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Acquisition of Channel State Information for mmWave Massive MIMO: Traditional and Machine Learning-based Approaches
The accuracy of channel state information (CSI) acquisition directly affects the performance of millimeter wave (mmWave) communications.
Low-Complexity Multicast Beamforming for Millimeter Wave Communications
To develop a low-complexity multicast beamforming method for millimeter wave communications, we first propose a channel gain estimation method in this article.
Hybrid Beamforming for Millimeter Wave MIMO Integrated Sensing and Communications
In this letter, we consider hybrid beamforming for millimeter wave (mmWave) MIMO integrated sensing and communications (ISAC).
Simultaneous Beam Training and Target Sensing in ISAC Systems with RIS
Based on the SBTTS and PAOE schemes, we further compute the angle-of-arrival and angle-of-departure for the channels between the RIS and the UTs by exploiting the geometry relationship to accomplish the beam alignment of the ISAC system.
Key Issues in Wireless Transmission for NTN-Assisted Internet of Things
The long-distance wireless signal propagation in NTNs leads to severe path loss and large latency, where the accurate acquisition of channel state information (CSI) is another challenge, especially for fast-moving non-terrestrial base stations (NTBSs).
