2 papers
eess.SP2021
Double-RIS Versus Single-RIS Aided Systems: Tensor-Based MIMO Channel Estimation and Design Perspectives
Khaled Ardah, Sepideh Gherekhloo, André L. F. de Almeida +1
Reconfigurable intelligent surfaces (RISs) have been proposed recently as new technology to tune the wireless propagation channels in real-time. However, most of the current works…
cs.IT2018
Low-complexity separable beamformers for massive antenna array systems
Lucas N. Ribeiro, André L. F. de Almeida, Josef A. Nossek +1
Future cellular systems will likely employ massive bi-dimensional arrays to improve performance by large array gain and more accurate spatial filtering, motivating the design of lo…