2 citations · 2 across the 5 of their papers we have counts for
9 papers · 1 filter
Deconstructing the Composite Channel for Beyond Diagonal RIS: Channel Estimation and Beamforming Design
Fazal-E Asim, André L. F. de Almeida, Bruno Sokal +2
As beyond-diagonal reconfigurable intelligent surfaces (BD-RISs) gain increasing attention in high-frequency wireless communications, accurate and scalable channel-estimation metho…
PARAFAC-Based Time-Varying Channel Estimation for IRS-Aided Communications
Kenneth B. A. BenÃcio, André L. F. de Almeida, Bruno Sokal +3
This paper proposes a tensor-based parametric channel estimation technique for IRS-assisted communication systems with time-varying channel parameters. We exploit the multidimensio…
Low-Complexity Tensor-Based Monostatic Sensing for IRS-Assisted Communication Systems
Kenneth B. A. BenÃcio, Bruno Sokal, André L. F. de Almeida +3
This paper proposes a tensor-based parameter estimation algorithm for sensing in an intelligent reflecting surface-assisted system. We present a higher-order singular value decompo…
Decoupled Azimuth Elevation AoA Estimation Exploiting Kronecker Separable Steering Matrices
Faizan A. Khattak, Ian K. Proudler, Stephan Weiss +1
Uniform rectangular arrays (URA), structured non-uniform rectangular arrays (NURA), and parallelogram shaped (UPgA and NUPgA) arrays admit steering vectors that can be expressed as…
Multi-Target Estimation via Tensor Decomposition for Beyond Diagonal RIS-Aided Bistatic Sensing
Kenneth BenÃcio, André L. F. de Almeida, Fazal-E Asim +4
We investigate the performance of beyond-diagonal reconfigurable intelligent surfaces (BD-RIS) for bistatic MIMO multi-target sensing using a two-stage tensor Doppler-delay-angle e…
Channel Estimation for Downlink Communications Based on Dynamic Metasurface Antennas
Amarilton L. Magalhães, Fazal E-Asim, André L. F. de Almeida +1
Dynamic metasurface antennas (DMAs) are emerging as a promising technology to enable energy-efficient, large array-based multi-antenna systems. This paper presents a simple channel…