5 papers
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…
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…
Spatial Correlation and Degrees of Freedom in Arched HMIMO Arrays: A Closed-Form Analysis
Liuxun Xue, Shu Sun, Hangsong Yan
This paper presents a closed-form analysis of spatial correlation and degrees of freedom (DoF) for arched holographic multiple-input multiple-output (HMIMO) arrays, which can be vi…
Millimeter-Wave Energy-Efficient Hybrid Beamforming Architecture and Algorithm
Hongpu Zhang, Yulu Guo, Liuxun Xue +5
This paper studies energy-efficient hybrid beamforming architectures and its algorithm design in millimeter-wave communication systems, aiming to address the challenges faced by ex…
How to Differentiate between Near Field and Far Field: Revisiting the Rayleigh Distance
Shu Sun, Renwang Li, Chong Han +3
Future wireless systems are likely to adopt extremely large aperture arrays to achieve higher throughput, wider coverage, and higher spatial resolution. Conventional wireless syste…