4 papers
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…
PARAFAC-Based Channel Estimation for Beyond Diagonal Reconfigurable Surfaces
Gilderlan Tavares de Araújo, Bruno Sokal, André L. F. de Almeida
Channel estimation is a central bottleneck in BD-RIS-assisted MIMO systems. The richer inter-element coupling that enables large performance gains also makes training and hardware…
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…
Circuit-Based Modeling Approach for Channel Estimation in RIS-Assisted Communications
Daniel C. Alcantara, Daniel V. C. de Oliveira, Gilderlan T. de Araújo +2
Reconfigurable intelligent surface (RIS) has been explored as a supportive technology for wireless communication since around 2019. While the literature highlights the potential of…