标题： 关于增强型子集贪婪多用户调度的全细胞无蜂窝大规模MIMO系统研究 显示英文标题

标题： Study of Enhanced Subset Greedy Multiuser Scheduling for Cell-Free Massive MIMO Systems

摘要： 本文研究了带聚类的全频 Massive MIMO 下行链路多用户调度问题。特别地，我们基于增强的贪心算法开发了一种多用户调度算法，并结合了线性预编码和聚类技术。当考虑不完美信道状态信息时，推导出了总速率性能的闭式表达式。然后，分析了所提出的调度算法及其计算成本和网络信令负载。数值结果表明，所提出的调度方法优于现有方法，在低信噪比情况下，其性能更接近于最优方法。 显示英文摘要

摘要： In this work, we consider the problem of multiuser scheduling for the downlink of cell-free massive multi-input multi-output networks with clustering. In particular, we develop a multiuser scheduling algorithm based on an enhanced greedy method that is deployed with linear precoding and clustering. Closed-form expressions for the sum-rate performance are derived when imperfect channel state information is considered. The proposed scheduling algorithm is then analyzed along with its computational cost and network signaling load. Numerical results show that the proposed scheduling method outperforms the existing methods and in low signal-to-noise ratios, its performance becomes much closer to the optimal approach.