We consider the problem of efficient blind parameter estimation in terahertz (THz)-band ultra-massive multiple-input multiple-output (UM-MIMO) systems. UM-MIMO antenna arrays are crucial to overcoming the distance problem in THz communications. Following recent advancements in THz transceiver design, such arrays are intrinsically compact and reconfigurable. We propose dynamically tuning the modulation types, operating frequencies, and indices of transmitting antenna elements for efficient resource utilization in THz UM-MIMO systems. Furthermore, we propose THz-specific signal processing techniques at the receiver side for blindly detecting the transmission parameters. In particular, we propose a low-complexity antenna index, frequency index, modulation mode, and modulation type detectors, and we study the complexity and performance tradeoffs of the proposed schemes.

中文翻译：

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太赫兹频段 MIMO 系统：自适应传输和盲参数估计

我们考虑了太赫兹 (THz) 波段超大规模多输入多输出 (UM-MIMO) 系统中的有效盲参数估计问题。UM-MIMO 天线阵列对于克服太赫兹通信中的距离问题至关重要。随着太赫兹收发器设计的最新进展，此类阵列本质上是紧凑的且可重新配置的。我们建议动态调整发射天线元件的调制类型、工作频率和指数，以在太赫兹 UM-MIMO 系统中有效利用资源。此外，我们在接收端提出了 THz 特定的信号处理技术，用于盲检测传输参数。特别是，我们提出了低复杂度的天线指标、频率指标、调制模式和调制类型检测器，