97 citations · 175 across the 25 of their papers we have counts for
25 papers
Unexpected Far-Near-Far Transition in Mobile Near Field Terahertz Communications
Peng Zhang, Hanmei Yuan, Zhe Wang +2
At THz frequencies, the radiative near-field distance can be sufficiently large to matter in real deployments. Existing near-field formulas are often understood in a simple way: as…
Statistics Approximation-Enabled Distributed Beamforming for Cell-Free Massive MIMO
Zhe Wang, Emil Björnson, Jiayi Zhang +3
We study a distributed beamforming approach for cell-free massive multiple-input multiple-output networks, referred to as Global Statistics & Local Instantaneous information-based…
Low-Complexity Distributed Combining Design for Near-Field Cell-Free XL-MIMO Systems
Zhe Wang, Jiayi Zhang, Bokai Xu +4
In this paper, we investigate the low-complexity distributed combining scheme design for near-field cell-free extremely large-scale multiple-input-multiple-output (CF XL-MIMO) syst…
Flexible MIMO for Future Wireless Communications: Which Flexibilities are Possible?
Zhe Wang, Jiayi Zhang, Bokai Xu +3
In conventional multiple-input multiple-output (MIMO), static array configurations struggle in dynamic environments, and further antenna scaling is bounded by cost, energy, and foo…
Optimal Bilinear Equalizer Beamforming Design for Cell-Free Massive MIMO Networks with Arbitrary Channel Estimators
Zhe Wang, Jiayi Zhang, Hao Lei +2
This paper studies the distributed optimal bilinear equalizer (OBE) beamforming design for both the uplink and downlink cell-free massive multiple-input multiple-output networks. W…
ROMA: ROtary and Movable Antenna
Jiayi Zhang, Wenhui Yi, Bokai Xu +3
The rotary and movable antenna (ROMA) architecture represents a next-generation multi-antenna technology that enables flexible adjustment of antenna position and array rotation ang…
Performance Analysis of XL-MIMO with Rotary and Movable Antennas for High-speed Railway
Wenhui Yi, Jiayi Zhang, Zhe Wang +2
The rotary and movable antennas (ROMA) technology is efficient in enhancing wireless network capacity by adjusting both the antenna spacing and three-dimensional (3D) rotation of a…
Near-Field User Localization and Channel Estimation for XL-MIMO Systems: Fundamentals, Recent Advances, and Outlooks
Hao Lei, Jiayi Zhang, Zhe Wang +3
Extremely large-scale multiple-input multipleoutput (XL-MIMO) is believed to be a cornerstone of sixth-generation (6G) wireless networks. XL-MIMO uses more antennas to both achieve…
Optimal Bilinear Equalizer for Cell-Free Massive MIMO Systems over Correlated Rician Channels
Zhe Wang, Jiayi Zhang, Emil Björnson +2
In this paper, we explore the low-complexity optimal bilinear equalizer (OBE) combining scheme design for cell-free massive multiple-input multiple-output networks with spatially c…
Hybrid-Field Channel Estimation for XL-MIMO Systems with Stochastic Gradient Pursuit Algorithm
Hao Lei, Jiayi Zhang, Zhe Wang +2
Extremely large-scale multiple-input multiple-output (XL-MIMO) is crucial for satisfying the high data rate requirements of the sixth-generation (6G) wireless networks. In this con…
Large Language Model Empowered Next-Generation MIMO Networks: Fundamentals, Challenges, and Visions
Zhe Wang, Jiayi Zhang, Hongyang Du +4
Next-generation Multiple-Input Multiple-Output (MIMO) is expected to be intelligent and scalable. In this paper, we study Large Language Model (LLM)-enabled next-generation MIMO ne…
Analytical Framework for Effective Degrees of Freedom in Near-Field XL-MIMO
Zhe Wang, Jiayi Zhang, Wenhui Yi +5
Extremely large-scale multiple-input-multiple-output (XL-MIMO) is an emerging transceiver technology for enabling next-generation communication systems, due to its potential for su…
