Kai Niu

34 papers A* 1A 1C 2Misc 2Journal 18Unranked 10
YearRankTypeTitle / Venue / Authors
2026 J jnl
WiCaliper: Simultaneous Material and 3D Size Sensing for Everyday Objects Using WiFi.
IEEE J. Sel. Areas Commun.
Zhiyun Yao, Kai Niu, Xuanzhi Wang, Rong Zheng, Junzhe Wang, Duo Zhang, Daqing Zhang
2025 — conf
Let Your Car Listen to Your Respiration Contactlessly with Ubiquitous Acoustic Signals.
UbiComp Companion
Kai Niu, Miao Hu, Yalan Jiang, Duming Cao, Si Cheng, Tianben Wang, Zhenbo Luo, Jian Luan
2025 J jnl
Multi-Person Respiration Monitoring Leveraging Commodity Wi-Fi Devices.
J. Comput. Sci. Technol.
Enze Yi, Kai Niu, Fusang Zhang, Ruiyang Gao, Jun Luo, Daqing Zhang
2025 J jnl
WiCross: Indoor Human Zone-Crossing Detection Using Commodity WiFi Devices.
CoRR
Weiyan Shi, Xuanzhi Wang, Kai Niu, Leye Wang, Daqing Zhang
2024 Misc conf
BFMSense: WiFi Sensing Using Beamforming Feedback Matrix.
NSDI
Enze Yi, Dan Wu, Jie Xiong, Fusang Zhang, Kai Niu, Wenwei Li, Daqing Zhang
2024 J jnl
Embracing Distributed Acoustic Sensing in Car Cabin for Children Presence Detection.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol.
Yuqi Su, Fusang Zhang, Kai Niu, Tianben Wang, Beihong Jin, Zhi Wang, Yalan Jiang, Daqing Zhang, Lili Qiu, Jie Xiong
2024 J jnl
Understanding the Diffraction Model in Static Multipath-Rich Environments for WiFi Sensing System Design.
IEEE Trans. Mob. Comput.
Xuanzhi Wang, Anlan Yu, Kai Niu, Weiyan Shi, Junzhe Wang, Zhiyun Yao, Rahul C. Shah, Hong Lu, Daqing Zhang
2024 Misc conf
Wi2DMeasure: WiFi-based 2D Object Size Measurement.
SenSys
Xuanzhi Wang, Junzhe Wang, Kai Niu, Jie Xiong, Fusang Zhang, Enze Yi, Anlan Yu, Zhiyun Yao, Daqing Zhang
2024 A* conf
WiProfile: Unlocking Diffraction Effects for Sub-Centimeter Target Profiling Using Commodity WiFi Devices.
MobiCom
Zhiyun Yao, Xuanzhi Wang, Kai Niu, Rong Zheng, Junzhe Wang, Daqing Zhang
2023 J jnl
Enabling WiFi Sensing on New-generation WiFi Cards.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol.
Enze Yi, Fusang Zhang, Jie Xiong, Kai Niu, Zhiyun Yao, Daqing Zhang
2023 — conf
How Target's Location and Orientation Affect Velocity Extraction Accuracy in WiFi Sensing Systems.
ACM TUR-C
Kai Niu, Xuanzhi Wang, Zhiyun Yao, Fusang Zhang, Si Cheng, Yalan Jiang, Daqing Zhang
2023 — conf
WiCross: I Can Know When You Cross Using COTS WiFi Devices.
UbiComp/ISWC Adjunct
Weiyan Shi, Xuanzhi Wang, Kai Niu, Leye Wang, Daqing Zhang
2023 J jnl
WiMeasure: Millimeter-level Object Size Measurement with Commodity WiFi Devices.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol.
Xuanzhi Wang, Kai Niu, Anlan Yu, Jie Xiong, Zhiyun Yao, Junzhe Wang, Wenwei Li, Daqing Zhang
2022 C conf
In-Air Handwriting Recognition Using Acoustic Impulse Signals.
ICOST
Kai Niu, Fusang Zhang, Xiaolai Fu, Beihong Jin
2022 J jnl
Placement Matters: Understanding the Effects of Device Placement for WiFi Sensing.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol.
Xuanzhi Wang, Kai Niu, Jie Xiong, Bochong Qian, Zhiyun Yao, Tairong Lou, Daqing Zhang
2022 — conf
Practical Issues and Challenges in CSI-based Integrated Sensing and Communication.
ICC Workshops
Daqing Zhang, Dan Wu, Kai Niu, Xuanzhi Wang, Fusang Zhang, Jian Yao, Dajie Jiang, Fei Qin
2022 J jnl
Practical Issues and Challenges in CSI-based Integrated Sensing and Communication.
