Author

Tian-Yu Fang

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Preprint Sep 2026

Tri-Hybrid Beamforming Design for Large-Scale MIMO ISAC Systems

Tri-hybrid multiple-input multiple-output (MIMO) architectures have been proposed as a promising solution for enabling energy-efficient communications systems in large-scale antenna arrays by replacing conventional antenna arrays in hybrid beamforming (HBF) systems with low-cost dynamic metasurface antennas (DMAs). In...

Tian-Yu Fang, Mengyuan Ma, Markku J. Juntti et al. · 0 citations

Preprint Sep 2026

Massive MIMO ISAC Under Target-Angle Uncertainty: CRLB Outage Analysis and Robust Resource Allocation

This paper investigates monostatic massive multiple-input-multiple-output ISAC systems under imperfect target-angle estimates and proposes a robust power allocation framework that jointly optimizes pilot training and communications/sensing transmission powers to maximize the communications sum rate while satisfying CRL...

Smriti Uniyal, Tian-Yu Fang, Van-Dinh Nguyen et al. · 0 citations

Preprint Aug 2026

Performance Analysis and Joint Beamforming for Hybrid RIS-Aided Massive MIMO ISAC

In integrated sensing and communication (ISAC) systems, stringent sensing performance constraints can severely limit the power available for communication. Hybrid reconfigurable intelligent surfaces (HRISs) with capabilities of both passive reflection and active signal amplification can significantly improve communicat...

Smriti Uniyal, Tian-Yu Fang, M. di Renzo et al. · 1 citation