Resource Allocation for Near-Field Communications: Fundamentals, Tools, and Outlooks
Bokai Xu, Jiayi Zhang, Hongyang Du +5
Extremely large-scale multiple-input-multiple output (XL-MIMO) is a promising technology to achieve high spectral efficiency (SE) and energy efficiency (EE) in future wireless syst…
A Tutorial on Near-Field XL-MIMO Communications Towards 6G
Haiquan Lu, Yong Zeng, Changsheng You +9
Extremely large-scale multiple-input multiple-output (XL-MIMO) is a promising technology for the sixth-generation (6G) mobile communication networks. By significantly boosting the…
A Tutorial on Extremely Large-Scale MIMO for 6G: Fundamentals, Signal Processing, and Applications
Zhe Wang, Jiayi Zhang, Hongyang Du +6
Extremely large-scale multiple-input-multiple-output (XL-MIMO), which offers vast spatial degrees of freedom, has emerged as a potentially pivotal enabling technology for the sixth…
Cell-Free XL-MIMO Meets Multi-Agent Reinforcement Learning: Architectures, Challenges, and Future Directions
Zhilong Liu, Jiayi Zhang, Ziheng Liu +5
Cell-free massive multiple-input multiple-output (mMIMO) and extremely large-scale MIMO (XL-MIMO) are regarded as promising innovations for the forthcoming generation of wireless c…
Uplink Performance of Cell-Free Extremely Large-Scale MIMO Systems
Hao Lei, Zhe Wang, Huahua Xiao +2
In this paper, we investigate the uplink performance of cell-free (CF) extremely large-scale multiple-input-multipleoutput (XL-MIMO) systems, which is a promising technique for fut…
Low-Complexity Precoding for Extremely Large-Scale MIMO Over Non-Stationary Channels
Bokai Xu, Zhe Wang, Huahua Xiao +3
Extremely large-scale multiple-input-multiple-output (XL-MIMO) is a promising technology for the future sixth-generation (6G) networks to achieve higher performance. In practice, v…
Uplink Precoding Design for Cell-Free Massive MIMO with Iteratively Weighted MMSE
Zhe Wang, Jiayi Zhang, Hien Quoc Ngo +2
In this paper, we investigate a cell-free massive multiple-input multiple-output system with both access points and user equipments equipped with multiple antennas over the Weichse…
Uplink Performance of RIS-aided Cell-Free Massive MIMO System Over Spatially Correlated Channels
Enyu Shi, Jiayi Zhang, Zhe Wang +2
We consider a practical spatially correlated reconfigurable intelligent surface (RIS)-aided cell-free (CF) massive multiple-input-multiple-output (mMIMO) system with multi-antenna…
Extremely Large-Scale MIMO: Fundamentals, Challenges, Solutions, and Future Directions
Zhe Wang, Jiayi Zhang, Hongyang Du +4
Extremely large-scale multiple-input-multiple-output (XL-MIMO) is a promising technology to empower the next-generation communications. However, XL-MIMO, which is still in its earl…
Cell-Free Massive MIMO with Multi-Antenna Users over Weichselberger Rician Channels
Xin Li, Jiayi Zhang, Zhe Wang +2
We consider a cell-free massive multiple-input multiple-output (MIMO) system with multi-antenna access points and user equipments (UEs) over Weichselberger Rician fading channels w…
Iteratively Weighted MMSE Uplink Precoding for Cell-Free Massive MIMO
Zhe Wang, Jiayi Zhang, Hien Quoc Ngo +2
In this paper, we investigate a cell-free massive MIMO system with both access points and user equipments equipped with multiple antennas over the Weichselberger Rayleigh fading ch…
Uplink Performance of Cell-Free Massive MIMO Over Spatially Correlated Rician Fading Channels
Zhe Wang, Jiayi Zhang, Emil Björnson +1
We consider a practical cell-free massive multiple-input-multiple-output (MIMO) system with multi-antenna access points (APs) and spatially correlated Rician fading channels. The s…