Publications (136)
A Unified Framework for Iterate Convergence of Bregman Proximal Methods
He Chen, Jiaming Fan, Anthony Man-Cho So
Iterate convergence of Bregman proximal methods (BPMs) has long remained open, especially for nonconvex objectives. Recently, \citet{chen2026skl} made progress by establishing iter…
Optimizing Information Freshness via Multiuser Scheduling with Adaptive NOMA/OMA
Qian Wang, He Chen, Changhong Zhao +3
This paper considers a wireless network with a base station (BS) conducting timely status updates to multiple clients via adaptive non-orthogonal multiple access (NOMA)/orthogonal…
Minimizing Age of Information for Real-Time Monitoring in Resource-Constrained Industrial IoT Networks
Qian Wang, He Chen, Yonghui Li +2
This paper considers an Industrial Internet of Thing (IIoT) system with a source monitoring a dynamic process with randomly generated status updates. The status updates are sent to…
Earth-OneVision: Extending Remote Sensing Multimodal Large Language Models to More Sensor Modalities and Tasks
Miaoxin Cai, Guanqun Wang, Wei Zhang +6
RS-MLLMs enable natural-language understanding and spatial reasoning over earth observation imagery. However, existing models support only a narrow range of sensor types and tasks,…
Wireless-Powered Two-Way Relaying with Power Splitting-based Energy Accumulation
Yifan Gu, He Chen, Yonghui Li +1
This paper investigates a wireless-powered two-way relay network (WP-TWRN), in which two sources exchange information with the aid of one amplify-and-forward (AF) relay. Contrary t…
The Power of Large Language Models for Wireless Communication System Development: A Case Study on FPGA Platforms
Yuyang Du, Hongyu Deng, Soung Chang Liew +3
Large language models (LLMs) have garnered significant attention across various research disciplines, including the wireless communication community. There have been several heated…
Distributed Multi-Relay Selection in Accumulate-then-Forward Energy Harvesting Relay Networks
Yifan Gu, He Chen, Yonghui Li +1
This paper investigates a wireless-powered cooperative network (WPCN) consisting of one source-destination pair and multiple decode-and-forward (DF) relays. We develop an energy th…
Short-Packet Two-Way Amplify-and-Forward Relaying
Yifan Gu, He Chen, Yonghui Li +2
This letter investigates an amplify-and-forward two-way relay network (TWRN) for short-packet communications. We consider a classical three-node TWRN consisting of two sources and…
Accelerated Price Adjustment for Fisher Markets with Exact Recovery of Competitive Equilibrium
He Chen, Chonghe Jiang, Anthony Man-Cho So
The canonical price-adjustment process, tâtonnement, typically fails to converge to the exact competitive equilibrium (CE) and requires a high iteration complexity of $\tilde{\mat…
Age of Information-Oriented Probabilistic Link Scheduling for Device-to-Device Networks
Lixin Wang, Qian Wang, He Chen +1
This paper focuses on optimizing the long-term average age of information (AoI) in device-to-device (D2D) networks through age-aware link scheduling. The problem is naturally formu…
Age-of-Information-based Scheduling in Multiuser Uplinks with Stochastic Arrivals: A POMDP Approach
Aoyu Gong, Tong Zhang, He Chen +1
In this paper, we consider a multiuser uplink status update system, where a monitor aims to timely collect randomly generated status updates from multiple end nodes through a share…
A Discrete Time-Switching Protocol for Wireless-Powered Communications with Energy Accumulation
Yifan Gu, He Chen, Yonghui Li +1
This paper investigates a wireless-powered communication network (WPCN) setup with one multi-antenna access point (AP) and one single-antenna source. It is assumed that the AP is c…
Computing Competitive Equilibrium for Chores: Linear Convergence and Lightweight Iteration
He Chen, Chonghe Jiang, Anthony Man-Cho So
Competitive equilibrium (CE) for chores has recently attracted significant attention, with many algorithms proposed to approximately compute it. However, existing algorithms either…
Minimizing Age of Information in Cognitive Radio-based IoT Systems: Underlay or Overlay?
