5 papers
Distributed Near-Field Channel Estimation for U6G XL-MIMO Systems under Beam Squint
Zhizheng Lu, Yu Han, Xiao Li +2
Since the beam squint and near-field effects both inherently exist in upper-6 GHz (U6G) extremely large-scale multiple-input multiple-output (XL-MIMO) systems, wideband near-field…
Wideband Precoding for U6G XL-MIMO Systems: Beam Squint Boundaries and Channel Slicing
Zhizheng Lu, Yu Han, Xiaojie Li +2
The unconventionally large aperture of extremely large-scale multiple-input multiple-output (XL-MIMO) arrays, in conjunction with the wider bandwidths in the upper-6 GHz (U6G) freq…
Analytical Framework of Airy Beams in Near-Field XL-MIMO: From Ideal Optics to Wireless Reality
Zhizheng Lu, Yu Han, Ruirui Sun +2
The synthesis of Airy-profiled wavefronts has emerged as a pivotal paradigm for advanced electromagnetic engineering, attributed to their intrinsic non-diffractive propagation, tra…
U6G XL-MIMO Radiomap Prediction: Multi-Config Dataset and Beam Map Approach
Xiaojie Li, Yu Han, Zhizheng Lu +2
The upper 6 GHz (U6G) band with XL-MIMO is a key enabler for sixth-generation wireless systems, yet intelligent radiomap prediction for such systems remains challenging. Existing d…
Keypoint Detection Empowered Near-Field User Localization and Channel Reconstruction
Mengyuan Li, Yu Han, Zhizheng Lu +3
In the near-field region of an extremely large-scale multiple-input multiple-output (XL MIMO) system, channel reconstruction is typically addressed through sparse parameter estimat…