3 citations · 10 across the 11 of their papers we have counts for
13 papers
Blind Beamforming for Intelligent Reflecting Surfaces: A Gradient Bandit Approach
Wenhai Lai, Mingxiao Li, Kaiming Shen
The beamforming problem of intelligent reflecting surface (IRS) has been extensively considered from an optimization perspective assuming that channel state information (CSI) is av…
Single-RF-Chain Multiuser Semantic Communications via Metasurface Modulation
Mingxiao Li, Wenhai Lai, Hei Victor Cheng +1
Multiuser transmission with multiple radio-frequency (RF) chains enables flexible spatial multiplexing but incurs increased hardware complexity and power consumption. A programmabl…
Eliminating Blind Spots from Wireless Network by Metasurface: A Blind Approach
Wenhai Lai, Mingxiao Li, Kaiming Shen +2
Deploying metasurfaces (MTSs) to eliminate wireless blind spots requires jointly determining the physical placement of MTSs and the meta-atom phase shifts. Existing methods typical…
Shuffling for Semantic Secrecy
Fupei Chen, Liyao Xiang, Haoxiang Sun +2
Deep learning draws heavily on the latest progress in semantic communications. The present paper aims to examine the security aspect of this cutting-edge technique from a novel shu…
Enhancing Communications and Sensing Simultaneously by Zero-Order Optimization of MTS
Wenhai Lai, Kaiming Shen
Metasurface (MTS) comprises an array of meta-atoms, each reflecting and inducing a phase shift into the incident wireless signal. We seek the optimal combination of phase shifts ac…
FollowSpot: Enhancing Wireless Communications via Movable Ceiling-Mounted Metasurfaces
Wenhai Lai, Kaiming Shen, Rui Zhang
This paper studies the optimal placement of ceiling-mounted metasurfaces (MTSs) to help focus the wireless signal beam onto the target receiver, as inspired by the theatre spotligh…
Blind Passive Beamforming for MIMO System
Wenhai Lai, Jiawei Yao, Kaiming Shen
Passive beamforming for the intelligent surface (IS)-aided multiple-input multiple-output (MIMO) communication is a difficult nonconvex problem. It becomes even more challenging un…
Intelligent Surface Assisted Radar Stealth Against Unauthorized ISAC
Fan Xu, Wenhai Lai, Kaiming Shen
The integration of radar sensors and communication networks as envisioned for the 6G wireless networks poses significant security risks, e.g., the user position information can be…
A Semantic Approach to Successive Interference Cancellation for Multiple Access Networks
Mingxiao Li, Kaiming Shen, Shuguang Cui
Differing from the conventional communication system paradigm that models information source as a sequence of (i.i.d. or stationary) random variables, the semantic approach aims at…
Power Allocation for Finite-Blocklength IR-HARQ
Wenyu Wang, Minhao Zhu, Kaiming Shen +2
This letter concerns the power allocation across the multiple transmission rounds under the Incremental Redundancy Hybrid Automatic Repeat reQuest (IR-HARQ) policy, in pursuit of a…
An Efficient Convex-Hull Relaxation Based Algorithm for Multi-User Discrete Passive Beamforming
Wenhai Lai, Zheyu Wu, Yi Feng +2
Intelligent reflecting surface (IRS) is an emerging technology to enhance spatial multiplexing in wireless networks. This letter considers the discrete passive beamforming design f…
Blind Beamforming for Coverage Enhancement with Intelligent Reflecting Surface
Fan Xu, Jiawei Yao, Wenhai Lai +4
Conventional policy for configuring an intelligent reflecting surface (IRS) typically requires channel state information (CSI), thus incurring substantial overhead costs and facing…
Intelligent Surfaces Empowered Wireless Network: Recent Advances and The Road to 6G
Qingqing Wu, Beixiong Zheng, Changsheng You +11
Intelligent surfaces (ISs) have emerged as a key technology to empower a wide range of appealing applications for wireless networks, due to their low cost, high energy efficiency,…