Yifan Gu, He Chen, Chao Zhai +2
We consider a cognitive radio-based Internet-of-Things (CR-IoT) network consisting of one primary IoT (PIoT) system and one secondary IoT (SIoT) system. The IoT devices of both the…
Distributed Power Control in Interference Channels with QoS Constraints and RF Energy Harvesting: A Game-Theoretic Approach
He Chen, Yuanye Ma, Zihuai Lin +2
This paper develops a new distributed power control scheme for a power splitting-based interference channel (IFC) with simultaneous wireless information and power transfer (SWIPT).…
On the Age of Information for Multicast Transmission with Hard Deadlines in IoT Systems
Jie Li, Yong Zhou, He Chen
We consider the multicast transmission of a real-time Internet of Things (IoT) system, where a server transmits time-stamped status updates to multiple IoT devices. We apply a rece…
UHR-Micro: Diagnosing and Mitigating the Resolution Illusion in Earth Observation VLMs
Shuo Ni, Tong Wang, Jing Zhang +4
Vision-Language Models (VLMs) increasingly operate on ultra-high-resolution (UHR) Earth observation imagery, yet they remain vulnerable to a severe scale mismatch between large-sca…
MI-PRUN: Optimize Large Language Model Pruning via Mutual Information
Hao Zhang, Zhibin Zhang, Guangxin Wu +3
Large Language Models (LLMs) have become indispensable across various domains, but this comes at the cost of substantial computational and memory resources. Model pruning addresses…
Pricing and Resource Allocation via Game Theory for a Small-Cell Video Caching System
Jun Li, He Chen, Youjia Chen +3
Evidence indicates that downloading on-demand videos accounts for a dramatic increase in data traffic over cellular networks. Caching popular videos in the storage of small-cell ba…
Dynamics of probabilistic labor markets: statistical physics perspective
He Chen, Jun-ichi Inoue
We introduce a toy probabilistic model to analyze job-matching processes in recent Japanese labor markets for university graduates by means of statistical physics. We show that the…
Construction and Performance of Quantum Burst Error Correction Codes for Correlated Errors
Jihao Fan, Min-Hsiu Hsieh, Hanwu Chen +2
In practical communication and computation systems, errors occur predominantly in adjacent positions rather than in a random manner. In this paper, we develop a stabilizer formalis…
Antenna Selection for MIMO-NOMA Networks
Yuehua Yu, He Chen, Yonghui Li +2
This paper considers the joint antenna selection (AS) problem for a classical two-user non-orthogonal multiple access (NOMA) network where both the base station and users are equip…
Average SEP-Optimal Precoding for Correlated Massive MIMO with ZF Detection: An Asymptotic Analysis
Zheng Dong, Jian-Kang Zhang, He Chen
This paper investigates the symbol error probability~(SEP) of point-to-point massive multiple-input multiple-output (MIMO) systems using equally likely PAM, PSK, and square QAM sig…
Statistical mechanics of human resource allocation: A mathematical modeling of job-matching in labor markets
Jun-ichi Inoue, He Chen
We provide a mathematical model to investigate the human resource allocation problem for agents, say, university graduates who are looking for their positions in labor markets. The…
Age of Information for Multicast Transmission with Fixed and Random Deadlines in IoT Systems
Jie Li, Yong Zhou, He Chen
In this paper, we consider the multicast transmission of a real-time Internet of Things (IoT) system, where an access point (AP) transmits time-stamped status updates to multiple I…
99.9%-fidelity in measuring a superconducting qubit
Can Wang, Feng-Ming Liu, He Chen +9
Despite the significant progress in superconducting quantum computation over the past years, quantum state measurement still lags nearly an order of magnitude behind quantum gate o…
Multi-person 3D Pose Estimation in Crowded Scenes Based on Multi-View Geometry
He Chen, Pengfei Guo, Pengfei Li +2
Epipolar constraints are at the core of feature matching and depth estimation in current multi-person multi-camera 3D human pose estimation methods. Despite the satisfactory perfor…
FuseGrasp: Radar-Camera Fusion for Robotic Grasping of Transparent Objects
Hongyu Deng, Tianfan Xue, He Chen
Transparent objects are prevalent in everyday environments, but their distinct physical properties pose significant challenges for camera-guided robotic arms. Current research is m…
A Low-Complexity Transceiver Design in Sparse Multipath Massive MIMO Channels
