Joint Beamforming for STAR-RIS in Near-Field Communications
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866909421869727744 |
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| author | Haochen, Li Liu, Yuanwei Mu, Xidong Chen, Yue Zhiwen, Pan |
| author_facet | Haochen, Li Liu, Yuanwei Mu, Xidong Chen, Yue Zhiwen, Pan |
| contents | A simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided near-field multiple-input multiple-output (MIMO) communication framework is proposed. A weighted sum rate maximization problem for the joint optimization of the active beamforming at the base station (BS) and the transmission/reflection-coefficients (TRCs) at the STAR-RIS is formulated. The resulting non-convex problem is solved by the developed block coordinate descent (BCD)-based algorithm. Numerical results illustrate that the near-field beamforming for the STAR-RIS aided MIMO communications significantly improve the achieved weighted sum rate. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_06817 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Joint Beamforming for STAR-RIS in Near-Field Communications Haochen, Li Liu, Yuanwei Mu, Xidong Chen, Yue Zhiwen, Pan Signal Processing A simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided near-field multiple-input multiple-output (MIMO) communication framework is proposed. A weighted sum rate maximization problem for the joint optimization of the active beamforming at the base station (BS) and the transmission/reflection-coefficients (TRCs) at the STAR-RIS is formulated. The resulting non-convex problem is solved by the developed block coordinate descent (BCD)-based algorithm. Numerical results illustrate that the near-field beamforming for the STAR-RIS aided MIMO communications significantly improve the achieved weighted sum rate. |
| title | Joint Beamforming for STAR-RIS in Near-Field Communications |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2412.06817 |