78 citations · 187 across the 38 of their papers we have counts for
10 papers · 1 filter
Low-Complexity Near-Field Channel Estimation for Hybrid RIS Assisted Systems
Rafaela Schroeder, Jiguang He, Hamza Djelouat +1
We investigate the channel estimation (CE) problem for hybrid RIS assisted systems and focus on the near-field (NF) regime. Different from their far-field counterparts, NF channels…
Hashing Beam Training for Near-Field Communications
Yuan Xu, Li Wei, Chongwen Huang +6
In this paper, we investigate the millimeter-wave (mmWave) near-field beam training problem to find the correct beam direction. In order to address the high complexity and low iden…
Stochastic Geometry Analysis for Distributed RISs-Assisted mmWave Communications
Yuan Xu, Li Wei, Chongwen Huang +6
Millimeter wave (mmWave) has attracted considerable attention due to its wide bandwidth and high frequency. However, it is highly susceptible to blockages, resulting in significant…
Device-Free 3D Drone Localization in RIS-Assisted mmWave MIMO Networks
Jiguang He, Charles Vanwynsberghe, Hui Chen +2
In this paper, we investigate the potential of reconfigurable intelligent surfaces (RISs) in facilitating passive/device-free three-dimensional (3D) drone localization within exist…
Coverage and Rate Analysis for Integrated Sensing and Communication Networks
Xu Gan, Chongwen Huang, Zhaohui Yang +6
Integrated sensing and communication (ISAC) is increasingly recognized as a pivotal technology for next-generation cellular networks, offering mutual benefits in both sensing and c…
Electromagnetic Hybrid Beamforming for Holographic Communications
Ran Ji, Chongwen Huang, Xiaoming Chen +6
It is well known that there is inherent radiation pattern distortion for the commercial base station antenna array, which usually needs three antenna sectors to cover the whole spa…
Localization in Reconfigurable Intelligent Surface Aided mmWave Systems: A Multiple Measurement Vector Based Channel Estimation Method
Kunlun Li, Jiguang He, Mohammed El-Hajjar +1
The sparsity of millimeter wave (mmWave) channels in the angular and temporal domains is beneficial to channel estimation, while the associated channel parameters can be utilized f…
ELAA Near-Field Localization and Sensing with Partial Blockage Detection
Hui Chen, Pinjun Zheng, Yu Ge +4
High-frequency communication systems bring extremely large aperture arrays (ELAA) and large bandwidths, integrating localization and (bi-static) sensing functions without extra inf…
Coverage and Rate Analysis for Distributed RISs-Assisted mmWave Communications
Yuan Xu, Chongwen Huang, Wei Li +7
The millimeter wave (mmWave) has received considerable interest due to its expansive bandwidth and high frequency. However, a noteworthy challenge arises from its vulnerability to…
RIS-Augmented Millimeter-Wave MIMO Systems for Passive Drone Detection
Jiguang He, Aymen Fakhreddine, George C. Alexandropoulos
In the past decade, the number of amateur drones is increasing, and this trend is expected to continue in the future. The security issues brought by abuse and misconduct of drones…