blockage detection 1channel modeling 1Cramér-Rao bound 1diffraction-based sensing 1maximum likelihood estimation 1wireless propagation 1
From the 1 of 3 linked papers with an AI index.
3 papers
eess.SP2026
Parametric Diffraction-Based Object Sensing: Modeling, Estimation, and Fundamental Limits
Jiaqi Xu, Bjorn Ottersten, A. Lee Swindlehurst
The paper develops a physics‑based diffraction channel model for sensing objects at wireless frequencies, and proposes maximum‑likelihood methods to estimate object shape, range, a…
eess.SP2024
Non-Reciprocal Reconfigurable Intelligent Surfaces
Jiaqi Xu, Haoyu Wang, Rang Liu +2
In contrast to conventional RIS, the scattering matrix of a non-reciprocal RIS (NR-RIS) is non-symmetric, leading to differences in the uplink and the downlink components of NR-RIS…
eess.SP2024
Meta-Learning-Driven Adaptive Codebook Design for Near-Field Communications
Mianyi Zhang, Yunlong Cai, Jiaqi Xu +1
Extremely large-scale arrays (XL-arrays) and ultra-high frequencies are two key technologies for sixth-generation (6G) networks, offering higher system capacity and expanded bandwi…