5 papers
Joint Channel and Symbol Estimation for RIS-Assisted Fluid Antenna Systems
Josué V. de Araújo, Daniel C. Alcantara, Gilderlan T. de Araújo +1
This paper addresses joint channel and symbol estimation in reconfigurable intelligent surface (RIS)-aided multiuser uplink systems with fluid antennas (FAs) at the base station. W…
Channel Estimation for Movable Intelligent Surface
Daniel C. Alcantara, Josué V. de Araújo, Gilderlan T. de Araújo +1
This paper proposes a tensor-based channel estimation framework for an uplink MIMO system assisted by a movable intelligent surface. The considered architecture combines a fixed tr…
Semi-Blind Receivers for RIS-Aided Fluid Antenna Systems
Josué V. de Araújo, Gilderlan T. de Araújo, André L. F. de Almeida
Reconfigurable intelligent surfaces (RISs) and fluid antennas (FAs) are key technologies for enhancing spatial degrees of freedom in future wireless networks. However, channel acqu…
Performance Evaluation of Beyond Diagonal RIS under Hardware Impairments
Jose Carlos da Silva Filho, Josué V. de Araújo, Bruno Sokal +1
Beyond diagonal reconfigurable intelligent surface (BD-RIS) improves the traditional reconfigurable intelligent surface (RIS) architecture functionality by interconnecting elements…
Joint Channel and Symbol Estimation for Communication Systems with Movable Antennas
Josué V. de Araújo, Jose Carlos da Silva Filho, Gilderlan T. de Araújo +2
Communication systems aided by movable antennas have been the subject of recent research due to their potentially increased spatial degrees of freedom offered by optimizing the ant…