282 citations · 409 across the 21 of their papers we have counts for
22 papers
Deep Learning-Based Tri-Hybrid Multi-User MIMO Precoding: The Blessing of EM-Reconfigurable Antennas
Kaijun Feng, Jiaxin He, Hongrui Yu +4
Electromagnetic (EM)-reconfigurable antennas provide multiple candidate radiation patterns per element, thereby introducing an additional EM-domain degree of freedom. Integrating r…
LUNA: Luneburg-Lens-Aided Reconfigurable Array for 6G-and-Advanced Wireless Networks
Ziwei Wan, Zhen Gao, Shuping Dang +3
This article introduces the LUneburg-lens-aided recoNfigurable Array (LUNA), an antenna architecture that unifies multiple-input multiple-output (MIMO) and network-controlled repea…
UW-OCDM for Low-Altitude UAV Communication and Cooperative Sensing
Yi Tao, Zhen Gao, Ziwei Wan +4
Integrated sensing and communications (ISAC) is a key enabler for uncrewed aerial vehicles (UAVs) in the low-altitude economy. This paper proposes an ISAC waveform that embeds a un…
Multi-Domain Iterative Detection for Massive Connectivity in LEO Satellite Networks
Xinhua Liu, Yueqing Wang, Keke Ying +7
Grant-Free (GF) random access is promising for low Earth orbit satellite Internet due to its reduced access latency. However, existing schemes suffer from poor performance in massi…
ReFLEX: Length-Generalizable CSI Denoising for MIMO-OFDM via Relative-Frequency Bias
Zhibin Zhang, Robert Potekhin, Ziwei Wan +2
This letter studies CSI denoising for MIMO--OFDM with variable NR resource block (RB) allocations. ReFLEX is a length-generalizable Transformer whose frequency attention uses a rel…
DJSCC-Enabled Multi-User Semantic CSI Feedback for Hybrid Beamforming in Dual-Polarized cmWave Massive MIMO
Ziqi Han, Ziwei Wan, Hengwei Zhang +5
Driven by the ultra-high throughput requirements of 6G, wireless communications are migrating to centimeter wave (cmWave) bands to overcome the limitations of current spectral reso…
Transformer-Based Hybrid Beamforming with Reconfigurable Pixel Antenna for HAPS Communications
Ruiqi Wang, Ziwei Wan, Keke Ying +1
This paper proposes a Transformer-based hybrid beamforming framework for reconfigurable pixel antenna (RPA)-equipped massive multiple-input multiple-output (MIMO) in high-altitude…
Tri-Domain Multiuser MIMO Precoding Optimization and Channel Estimation with Spatial-EM Reconfigurable Antenna
Yining Li, Ziwei Wan, Zhen Gao +3
In this paper, we propose a tri-domain reconfigurable multiuser multiple-input multiple-output (MIMO) communication system that integrates the electromagnetic (EM) reconfigurable a…
Deep learning based Channel Estimation and Beamforming in Movable Antenna Systems
Kaijun Feng, Ziwei Wan, Anwen Liao +5
Movable antenna (MA) has emerged as a promising technology for future wireless systems. Compared with traditional fixed-position antennas, MA improves system performance by antenna…
Transformer-based Hybrid Beamforming with Dynamic Subarray for Near-Space Airship-Borne Communications
Ruiqi Wang, Zhen Gao, Keke Ying +3
This paper proposes a hybrid beamforming framework for massive multiple-input multiple-output (MIMO) in near-space airship-borne communications. To achieve high energy efficiency (…
Movable Antenna for Integrating Near-field Channel Estimation and Localization
Chongjia Sun, Ziwei Wan, Lipeng Zhu +3
Movable antenna (MA) introduces a new degree of freedom for future wireless communication systems by enabling the adaptive adjustment of antenna positions. Its large-range movement…
Ultra-Massive MIMO with Orthogonal Chirp Division Multiplexing for Near-Field Sensing and Communication Integration
Ziwei Wan, Zhen Gao, Fabien Heliot +6
This paper integrates the emerging ultra-massive multiple-input multiple-output (UM-MIMO) technique with orthogonal chirp division multiplexing (OCDM) waveform to tackle the challe…
Pseudo-Random TDM-MIMO FMCW Based Millimeter-Wave Sensing and Communication Integration for UAV Swarm
Yi Tao, Zhen Gao, Zhuoran Li +7
The integrated sensing and communications (ISAC) can achieve the sharing of hardware and spectrum resources, enabling efficient data transmission and environmental sensing. This fu…
AI Signal Processing Paradigm for Movable Antenna: From Spatial Position Optimization to Electromagnetic Reconfigurability
Yining Li, Ziwei Wan, Chongjia Sun +10
As 6G wireless communication systems evolve toward intelligence, high reconfigurability, and space-air-ground integration \cite{liu2025toward, liu2024near}, the limitations of trad…
MmWave-LoRadar Empowered Vehicular Integrated Sensing and Communication Systems: LoRa Meets FMCW
Yi Tao, Ziwei Wan, Zhuoran Li +3
The integrated sensing and communication (ISAC) technique is regarded as a key component in future vehicular applications. In this paper, we propose an ISAC solution that integrate…
Pre-Equalization Aided Grant-Free Massive Access in Massive MIMO System
Yueqing Wang, Yikun Mei, Zhen Gao +4
The spatial diversity and multiplexing advantages of massive multi-input-multi-output (mMIMO) can significantly improve the capacity of massive non-orthogonal multiple access (NOMA…
AFDM-SCMA: A Promising Waveform for Massive Connectivity over High Mobility Channels
Qu Luo, Pei Xiao, Zilong Liu +4
This paper studies the affine frequency division multiplexing (AFDM)-empowered sparse code multiple access (SCMA) system, referred to as AFDM-SCMA, for supporting massive connectiv…
The Road to Industry 4.0 and Beyond: A Communications-, Information-, and Operation Technology Collaboration Perspective
Ziwei Wan, Zhen Gao, Marco Di Renzo +1
The fourth industrial revolution, i.e., Industry 4.0, is evolving all around the globe. In this article, we introduce the landscape of Industry 4.0 and beyond empowered by the seam…
Integrated Sensing and Communication with mmWave Massive MIMO: A Compressed Sampling Perspective
Zhen Gao, Ziwei Wan, Dezhi Zheng +4
Integrated sensing and communication (ISAC) has opened up numerous game-changing opportunities for realizing future wireless systems. In this paper, we propose an ISAC processing f…
Terahertz Massive MIMO with Holographic Reconfigurable Intelligent Surfaces
Ziwei Wan, Zhen Gao, Feifei Gao +2
We propose a holographic version of a reconfigurable intelligent surface (RIS) and investigate its application to terahertz (THz) massive multiple-input multiple-output systems. Ca…
Broadband Channel Estimation for Intelligent Reflecting Surface Aided mmWave Massive MIMO Systems
Ziwei Wan, Zhen Gao, Mohamed-Slim Alouini
This paper investigates the broadband channel estimation (CE) for intelligent reflecting surface (IRS)-aided millimeter-wave (mmWave) massive MIMO systems. The CE for such systems…
Compressive Sensing Based Channel Estimation for Millimeter-Wave Full-Dimensional MIMO with Lens-Array
Ziwei Wan, Zhen Gao, Byonghyo Shim +3
Channel estimation (CE) for millimeter-wave (mmWave) lens-array suffers from prohibitive training overhead, whereas the state-of-the-art solutions require an extra complicated radi…