Yuehua Yu, Peng Wang, He Chen +2
In this letter, we develop a low-complexity transceiver design, referred to as semi-random beam pairing (SRBP), for sparse multipath massive MIMO channels. By exploring a sparse re…
Minimizing the Age of Information of Cognitive Radio-Based IoT Systems Under A Collision Constraint
Qian Wang, He Chen, Yifan Gu +2
This paper considers a cognitive radio-based IoT monitoring system, consisting of an IoT device that aims to update its measurement to a destination using cognitive radio technique…
Optical Integrated Sensing and Communication for Cooperative Mobile Robotics Design and Experiments
Shengqian Wang, He Chen
Integrated Sensing and Communication (ISAC) is an emerging technology that integrates wireless sensing and communication into a single system, transforming many applications, inclu…
Accumulate then Forward: An Opportunistic Relaying Protocol for Wireless-Powered Cooperative Communications
Ziyi Li, He Chen, Yifan Gu +2
This paper investigates a wireless-powered cooperative communication network consisting of a source, a destination and a multi-antenna decode-and-forward relay. We consider the rel…
Fast Algorithms for Stackelberg Prediction Game with Least Squares Loss
Jiali Wang, He Chen, Rujun Jiang +2
The Stackelberg prediction game (SPG) has been extensively used to model the interactions between the learner and data provider in the training process of various machine learning…
Wireless-Powered Cooperative Communications via a Hybrid Relay
He Chen, Xiangyun Zhou, Yonghui Li +2
In this paper, we consider a wireless-powered cooperative communication network, which consists of a hybrid access-point (AP), a hybrid relay, and an information source. In contras…
Physical-Layer Authentication of Commodity Wi-Fi Devices via Micro-Signals on CSI Curves
Ruiqi Kong, He Chen
This paper presents a new radiometric fingerprint that is revealed by micro-signals in the channel state information (CSI) curves extracted from commodity Wi-Fi devices. We refer t…
Ultra-Reliable Low Latency Cellular Networks: Use Cases, Challenges and Approaches
He Chen, Rana Abbas, Peng Cheng +5
The fifth-generation cellular mobile networks are expected to support mission critical ultra-reliable low latency communication (URLLC) services in addition to the enhanced mobile…
Optimizing Information Freshness in Uplink Multiuser MIMO Networks with Partial Observations
Jingwei Liu, Qian Wang, He Chen
This paper investigates a multiuser scheduling problem within an uplink multiple-input multi-output (MIMO) status update network, consisting of a multi-antenna base station (BS) an…
Secure Status Updates under Eavesdropping: Age of Information-based Physical Layer Security Metrics
He Chen, Qian Wang, Parthajit Mohapatra +1
This letter studies the problem of maintaining information freshness under passive eavesdropping attacks. The classical three-node wiretap channel model is considered, in which a s…
Accumulate and Jam: Towards Secure Communication via A Wireless-Powered Full-Duplex Jammer
Ying Bi, He Chen
This paper develops a new cooperative jamming protocol, termed accumulate-and-jam (AnJ), to improve physical layer security in wireless communications. Specifically, a full-duplex…
Noncoherent and Non-orthogonal Massive SIMO for Critical Industrial IoT Communications
He Chen, Zheng Dong, Branka Vucetic
Towards the realization of ultra-reliable low-latency wireless communications required in critical industrial Internet of Things (IIoT) applications, this paper presents a new nonc…
Beam-On-Graph: Simultaneous Channel Estimation for mmWave MIMO Systems with Multiple Users
Matthew Kokshoorn, He Chen, Yonghui Li +1
This paper is concerned with the channel estimation problem in multi-user millimeter wave (mmWave) wireless systems with large antenna arrays. We develop a novel simultaneous-estim…
Antenna Selection in MIMO Cognitive Radio-Inspired NOMA Systems
Yuehua Yu, He Chen, Yonghui Li +2
This letter investigates a joint antenna selection (AS) problem for a MIMO cognitive radio-inspired non-orthogonal multiple access (CR-NOMA) network. In particular, a new computati…
Harvest-Then-Cooperate: Wireless-Powered Cooperative Communications
He Chen, Yonghui Li, Joao Luiz Rebelatto +2
In this paper, we consider a wireless-powered cooperative communication network consisting of one hybrid access-point (AP), one source, and one relay. In contrast to conventional c…
Set Smoothness Unlocks Clarke Hyper-stationarity in Bilevel Optimization
