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Author

A. Celik

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Preprint Oct 2026

RF Chain Count to Mitigate Beam Split in Wideband Hybrid Arrays: From Far-Field to Near-Field

Deploying large antenna arrays transitions wireless communication into the radiative near-field (NF), where spherical wavefronts enable beamfocusing in the joint angle-distance domain. However, wideband beamforming with large antenna arrays suffers from beam split across both spatial dimensions. Although fully digital...

Ahmed Hussain, Asmaa R. Abdallah, A. Celik et al. · 0 citations
2026

Aerial RIS-Aided Uplink NOMA: A DRL-Aided Resource Allocation Framework

Integrating uncrewed aerial vehicle (UAV)-mounted aerial reconfigurable intelligent surfaces (RISs) holds significant promise for enhancing the performance of ground-based networks. This paper proposes a novel three-dimensional (3D) deployment and partitioning framework for aerial RIS-assisted uplink grant-free non-ort...

Tomiris Altay, Mohd Hamza Naim Shaikh, A. Celik et al. · 0 citations

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