577 citations · 1.3k across the 30 of their papers we have counts for
30 papers
Channel Estimation for Movable Antenna Communication Systems: A Framework Based on Compressed Sensing
Zhenyu Xiao, Songqi Cao, Lipeng Zhu +3
Movable antenna (MA) is a new technology with great potential to improve communication performance by enabling local movement of antennas for pursuing better channel conditions. In…
Multiuser Communications with Movable-Antenna Base Station: Joint Antenna Positioning, Receive Combining, and Power Control
Zhenyu Xiao, Xiangyu Pi, Lipeng Zhu +2
Movable antenna (MA) is an emerging technology which enables a local movement of the antenna in the transmitter/receiver region for improving the channel condition and communicatio…
Multiuser Communications with Movable-Antenna Base Station Via Antenna Position Optimization
Xiangyu Pi, Lipeng Zhu, Zhenyu Xiao +1
This paper studies the deployment of multiple movable antennas (MAs) at the base station (BS) for enhancing the multiuser communication performance. First, we model the multiuser c…
Singular-Value Statistics of Non-Hermitian Random Matrices and Open Quantum Systems
Kohei Kawabata, Zhenyu Xiao, Tomi Ohtsuki +1
The spectral statistics of non-Hermitian random matrices are of importance as a diagnostic tool for chaotic behavior in open quantum systems. Here, we investigate the statistical p…
3-D Positioning and Resource Allocation for Multi-UAV Base Stations Under Blockage-Aware Channel Model
Pengfei Yi, Lipeng Zhu, Zhenyu Xiao +3
In this paper, we propose to deploy multiple unmanned aerial vehicle (UAV) mounted base stations to serve ground users in outdoor environments with obstacles. In particular, the ge…
Deep Learning-Based Rate-Splitting Multiple Access for Reconfigurable Intelligent Surface-Aided Tera-Hertz Massive MIMO
Minghui Wu, Zhen Gao, Yang Huang +3
Reconfigurable intelligent surface (RIS) can significantly enhance the service coverage of Tera-Hertz massive multiple-input multiple-output (MIMO) communication systems. However,…
Terahertz-Band Near-Space Communications: From a Physical-Layer Perspective
Tianqi Mao, Leyi Zhang, Zhenyu Xiao +2
Facilitated by rapid technological development of the near-space platform stations (NSPS), near-space communication (NS-COM) is envisioned to play a pivotal role in the space-air-g…
LEO Satellite Access Network (LEO-SAN) Towards 6G: Challenges and Approaches
Zhenyu Xiao, Junyi Yang, Tianqi Mao +4
With the rapid development of satellite communication technologies, the space-based access network has been envisioned as a promising complementary part of the future 6G network. A…
Near Space Communications (NS-COM): A New Regime in Space-Air-Ground Integrated Network (SAGIN)
Zhenyu Xiao, Tianqi Mao, Zhu Han +1
Precipitated by the technological innovations of the near-space platform stations (NSPS), the near space communication (NS-COM) network has emerged as an indispensable part of the…
Level statistics of real eigenvalues in non-Hermitian systems
Zhenyu Xiao, Kohei Kawabata, Xunlong Luo +2
Symmetries associated with complex conjugation and Hermitian conjugation, such as time-reversal symmetry and pseudo-Hermiticity, have great impact on eigenvalue spectra of non-Herm…
Active Terminal Identification, Channel Estimation, and Signal Detection for Grant-Free NOMA-OTFS in LEO Satellite Internet-of-Things
Xingyu Zhou, Keke Ying, Zhen Gao +5
This paper investigates the massive connectivity of low Earth orbit (LEO) satellite-based Internet-of-Things (IoT) for seamless global coverage. We propose to integrate the grant-f…
Antenna Array Enabled Space/Air/Ground Communications and Networking for 6G
Zhenyu Xiao, Zhu Han, Arumugam Nallanathan +5
Antenna arrays have a long history of more than 100 years and have evolved closely with the development of electronic and information technologies, playing an indispensable role in…
