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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 Abdallah Senior Member, Ieee et al. · 0 citations

#machine learning Preprint Oct 2026

Multi-Agent Spectrum Sharing

This project explores how multiple cognitive radars can learn to share limited wireless spectrum with other radio users without interfering with one another. Using machine learning (ML), each device independently decides where and how widely to transmit within a fixed 100 MHz band. The system analyzes real or simulated...

Job Elliott, Graduate Student Member, Ieee et al. · 0 citations