He Chen, Jiajin Li, Anthony Man-Cho So
Solving bilevel optimization (BLO) problems to global optimality is generally intractable. A common surrogate is to compute a hyper-stationary point -- a stationary point of the hy…
VLMaterial: Vision-Language Model-Based Camera-Radar Fusion for Physics-Grounded Material Identification
Jiangyou Zhu, He Chen
Accurate material recognition is a fundamental capability for intelligent perception systems to interact safely and effectively with the physical world. For instance, distinguishin…
Cooperative Strategies for Wireless-Powered Communications: An Overview
He Chen, Chao Zhai, Yonghui Li +1
Radio frequency (RF) energy transfer and harvesting has been intensively studied recently as a promising approach to significantly extend the lifetime of energy-constrained wireles…
Realization of fractional quantum Hall state with interacting photons
Can Wang, Feng-Ming Liu, Ming-Cheng Chen +10
Fractional quantum Hall (FQH) states, known for their robust topological order and the emergence of non-Abelian anyons, have captured significant interest due to the appealing appl…
Full-Duplex Cooperative Cognitive Radio Networks with Wireless Energy Harvesting
Rui Zhang, He Chen, Phee Lep Yeoh +2
This paper proposes and analyzes a new full-duplex (FD) cooperative cognitive radio network with wireless energy harvesting (EH). We consider that the secondary receiver is equippe…
Fresh-Fi: Enhancing Information Freshness in Commodity WiFi Systems via Customizing Lower Layers
Zixiao Han, Qian Wang, He Chen
Enhancing information freshness in wireless networks has gained significant attention in recent years. To optimize or analyze information freshness, which is often characterized by…
TACL: Threshold-Adaptive Curriculum Learning Strategy for Enhancing Medical Text Understanding
Mucheng Ren, Yucheng Yan, He Chen +3
Medical texts, particularly electronic medical records (EMRs), are a cornerstone of modern healthcare, capturing critical information about patient care, diagnoses, and treatments.…
Age of Information in Reservation Multi-Access Networks with Stochastic Arrivals
Qian Wang, He Chen
This paper investigates the Age of Information (AoI) performance of Frame Slotted ALOHA with Reservation and Data slots (FSA-RD). We consider a symmetric multi-access network where…
Minimizing Age of Information via Hybrid NOMA/OMA
Qian Wang, He Chen, Yonghui Li +1
This paper considers a wireless network with a base station (BS) conducting timely transmission to two clients in a slotted manner via hybrid non-orthogonal multiple access (NOMA)/…
SAMatcher: Co-Visibility Modeling with Segment Anything for Robust Feature Matching
Xu Pan, Qiyuan Ma, Mingyue Dong +3
Reliable correspondence estimation is a fundamental problem in image processing, underpinning applications such as Structure from Motion, visual localization, and image registratio…
Flow Sampling: Network Monitoring in Large-Scale Software-Defined IoT Networks
Yulin Shao, Soung Chang Liew, He Chen +1
Software-defined Internet-of-Things networking (SDIoT) greatly simplifies the network monitoring in large-scale IoT networks by per-flow sampling, wherein the controller keeps trac…
On the Age of Information of Short-Packet Communications with Packet Management
Rui Wang, Yifan Gu, He Chen +2
In this paper, we consider a point-to-point wireless communication system. The source monitors a physical process and generates status update packets according to a Poisson process…
Antenna Selection in MIMO Non-orthogonal Multiple Access Systems
Yuehua Yu, He Chen, Yonghui Li +3
This paper considers the joint antenna selection (AS) problem for a classical two-user MIMO non-orthogonal multiple access (NOMA) system, where both the base station (BS) and users…
EarthGPT-X: A Spatial MLLM for Multi-level Multi-Source Remote Sensing Imagery Understanding with Visual Prompting
Wei Zhang, Miaoxin Cai, Yaqian Ning +6
Recent advances in natural-domain multi-modal large language models (MLLMs) have demonstrated effective spatial reasoning through visual and textual prompting. However, their direc…
Joint Rate Control and Power Allocation for Non-Orthogonal Multiple Access Systems
Wei Bao, He Chen, Yonghui Li +1
This paper investigates the optimal resource allocation of a downlink non-orthogonal multiple access (NOMA) system consisting of one base station and multiple users. Unlike existin…
On the Performance of Multi-tier Heterogeneous Cellular Networks with Idle Mode Capability
