Author

Alireza Pourafzal

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Preprint Oct 2026

Extended Target Imaging in Non-Ideal Distributed ISAC Systems: A Hierarchical Off-Grid Approach

In future integrated sensing and communication (ISAC) systems, distributed multiple-input multiple-output (MIMO) architectures offer high-resolution imaging capabilities. However, reconstructing real-world extended targets is physically challenging due to continuous anisotropic surface scattering and complex occlusions...

Xin Tong, Yu Ge, A. Pourafzal et al. · 0 citations

Preprint Sep 2026

Task-Aware Beamforming for Semantic Wireless Localization

Many semantic localization tasks require determining a contextually meaningful region or state rather than minimizing the error of a full Cartesian position estimate. In such settings, aggregate localization accuracy need not align with the accuracy of the semantic decision. This paper develops a Cram\'er--Rao bound (C...

M. M. Mojahedian, Alireza Pourafzal, Musa Furkan Keskin et al. · 1 citation

Preprint Aug 2026

Dual-Orthogonality Waveforms for Integrated Communication and Imaging in Dynamic Multipath Channels

Dual-Orthogonality waveforms are multi-antenna signaling schemes that enforce mutual orthogonality across transmit channels and over a prescribed set of delay shifts. By relaxing strict time orthogonality to the physically admissible propagation region, they preserve full-band operation per transmit antenna while embed...

Edoardo Talignani, F. Linsalata, Musa Furkan Keskin et al. · 0 citations