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arXiv · 2104.13690

Low-Complexity Distance-Based Scheduling for Multi-User XL-MIMO Systems

José P. González-Coma·F. Javier López-Martínez·Luis Castedo
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Abstract

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.

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José P. González-Coma, F. Javier López-Martínez, Luis Castedo. 2021-04-28. Low-Complexity Distance-Based Scheduling for Multi-User XL-MIMO Systems. https://doi.org/10.1109/lwc.2021.3101940

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