Chuan Ma, Ming Ding, He Chen +3
This paper studies the impact of the base station (BS) idle mode capability (IMC) on the network performance of multi-tier and dense heterogeneous cellular networks (HCNs). Differe…
Autonomous Demand Side Management Based on Energy Consumption Scheduling and Instantaneous Load Billing: An Aggregative Game Approach
He Chen, Yonghui Li, Raymond H. Y. Louie +1
In this paper, we investigate a practical demand side management scenario where the selfish consumers compete to minimize their individual energy cost through scheduling their futu…
On the Iterate Convergence of Bregman Projected Gradient Method
He Chen, Anthony Man-Cho So
The iterate convergence of \textit{Bregman projected gradient method} (BPGM) has remained a long-standing open problem, especially for the widely adopted Shannon entropy kernel. Ex…
On the Performance of Multi-Antenna Wireless-Powered Communications with Energy Beamforming
Wenzhu Huang, He Chen, Yonghui Li +1
In this paper, we study the average throughput performance of energy beamforming in a multi-antenna wireless-powered communication network (WPCN). The considered network consists o…
Three-dimensional angular deviation and diffraction efficiency of a grating in Littrow-configuration ECDL
Biao Chen, Y. Liu, Daping He +3
We consider in this paper the angular deviation and diffraction efficiency of the reflection gratings in Littrow-configuration for applications of external cavity diode laser using…
Partially Observable Minimum-Age Scheduling: The Greedy Policy
Yulin Shao, Qi Cao, Soung Chang Liew +1
This paper studies the minimum-age scheduling problem in a wireless sensor network where an access point (AP) monitors the state of an object via a set of sensors. The freshness of…
Optimizing Information Freshness in Two-Hop Status Update Systems under a Resource Constraint
Yifan Gu, Qian Wang, He Chen +2
In this paper, we investigate the age minimization problem for a two-hop relay system, under a resource constraint on the average number of forwarding operations at the relay. We f…
Long heterochromatic paths in heterochromatic triangle free graphs
He Chen, Xueliang Li
In this paper, graphs under consideration are always edge-colored. We consider long heterochromatic paths in heterochromatic triangle free graphs. Two kinds of such graphs are cons…
Curvature: A signature for Action Recognition in Video Sequences
He Chen, Gregory S. Chirikjian
In this paper, a novel signature of human action recognition, namely the curvature of a video sequence, is introduced. In this way, the distribution of sequential data is modeled,…
Multi-Agent SAC Enabled Beamforming Design for Joint Secret Key Generation and Data Transmission
Ziao Wang, Zheng Dong, He Chen +2
Physical layer key generation (PLKG) has emerged as a promising solution for achieving highly secured and low-latency key distribution, offering information-theoretic security that…
Noncoherent Multiuser Massive SIMO for Low-Latency Industrial IoT Communications
Zheng Dong, He Chen, Jian-Kang Zhang +1
In this paper, we consider a multiuser massive single-input multiple-output (SIMO) enabled Industrial Internet of Things (IIoT) communication system. To reduce the latency and over…
Color degree and color neighborhood union conditions for long heterochromatic paths in edge-colored graphs
He Chen, Xueliang Li
Let be an edge-colored graph. A heterochromatic (rainbow, or multicolored) path of is such a path in which no two edges have the same color. Let denote the color d…
Age of Information in Reservation Multi-Access Networks with Stochastic Arrivals: Analysis and Optimization
Qian Wang, He Chen
This paper analyzes and optimizes the average Age of Information (AAoI) of Frame Slotted ALOHA with Reservation and Data slots (FSA-RD) in a multi-access network, where multiple us…
Fountain Code-Inspired Channel Estimation for Multi-user Millimeter Wave MIMO Systems
Matthew Kokshoorn, He Chen, Yonghui Li +1
This paper develops a novel channel estimation approach for multi-user millimeter wave (mmWave) wireless systems with large antenna arrays. By exploiting the inherent mmWave channe…
RACE: A Rate Adaptive Channel Estimation Approach for Millimeter Wave MIMO Systems
Matthew Kokshoorn, He Chen, Yonghui Li +1
In this paper, we consider the channel estimation problem in Millimeter wave (mmWave) wireless systems with large antenna arrays. By exploiting the inherent sparse nature of the mm…
