357 citations · 1.4k across the 52 of their papers we have counts for
43 papers · 1 filter
Channel Estimation By Transmitting Pilots From Reconfigurable Intelligent Surface
Yanze Zhu, Yang Liu, Qingqing Wu +2
Reconfigurable intelligent surface (RIS) is a promising technology for future wireless communication systems. Channel estimation (CE) of RIS device is a critical but also challengi…
A Novel Two-Layer Codebook Based Near-Field Beam Training for Intelligent Reflecting Surface
Tao Wang, Jie Lv, Haonan Tong +2
In this paper, we study the codebook-based near-field beam training for intelligent reflecting surfaces (IRSs) aided wireless system. In the considered model, the near-field beam t…
Two-Stage Hierarchical Beam Training for Near-Field Communications
Chenyu Wu, Changsheng You, Yuanwei Liu +2
Extremely large-scale array (XL-array) has emerged as a promising technology to improve the spectrum efficiency and spatial resolution of future wireless systems. However, the huge…
Active-IRS-Aided Wireless Communication: Fundamentals, Designs and Open Issues
Zhenyu Kang, Changsheng You, Rui Zhang
Intelligent reflecting surface (IRS) has emerged as a promising technology to realize smart radio environment for future wireless communication systems. Existing works in this line…
Active-IRS Aided Wireless Network: System Modeling and Performance Analysis
Yunli Li, Changsheng You, Young Jin Chun
Active intelligent reflecting surface (IRS) enables flexible signal reflection control with \emph{power amplification}, thus effectively compensating the product-distance path-loss…
Fast Near-Field Beam Training for Extremely Large-Scale Array
Yunpu Zhang, Xun Wu, Changsheng You
In this letter, we study efficient near-field beam training design for the extremely large-scale array (XL-array) communication systems. Compared with the conventional far-field be…
Multi-Active Multi-Passive (MAMP)-IRS Aided Wireless Communication: A Multi-Hop Beam Routing Design
Yunpu Zhang, Changsheng You, Beixiong Zheng
Prior studies on intelligent reflecting surface (IRS) have mostly considered wireless communication systems aided by a single passive IRS, which, however, has limited control over…
Multi-Hop Beam Routing for Hybrid Active/Passive IRS Aided Wireless Communications
Yunpu Zhang, Changsheng You
Prior studies on intelligent reflecting surface (IRS) have mostly considered wireless communication systems aided by a single passive IRS, which, however, has limited control over…
Active-Passive IRS aided Wireless Communication: New Hybrid Architecture and Elements Allocation Optimization
Zhenyu Kang, Changsheng You, Rui Zhang
Intelligent reflecting surface (IRS) has emerged as a promising technology to enhance the wireless communication network coverage and capacity by dynamically controlling the radio…
Two-Timescale Design for STAR-RIS Aided NOMA Systems
Chenyu Wu, Changsheng You, Yuanwei Liu +2
Simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) have emerged as a promising technology for achieving full-space coverage. Prior works on…
Joint Sensing and Communication-Rate Control for Energy Efficient Mobile Crowd Sensing
Ziqin Zhou, Xiaoyang Li, Changsheng You +2
Driven by the rapid growth of Internet of Things applications, tremendous data need to be collected by sensors and uploaded to the servers for further process. As a promising solut…
Channel Estimation for STAR-RIS-aided Wireless Communication
Chenyu Wu, Changsheng You, Yuanwei Liu +2
In this letter, we study efficient uplink channel estimation design for a simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted two-user…
A Survey on Channel Estimation and Practical Passive Beamforming Design for Intelligent Reflecting Surface Aided Wireless Communications
Beixiong Zheng, Changsheng You, Weidong Mei +1
Intelligent reflecting surface (IRS) has emerged as a key enabling technology to realize smart and reconfigurable radio environment for wireless communications, by digitally contro…
Intelligent Reflecting Surface Aided Wireless Networks: From Single-Reflection to Multi-Reflection Design and Optimization
Weidong Mei, Beixiong Zheng, Changsheng You +1
Intelligent reflecting surface (IRS) has emerged as a promising technique for wireless communication networks. By dynamically tuning the reflection amplitudes/phase shifts of a lar…
Wireless Communication Aided by Intelligent Reflecting Surface: Active or Passive?
Changsheng You, Rui Zhang
In this letter, we consider an intelligent reflecting surface (IRS)-aided wireless communication system, where an active or passive IRS is employed to assist the communication betw…
IRS-Aided Wireless Relaying: Optimal Deployment and Capacity Scaling
Zhenyu Kang, Changsheng You, Rui Zhang
In this letter, we consider an intelligent reflecting surface (IRS)-aided wireless relaying system, where a decode-and-forward relay (R) is employed to forward data from a source (…
Enabling Smart Reflection in Integrated Air-Ground Wireless Network: IRS Meets UAV
Changsheng You, Zhenyu Kang, Yong Zeng +1
Intelligent reflecting surface (IRS) and unmanned aerial vehicle (UAV) have emerged as two promising technologies to boost the performance of wireless communication networks, by pr…
Channel Estimation for Intelligent Reflecting Surface Assisted Backscatter Communication
Samith Abeywickrama, Changsheng You, Rui Zhang +1
Intelligent reflecting surface (IRS) is a promising technology to improve the performance of backscatter communication systems by smartly reconfiguring the multi-reflection channel…
How to Deploy Intelligent Reflecting Surfaces in Wireless Network: BS-side, User-side, or Both Sides?
Changsheng You, Beixiong Zheng, Weidong Mei +1
The performance of wireless communication systems is fundamentally constrained by the random and uncontrollable wireless channel. By leveraging the recent advance in digitally-cont…
Delay-Optimal Scheduling for IRS-Aided Mobile Edge Computing
Fasheng Zhou, Changsheng You, Rui Zhang
We consider an intelligent reflecting surface (IRS)-aided mobile edge computing (MEC) system, where an IRS is deployed to assist computation offloading from two users to an access…
Efficient Channel Estimation for Double-IRS Aided Multi-User MIMO System
Beixiong Zheng, Changsheng You, Rui Zhang
To achieve the more significant passive beamforming gain in the double-intelligent reflecting surface (IRS) aided system over the conventional single-IRS counterpart, channel state…
UAV Trajectory and Communication Co-design: Flexible Path Discretization and Path Compression
Yijun Guo, Changsheng You, Changchuan Yin +1
The performance optimization of UAV communication systems requires the joint design of UAV trajectory and communication efficiently. To tackle the challenge of infinite design vari…
Uplink Channel Estimation for Double-IRS Assisted Multi-User MIMO
Beixiong Zheng, Changsheng You, Rui Zhang
To achieve the more promising passive beamforming gains in the double-intelligent reflecting surface (IRS) assisted system over the conventional single-IRS system, channel estimati…
Wireless Communication via Double IRS: Channel Estimation and Passive Beamforming Designs
Changsheng You, Beixiong Zheng, Rui Zhang
In this letter, we study efficient channel estimation and passive beamforming designs for a double-intelligent reflecting surface (IRS) aided single-user communication system, wher…