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Author

Fazal-E. Asim

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3 papers indexed here

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Preprint Sep 2026

PARAFAC-Based Low-Latency Angular Tracking for RIS-Assisted Sensing

This paper proposes adaptive tensor tracking for angular trajectories (ATTRACT), a structure-aware alternating least squares algorithm for low-latency target tracking in reconfigurable intelligent surface (RIS)-assisted sensing. The received echo is represented as a dynamic third-order PARAFAC tensor that separates ang...

Kenneth Ben'icio, André L. F. de Almeida, Bruno Sokal et al. · 0 citations
Preprint Oct 2026

Low-Complexity Tensor-Based Channel Parameter Estimation for mmWave MIMO-Assisted Systems

This paper presents a low-complexity tensor-based channel estimation framework for downlink mmWave massive MIMO systems using passive Butler-matrix beamforming. By modeling received signals as a third-order PARAFAC tensor, we exploit known pilot structures via bilinear alternating least-squares (BALS) optimization to r...

F. I. T. Pires, J. Ferreira, Fazal-E. Asim · 0 citations
Open access Sep 2026

Structured Channel Parameter Estimation for RIS-Assisted MIMO Systems via Kronecker and Tensor Factorizations

This paper proposes structured channel-parameter estimators for reconfigurable intelligent surface (RIS)-assisted multiple-input multiple-output (MIMO) systems employing uniform rectangular arrays under line-of-sight propagation. By exploiting the Kronecker and multilinear structures of the cascaded channel, we introdu...

M. G. Sousa, J. Ferreira, Fazal-E. Asim · 0 citations

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