4 papers
A Unified Codebook Design for Curvature-Reconfigurable Apertures: Seamless Near to Far Field Coverage
Zhoujie You, Shu Sun, Ruifeng Gao +2
Beam training for extremely large-scale arrays with curvature-reconfigurable apertures (CuRAs) faces the critical challenge of severe, geometry-dependent angle-range coupling. Whil…
Spatial Correlation, Non-Stationarity, and Degrees of Freedom of Holographic Curvature-Reconfigurable Apertures
Liuxun Xue, Shu Sun, Ruifeng Gao +1
Low-altitude wireless platforms increasingly require lightweight, conformal, and densely sampled antenna array apertures with high array gain and spatial selectivity. However, when…
Diffuse scattering measurements and mechanism analysis at 8, 12, and 28 GHz for typical building surfaces
Tongjia Zhang, Shu Sun, Meixia Tao +2
This study investigates the fundamental diffuse scattering mechanisms from three typical building wall surfaces, conducting measurements and model parameterization at 28 GHz and tw…
Investigation of Superdirectivity in Planar Holographic Arrays
Hang Lin, Liuxun Xue, Shu Sun +3
This paper studies the superdirectivity characteristics of uniform rectangular arrays (URAs) for holographic multiple-input multiple-output systems. By establishing a mathematical…