Joint 3-D Positioning and Power Allocation for UAV Relay Aided by Geographic Information
Pengfei Yi, Liang Zhu, Lipeng Zhu +3
In this paper, we study to employ geographic information to address the blockage problem of air-to-ground links between UAV and terrestrial nodes. In particular, a UAV relay is dep…
A Survey on Millimeter-Wave Beamforming Enabled UAV Communications and Networking
Zhenyu Xiao, Lipeng Zhu, Yanming Liu +4
Unmanned aerial vehicles (UAVs) have found widespread commercial, civilian, and military applications. Wireless communication has always been one of the core technologies for UAV.…
Millimeter-Wave Full-Duplex UAV Relay: Joint Positioning, Beamforming, and Power Control
Lipeng Zhu, Jun Zhang, Zhenyu Xiao +3
In this paper, a full-duplex unmanned aerial vehicle (FD-UAV) relay is employed to increase the communication capacity of millimeter-wave (mmWave) networks. Large antenna arrays ar…
Millimeter-Wave NOMA with User Grouping, Power Allocation and Hybrid Beamforming
Lipeng Zhu, Jun Zhang, Zhenyu Xiao +3
This paper investigates the application of non-orthogonal multiple access in millimeter-Wave communications (mmWave-NOMA). Particularly, we consider downlink transmission with a hy…
User Fairness Non-orthogonal Multiple Access (NOMA) for 5G Millimeter-Wave Communications with Analog Beamforming
Zhenyu Xiao, Lipeng Zhu, Zhen Gao +2
The integration of non-orthogonal multiple access in millimeter-Wave communications (mmWave-NOMA) can significantly improve the spectrum efficiency and increase the number of users…
Joint Tx-Rx Beamforming and Power Allocation for 5G Millimeter-Wave Non-Orthogonal Multiple Access (MmWave-NOMA) Networks
Lipeng Zhu, Jun Zhang, Zhenyu Xiao +3
In this paper, we investigate the combination of non-orthogonal multiple access and millimeter-Wave communications (mmWave-NOMA). A downlink cellular system is considered, where an…
Joint Power Control and Beamforming for Uplink Non-Orthogonal Multiple Access in 5G Millimeter-Wave Communications
Lipeng Zhu, Jun Zhang, Zhenyu Xiao +3
In this paper, we investigate the combination of two key enabling technologies for the fifth generation (5G) wireless mobile communication, namely millimeter-wave (mmWave) communic…
Joint Power Allocation and Beamforming for Non-Orthogonal Multiple Access (NOMA) in 5G Millimeter-Wave Communications
Zhenyu Xiao, Lipeng Zhu, Jinho Choi +2
In this paper we explore non-orthogonal multiple access (NOMA) in millimeter-wave (mmWave) communications (mmWave-NOMA). In particular, we consider a typical problem, i.e., maximiz…
Full-Duplex Millimeter-Wave Communication
Zhenyu Xiao, Pengfei Xia, Xiang-Gen Xia
The potential of doubling the spectrum efficiency of full-duplex (FD) transmission motivates us to investigate FD millimeter-wave (FD-mmWave) communication. To realize FD transmiss…
Millimeter-Wave Communication with Non-Orthogonal Multiple Access for 5G
Zhenyu Xiao, Linglong Dai, Zhiguo Ding +2
To further improve the system capacity for 5G, we explore the integration of non-orthogonal multiple access (NOMA) in mmWave communications (mmWave-NOMA) for future 5G systems. Com…
Achievable Sum Rates of Half- and Full-Duplex Bidirectional OFDM Communication Links
Zhenyu Xiao, Yao Li, Lin Bai +1
While full-duplex (FD) transmission has the potential to double the system capacity, its substantial benefit can be offset by the self-interference (SI) and non-ideality of practic…
Codebook Design for Millimeter-Wave Channel Estimation with Hybrid Precoding Structure
Zhenyu Xiao, Pengfei Xia, Xiang-Gen Xia
In this paper, we study hierarchical codebook design for channel estimation in millimeter-wave (mmWave) communications with a hybrid precoding structure. Due to the limited saturat…