140 citations · 140 across the 5 of their papers we have counts for
5 papers
SALSA: A Sequential Alternating Least Squares Approximation Method For MIMO Channel Estimation
Sepideh Gherekhloo, Khaled Ardah, Martin Haardt
In this paper, we consider the channel estimation problem in sub-6 GHz uplink wideband MIMO-OFDM communication systems, where a user equipment with a fully-digital beamforming stru…
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…
Tensor-Based Channel Estimation and Reflection Design for RIS-Aided Millimeter-Wave MIMO Communication Systems
Sepideh Gherekhloo, Khaled Ardah, André L. F. de Almeida +1
In this work, we consider both channel estimation and reflection design problems in point-to-point reconfigurable intelligent surface (RIS)-aided millimeter-wave (mmWave) MIMO comm…
Fully Digital and Hybrid Beamforming Design For Millimeter-Wave MIMO-OFDM Two-Way Relaying Systems
Sepideh Gherekhloo, Khaled Ardah, Martin Haardt
In this work, we consider the design of hybrid analog-digital (HAD) multi-carrier MIMO-OFDM two-way relaying systems, where the relay station is equipped with a HAD amplify-and-for…
TRICE: A Channel Estimation Framework for RIS-Aided Millimeter-Wave MIMO Systems
Khaled Ardah, Sepideh Gherekhloo, André L. F. de Almeida +1
We consider the channel estimation problem in point-to-point reconfigurable intelligent surface (RIS)-aided millimeter-wave (mmWave) MIMO systems. By exploiting the low-rank nature…