Signal processing techniques for wireless communications and sensing fundamentally differ between near-field and far-field propagation regimes. Accurately identifying the applicable propagation region is therefore essential for enabling efficient beamforming and channel estimation in ultra-massive MIMO (UM-MIMO) system...
Simon Tarboush, Nour Kouzayha, Hadi Sarieddeen et al.· 0 citations
We study random access (RACH) schemes for cell-free (CF) user-centric networks to handle many geographically distributed users with sporadic traffic and intermittent activity. The RACH must allow the system to: 1) detect preambles sent by the (yet unknown) random access users in the RACH slot; 2) localize them for fast...
Simon Tarboush, Eleni Gkiouzepi, Giuseppe Caire· 0 citations
In a wireless network, the initial/random access mechanism (RACH) allows idle/new users to join the network and (possibly) request allocated transmission resources for subsequent traffic. Building on our own previous work, for cell-free user-centric networks, we consider location-dependent random access codebooks such...
Simon Tarboush, Eleni Gkiouzepi, Giuseppe Caire· 1 citation
Accurate channel modeling and estimation of active reconfigurable intelligent surface (RIS)-assisted links with densely integrated elements are essential to fully unleashing this technology's potential. This work adopts a physically consistent model incorporating mutual coupling (MC) effects, modeled via scattering par...
Simon Tarboush, Pin-Jun Zheng, Hadi Sarieddeen et al.· 0 citations
Reconfigurable antennas are increasingly integrated into multi-antenna communication systems to exploit large apertures while reducing the hardware complexity, energy consumption, and implementation costs of classical massive arrays. Their reconfigurable electromagnetic (EM) properties, including dynamically varying ra...
Ahmad Dkhan, Simon Tarboush, Hadi Sarieddeen et al.· 1 citation
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