CoRR
Daqing Zhang, Dan Wu, Kai Niu, Xuanzhi Wang, Fusang Zhang, Jian Yao, Dajie Jiang, Fei Qin
2022 J jnl
Rethinking Doppler Effect for Accurate Velocity Estimation With Commodity WiFi Devices.
IEEE J. Sel. Areas Commun.
Kai Niu, Xuanzhi Wang, Fusang Zhang, Rong Zheng, Zhiyun Yao, Daqing Zhang
2022 J jnl
Understanding WiFi Signal Frequency Features for Position-Independent Gesture Sensing.
IEEE Trans. Mob. Comput.
Kai Niu, Fusang Zhang, Xuanzhi Wang, Qin Lv, Haitong Luo, Daqing Zhang
2021 J jnl
Unlocking the Beamforming Potential of LoRa for Long-range Multi-target Respiration Sensing.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol.
Fusang Zhang, Zhaoxin Chang, Jie Xiong, Rong Zheng, Junqi Ma, Kai Niu, Beihong Jin, Daqing Zhang
2021 J jnl
WiFi-Sleep: Sleep Stage Monitoring Using Commodity Wi-Fi Devices.
IEEE Internet Things J.
Bohan Yu, Yuxiang Wang, Kai Niu, Youwei Zeng, Tao Gu, Leye Wang, Cuntai Guan, Daqing Zhang
2020 — conf
AcousticThermo: Temperature Monitoring Using Acoustic Pulse Signal.
MSN
Fusang Zhang, Kai Niu, Xiaolai Fu, Beihong Jin
2020 J jnl
Exploring LoRa for Long-range Through-wall Sensing.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol.
Fusang Zhang, Zhaoxin Chang, Kai Niu, Jie Xiong, Beihong Jin, Qin Lv, Daqing Zhang
2020 — conf
Robust Dynamic Hand Gesture Interaction using LTE Terminals.
IPSN
Weiyan Chen, Kai Niu, Deng Zhao, Rong Zheng, Dan Wu, Wei Wang, Leye Wang, Daqing Zhang
2019 — conf
A contactless Morse code text input system using COTS wifi devices.
UbiComp/ISWC Adjunct
Kai Niu, Fusang Zhang, Yuhang Jiang, Zhaoxin Chang, Leye Wang, Daqing Zhang
2019 — conf
A contactless gesture interaction system using LTE (4G) signals.
UbiComp/ISWC Adjunct
Weiyan Chen, Kai Niu, Dan Wu, Deng Zhao, Leye Wang, Daqing Zhang
2019 J jnl
Towards a Diffraction-based Sensing Approach on Human Activity Recognition.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol.
Fusang Zhang, Kai Niu, Jie Xiong, Beihong Jin, Tao Gu, Yuhang Jiang, Daqing Zhang
2019 J jnl
WiMorse: A Contactless Morse Code Text Input System Using Ambient WiFi Signals.
IEEE Internet Things J.
Kai Niu, Fusang Zhang, Yuhang Jiang, Jie Xiong, Qin Lv, Youwei Zeng, Daqing Zhang
2018 — conf
A Fresnel Diffraction Model Based Human Respiration Detection System Using COTS Wi-Fi Devices.
UbiComp/ISWC Adjunct
Kai Niu, Fusang Zhang, Zhaoxin Chang, Daqing Zhang
2018 A conf
Boosting fine-grained activity sensing by embracing wireless multipath effects.
CoNEXT
Kai Niu, Fusang Zhang, Jie Xiong, Xiang Li, Enze Yi, Daqing Zhang
2018 J jnl
From Fresnel Diffraction Model to Fine-grained Human Respiration Sensing with Commodity Wi-Fi Devices.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol.
Fusang Zhang, Daqing Zhang, Jie Xiong, Hao Wang, Kai Niu, Beihong Jin, Yuxiang Wang
2017 — conf
A model based decimeter-scale device-free localization system using COTS wi-fi devices.
UbiComp/ISWC Adjunct
Ruiyang Gao, Hao Wang, Dan Wu, Kai Niu, Enze Yi, Daqing Zhang
2017 C conf
AR-Alarm: An Adaptive and Robust Intrusion Detection System Leveraging CSI from Commodity Wi-Fi.
ICOST
Shengjie Li, Xiang Li, Kai Niu, Hao Wang, Yue Zhang, Daqing Zhang
2017 J jnl
MFDL: A Multicarrier Fresnel Penetration Model based Device-Free Localization System leveraging Commodity Wi-Fi Cards.
CoRR
Hao Wang, Daqing Zhang, Kai Niu, Qin Lv, Yuanhuai Liu, Dan Wu, Ruiyang Gao, Bing Xie