We introduce Distance-Based Scheduling (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{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.

中文翻译：

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多用户 XL-MIMO 系统的低复杂度基于距离的调度


我们介绍了基于距离的调度（DBS），这是一种在具有超大（XL）天线阵列的下行链路多用户通信中进行用户选择的新技术。 DBS根据用户到天线阵列的等效距离对用户进行分类。这种分类有效地解决了用户间的干扰，同时大大减少了计算负担。结果表明( i{i} ) DBS以较低的复杂度实现了与参考迫零波束形成方案相同的性能； (ii) 当考虑真实的球面波前 (SW) 传播特征时，DBS 的简化版本实现了类似的性能； (iii) 软件传播带来了额外的自由度，从而可以增加所服务的用户数量。