5 papers · 1 filter
Physics-Guided Neural Airy Beamforming for Near-Field Blockage Mitigation
Yi Wang, Linglong Dai
High-frequency communication systems heavily rely on line-of-sight(LoS) paths, so blockage of the LoS path can cause severe performance loss. Near-field Airy beams with curved traj…
Blockage-Robust Beamforming for Near-Field Communications: From Single-Airy to Multi-Airy
Yi Wang, Linglong Dai
High-frequency communications strongly depend on the line-of-sight (LoS) path, and obstacle blockage can severely degrade the received signal power and achievable rate. Near-field…
Near-field Beam Training under Multi-path Channels: A Hybrid Learning-and-Optimization Approach
Jiapeng Li, Changsheng You, Guoliang Cheng +3
For extremely large-scale arrays (XL-arrays), the discrete Fourier transform (DFT) codebook, conventionally used in the far-field, has recently been employed for near-field beam tr…
Wavenumber-domain signal processing for holographic MIMO: Foundations, methods, and future directions
Zijian Zhang, Linglong Dai
Holographic multiple-input multiple-output (H-MIMO) systems represent a paradigm shift in wireless communications by enabling quasi-continuous apertures. Unlike conventional MIMO s…
Near-Field Challenges in Ultra-Wideband ISAC: Beamforming Strategies and System Insights
Yonghwi Kim, Sang-Hyun Park, Siyun Yang +3
The shift toward sixth-generation (6G) wireless networks places integrated sensing and communications (ISAC) at the core of future applications such as autonomous driving, extended…