Multi-Stream Transmission in Cell-Free MIMO Networks with Coherent AP Clustering
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| author | Beyazıt, Esra Aycan Famaey, Jeroen Slamnik-Kriještorac, Nina Marquez-Barja, Johann M. Botero, Miguel Camelo |
| author_facet | Beyazıt, Esra Aycan Famaey, Jeroen Slamnik-Kriještorac, Nina Marquez-Barja, Johann M. Botero, Miguel Camelo |
| contents | This letter proposes a multi-stream selection framework for \ac{CF-MIMO} networks. Partially coherent transmission has been considered by clustering \acp{AP} into phase-aligned clusters to address the challenges of phase misalignment and inter-cluster interference. A novel stream selection algorithm is developed to dynamically allocate multiple streams to each multi-antenna \ac{UE}, ensuring that the system optimizes the sum rate while minimizing inter-cluster and inter-stream interference. Numerical results validate the effectiveness of the proposed method in enhancing spectral efficiency and fairness in distributed \ac{CF-MIMO} networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_10705 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Multi-Stream Transmission in Cell-Free MIMO Networks with Coherent AP Clustering Beyazıt, Esra Aycan Famaey, Jeroen Slamnik-Kriještorac, Nina Marquez-Barja, Johann M. Botero, Miguel Camelo Signal Processing This letter proposes a multi-stream selection framework for \ac{CF-MIMO} networks. Partially coherent transmission has been considered by clustering \acp{AP} into phase-aligned clusters to address the challenges of phase misalignment and inter-cluster interference. A novel stream selection algorithm is developed to dynamically allocate multiple streams to each multi-antenna \ac{UE}, ensuring that the system optimizes the sum rate while minimizing inter-cluster and inter-stream interference. Numerical results validate the effectiveness of the proposed method in enhancing spectral efficiency and fairness in distributed \ac{CF-MIMO} networks. |
| title | Multi-Stream Transmission in Cell-Free MIMO Networks with Coherent AP Clustering |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2504.10705 |