10 citations · 21 across the 12 of their papers we have counts for
7 papers · 1 filter
RISAR: RIS-assisted Human Activity Recognition with Commercial Wi-Fi Devices
Junshuo Liu, Yunlong Huang, Wei Yang +5
Human activity recognition (HAR) holds significant importance in smart homes, security, and healthcare. Existing systems face limitations because of the insufficient spatial divers…
Design and Prototyping of Transmissive RIS-Aided Wireless Communication
Jianan Zhang, Rujing Xiong, Junshuo Liu +2
Reconfigurable Intelligent Surfaces (RISs) exhibit promising enhancements in coverage and data rates for wireless communication systems, particularly in the context of 5G and beyon…
TRTAR: Transmissive RIS-assisted Through-the-wall Human Activity Recognition
Junshuo Liu, Yunlong Huang, Jianan Zhang +2
Device-free human activity recognition plays a pivotal role in wireless sensing. However, current systems often fail to accommodate signal transmission through walls or necessitate…
A Wi-Fi Signal-Based Human Activity Recognition Using High-Dimensional Factor Models
Junshuo Liu, Fuhai Wang, Zhe Li +3
Passive sensing techniques based on Wi-Fi signals have emerged as a promising technology in advanced wireless communication systems due to their widespread application and cost-eff…
RIS-aided Real-time Beam Tracking for a Mobile User via Bayesian Optimization
Junshuo Liu, Rujing Xiong, Jialong Lu +2
The conventional beam management procedure mandates that the user equipment (UE) periodically measure the received signal reference power (RSRP) and transmit these measurements to…
Design of Reconfigurable Intelligent Surfaces for Wireless Communication: A Review
Rujing Xiong, Jianan Zhang, Fuhai Wang +7
This paper addresses the hardware structure of Reconfigurable Intelligent Surfaces (RIS) and presents a comprehensive overview of RIS design, considering both unit design and proto…
Multi-RIS-aided Wireless Communications in Real-world: Prototyping and Field Trials
Rujing Xiong, Jianan Zhang, Xuehui Dong +6
The performance of multiple reconfigurable intelligent surfaces (RISs) receives limited attention in previous studies. This article fills this research gap by investigating the cap…