Weighted Sum-Rate Maximization for Movable Antenna-Enhanced Wireless Networks
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866914755242885120 |
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| author | Feng, Biqian Wu, Yongpeng Xia, Xiang-Gen Xiao, Chengshan |
| author_facet | Feng, Biqian Wu, Yongpeng Xia, Xiang-Gen Xiao, Chengshan |
| contents | This letter investigates the weighted sum rate maximization problem in movable antenna (MA)-enhanced systems. To reduce the computational complexity, we transform it into a more tractable weighted minimum mean square error (WMMSE) problem well-suited for MA. We then adopt the WMMSE algorithm and majorization-minimization algorithm to optimize the beamforming and antenna positions, respectively. Moreover, we propose a planar movement mode, which constrains each MA to a specified area, we obtain a low-complexity closed-form solution. Numerical results demonstrate that the MA-enhanced system outperforms the conventional system. Besides, the computation time for the planar movement mode is reduced by approximately 30\% at a little performance expense. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_09734 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Weighted Sum-Rate Maximization for Movable Antenna-Enhanced Wireless Networks Feng, Biqian Wu, Yongpeng Xia, Xiang-Gen Xiao, Chengshan Information Theory Signal Processing This letter investigates the weighted sum rate maximization problem in movable antenna (MA)-enhanced systems. To reduce the computational complexity, we transform it into a more tractable weighted minimum mean square error (WMMSE) problem well-suited for MA. We then adopt the WMMSE algorithm and majorization-minimization algorithm to optimize the beamforming and antenna positions, respectively. Moreover, we propose a planar movement mode, which constrains each MA to a specified area, we obtain a low-complexity closed-form solution. Numerical results demonstrate that the MA-enhanced system outperforms the conventional system. Besides, the computation time for the planar movement mode is reduced by approximately 30\% at a little performance expense. |
| title | Weighted Sum-Rate Maximization for Movable Antenna-Enhanced Wireless Networks |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2404.09734 |