Low-Complexity Distance-Based Scheduling for Multi-User XL-MIMO Systems
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2021
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| _version_ | 1866909365309538304 |
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| author | González-Coma, José P. López-Martínez, F. Javier Castedo, Luis |
| author_facet | González-Coma, José P. López-Martínez, F. Javier Castedo, Luis |
| contents | We introduce DBS, a new technique for user selection in downlink multi-user communications with extra-large (XL) antenna arrays. DBS categorizes users according to their equivalent distance to the antenna array. Such categorization effectively accounts for inter-user interference while largely reducing the computational burden. Results show that (i) DBS achieves the same performance as the reference zero-forcing beamforming scheme with a lower complexity; (ii) a simplified version of DBS achieves a similar performance when realistic spherical-wavefront (SW) propagation features are considered; (iii) SW propagation brings additional degrees of freedom, which allows for increasing the number of served users. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2104_13690 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Low-Complexity Distance-Based Scheduling for Multi-User XL-MIMO Systems González-Coma, José P. López-Martínez, F. Javier Castedo, Luis Information Theory Signal Processing We introduce DBS, a new technique for user selection in downlink multi-user communications with extra-large (XL) antenna arrays. DBS categorizes users according to their equivalent distance to the antenna array. Such categorization effectively accounts for inter-user interference while largely reducing the computational burden. Results show that (i) DBS achieves the same performance as the reference zero-forcing beamforming scheme with a lower complexity; (ii) a simplified version of DBS achieves a similar performance when realistic spherical-wavefront (SW) propagation features are considered; (iii) SW propagation brings additional degrees of freedom, which allows for increasing the number of served users. |
| title | Low-Complexity Distance-Based Scheduling for Multi-User XL-MIMO Systems |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2104.13690 |