11 papers
Holographic Beamforming for Range-Doppler Sidelobe Suppression in OFDM-ISAC
Amirhossein Azarbahram, Onel L. A. López
This paper investigates range--Doppler (RD) sidelobe suppression in an integrated sensing and communications system with a reconfigurable holographic surface (RHS). We jointly desi…
Robust Near-Field Beam Focusing Under Imperfect Localization
Nima Mozaffarikhosravi, Amirhossein Azarbahram, Prathapasinghe Dharmawansa +1
The transition to 6G-and-beyond wireless systems with large-scale antenna arrays and high-frequency deployments significantly extends the near-field region, where channels exhibit…
Beam Selection for Delay-Doppler Visibility in Multi-Target MIMO-OFDM Sensing
Amirhossein Azarbahram, Onel L. A. López
This paper studies leakage-aware beam selection for multi-target multiple-input multiple-output (MIMO)-orthogonal frequency-division multiplexing (OFDM) sensing. We focus on ensuri…
Toward Proactive RF Charging Scheduling: Generative AI for Decision Support
Amirhossein Azarbahram, Osmel M. Rosabal, David Ernesto Ruiz-Guirola +3
Radio frequency wireless power transfer (RF-WPT) is an enabling technology for supporting uninterrupted communications in future Internet of Things systems by reducing the need for…
Sequential Monte Carlo for Resilient Networks: Assessment, Mitigation, and Generative Modeling
Onel L. A. López, Amirhossein Azarbahram
Resilience is becoming crucial for future wireless networks, which must withstand, adapt to, and recover from rare but potentially cascading disruptions. This paper develops a sequ…
Discrete Diffusion for Codebook-Based Beam Candidate Generation
Amirhossein Azarbahram, Onel L. A. López
Millimeter-wave (mmWave) communication enables high data rates through large bandwidths and highly directional beamforming, but its sensitivity to blockage and mobility makes relia…