论文标题
动态元面天线的性能评估：插入损失和耦合的影响
Performance Evaluation of Dynamic Metasurface Antennas: Impact of Insertion Losses and Coupling
论文作者
论文摘要
本文评估了多用户大量多输入多输出（MIMO）系统的性能，其中基站配备了动态的元面天线（DMA）。由于DMA的物理实施，在MIMO中广泛使用的常规模型不再有效，需要考虑电磁现象，例如相互耦合，插入损失和波导中的反射。因此，从最近提出的DMA电磁模型开始，我们制定了一个零强度的优化问题，从而产生了具有已知梯度的不受约束的客观函数。将性能与全数字和杂种大型MIMO进行比较，重点是插入损失和相互耦合的影响。
This paper evaluates the performance of multi-user massive multiple-input multiple-output (MIMO) systems in which the base station is equipped with a dynamic metasurface antenna (DMA). Due to the physical implementation of DMAs, conventional models widely-used in MIMO are no longer valid, and electromagnetic phenomena such as mutual coupling, insertion losses and reflections inside the waveguides need to be considered. Hence, starting from a recently proposed electromagnetic model for DMAs, we formulate a zero-forcing optimization problem, yielding an unconstrained objective function with known gradient. The performance is compared with that of full-digital and hybrid massive MIMO, focusing on the impact of insertion losses and mutual coupling.
