We propose new low-fidelity (LoFi) user equipment (UE) scheduling algorithms for multiuser multiple-input multiple-output (MIMO) wireless communication systems. The proposed methods rely on an efficient guess-and-check procedure that, given an objective function, performs paired comparisons between random subsets of UEs that should be scheduled in certain time slots. The proposed LoFi scheduling methods are computationally efficient, highly parallelizable, and gradient-free, which enables the use of almost arbitrary, non-differentiable objective functions. System simulations in a millimeter-wave (mmWave) multiuser MIMO scenario demonstrate that the proposed LoFi schedulers outperform a range of state-of-the-art user scheduling algorithms in terms of bit error-rate and/or computational complexity.

翻译：针对多用户多输入多输出（MIMO）无线通信系统，我们提出了一种新的低保真度（LoFi）用户设备（UE）调度算法。所提出的方法基于一种高效的猜测-校验机制：在给定目标函数的情况下，对应在特定时隙调度的UE随机子集执行配对比较。所提出的LoFi调度方法具有计算高效、高度可并行化以及无需梯度的特点，这使得几乎任意不可微分目标函数均可被采用。在毫米波（mmWave）多用户MIMO场景下的系统仿真表明，所提出的LoFi调度器在误码率和/或计算复杂度方面优于一系列最先进的用户调度算法。