Channel Estimation in RIS-Enabled mmWave Wireless Systems: A Variational Inference Approach
Channel Estimation in RIS-Enabled mmWave Wireless Systems: A Variational Inference Approach
Channel estimation in reconfigurable intelligent surfaces (RIS)-aided systems is crucial for optimal configuration of the RIS and various downstream tasks such as user localization. In RIS-aided systems, channel estimation involves estimating two channels for the user-RIS (UE-RIS) and RIS-base station (RIS-BS) links. In the literature, two approaches are proposed: (i) …