Decentralizing Coherent Joint Transmission Precoding via Deterministic Equivalents
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
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| _version_ | 1866909137816780800 |
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| author | Liu, Yuhao Bian, Xinyu Xu, Yizhou Hou, Tianqi Wang, Wenjie Mao, Yuyi Zhang, Jun |
| author_facet | Liu, Yuhao Bian, Xinyu Xu, Yizhou Hou, Tianqi Wang, Wenjie Mao, Yuyi Zhang, Jun |
| contents | In order to control the inter-cell interference for a multi-cell multi-user multiple-input multiple-output network, we consider the precoder design for coordinated multi-point with downlink coherent joint transmission. To avoid costly information exchange among the cooperating base stations in a centralized precoding scheme, we propose a decentralized one by considering the power minimization problem. By approximating the inter-cell interference using the deterministic equivalents, this problem is decoupled to sub-problems which are solved in a decentralized manner at different base stations. Simulation results demonstrate the effectiveness of our proposed decentralized precoding scheme, where only 2 ~ 7% more transmit power is needed compared with the optimal centralized precoder. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_09958 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Decentralizing Coherent Joint Transmission Precoding via Deterministic Equivalents Liu, Yuhao Bian, Xinyu Xu, Yizhou Hou, Tianqi Wang, Wenjie Mao, Yuyi Zhang, Jun Signal Processing Information Theory In order to control the inter-cell interference for a multi-cell multi-user multiple-input multiple-output network, we consider the precoder design for coordinated multi-point with downlink coherent joint transmission. To avoid costly information exchange among the cooperating base stations in a centralized precoding scheme, we propose a decentralized one by considering the power minimization problem. By approximating the inter-cell interference using the deterministic equivalents, this problem is decoupled to sub-problems which are solved in a decentralized manner at different base stations. Simulation results demonstrate the effectiveness of our proposed decentralized precoding scheme, where only 2 ~ 7% more transmit power is needed compared with the optimal centralized precoder. |
| title | Decentralizing Coherent Joint Transmission Precoding via Deterministic Equivalents |
| topic | Signal Processing Information Theory |
| url | https://arxiv.org/abs/2403.09958 |