In this paper, we present a simultaneous target tracking and multi-user communications system realized by a full duplex holographic Multiple-Input Multiple-Output (MIMO) node equipped with Dynamic Metasurface Antennas (DMAs) at both its communication ends. Focusing on the near-field regime, we extend Fresnel's approximation to metasurfaces and devise a subspace tracking scheme with DMA-based hybrid Analog and Digital (A/D) reception as well as hybrid A/D transmission with a DMA for sum-rate maximization. The presented simulation results corroborate the efficiency of the proposed framework for various system parameters.

翻译：本文提出了一种由全双工全息多输入多输出（MIMO）节点实现的同步目标跟踪与多用户通信系统，该节点在其通信两端均配备动态超表面天线（DMA）。聚焦于近场区域，我们将菲涅尔近似扩展至超表面，并设计了一种基于DMA的混合模数（A/D）接收子空间跟踪方案，以及用于和速率最大化的混合模数发射方案。仿真结果验证了所提框架在不同系统参数下的有效性。