system performs better than conventional fixed position antennas system. |
| title | Antenna Positioning and Beamforming Design for Fluid-Antenna Enabled Multi-user Downlink Communications |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2311.03046 |