Optimizing Age of Information in Wireless Uplink Networks with Partial Observations
Jingwei Liu, Rui Zhang, Aoyu Gong +1
We consider a wireless uplink network consisting of multiple end devices and an access point (AP). Each device monitors a physical process with stochastic arrival of status updates…
Optimizing AoI at Query in Multiuser Wireless Uplink Networks: A Whittle Index Approach
Jingwei Liu, He Chen
In this paper, we explore how to schedule multiple users to optimize information freshness in a pull-based wireless network, where the status updates from users are requested by ra…
Design and Implementation of Time-Sensitive Wireless IoT Networks on Software-Defined Radio
Jiaxin Liang, He Chen, Soung Chang Liew
Time-sensitive wireless networks are an important enabling building block for many emerging industrial Internet of Things (IoT) applications. Quick prototyping and evaluation of ti…
Distributed Power Splitting for SWIPT in Relay Interference Channels using Game Theory
He Chen, Yonghui Li, Yunxiang Jiang +2
In this paper, we consider simultaneous wireless information and power transfer (SWIPT) in relay interference channels, where multiple source-destination pairs communicate through…
Advancing Embodied Agent Security: From Safety Benchmarks to Input Moderation
Ning Wang, Zihan Yan, Weiyang Li +3
Embodied agents exhibit immense potential across a multitude of domains, making the assurance of their behavioral safety a fundamental prerequisite for their widespread deployment.…
RF-Based Simultaneous Localization and Source Seeking for Multi-Robot Systems
Ke Xu, Rui Zhang, He Chen
This paper considers a radio-frequency (RF)-based simultaneous localization and source-seeking (SLASS) problem in multi-robot systems, where multiple robots jointly localize themse…
Exploiting Energy Accumulation Against Co-channel Interference in Wireless Energy Harvesting MIMO Relaying
Yifan Gu, He Chen, Yonghui Li +1
This paper investigates a three-node multiple-input multiple-output relay system suffering from co-channel interference (CCI) at the multi-antenna relay. Contrary to the convention…
Towards Efficient Graph Convolutional Networks for Point Cloud Handling
Yawei Li, He Chen, Zhaopeng Cui +4
In this paper, we aim at improving the computational efficiency of graph convolutional networks (GCNs) for learning on point clouds. The basic graph convolution that is typically c…
Design of quasi phase matching crystal based on differential gray wolf algorithm
He Chen, ZiHua Zheng, JingHua Sun
This paper focuses on the key problem in the development of nonlinear optical technology, the performance optimization of aperiodically polarized crystals. The performance of the c…
Age-of-Information Dependent Random Access for Massive IoT Networks
He Chen, Yifan Gu, Soung-Chang Liew
As the most well-known application of the Internet of Things (IoT), remote monitoring is now pervasive. In these monitoring applications, information usually has a higher value whe…
A Training-Free Guess What Vision Language Model from Snippets to Open-Vocabulary Object Detection
Guiying Zhu, Bowen Yang, Yin Zhuang +5
Open-Vocabulary Object Detection (OVOD) aims to develop the capability to detect anything. Although myriads of large-scale pre-training efforts have built versatile foundation mode…
Wireless Energy Harvesting Cooperative Communications with Direct Link and Energy Accumulation
Ziyi Li, He Chen, Yonghui Li +1
This paper investigates a wireless energy harvesting cooperative network (WEHCN) consisting of a source, a decode-and-forward (DF) relay and a destination. We consider the relay as…
Ultra-Reliable Short-Packet Communications: Half-Duplex or Full-Duplex Relaying?
Yifan Gu, He Chen, Yonghui Li +1
This letter analyzes and compares the performance of full-duplex relaying (FDR) and half-duplex relaying (HDR) for ultra-reliable short-packet communications. Specifically, we deri…
Beam Allocation for Millimeter-Wave MIMO Tracking Systems
Deyou Zhang, Ang Li, He Chen +4
In this paper, we propose a new beam allocation strategy aiming to maximize the average successful tracking probability (ASTP) of time-varying millimeter-wave MIMO systems. In cont…
Capturing Detailed Deformations of Moving Human Bodies
He Chen, Hyojoon Park, Kutay Macit +1
We present a new method to capture detailed human motion, sampling more than 1000 unique points on the body. Our method outputs highly accurate 4D (spatio-temporal) point coordinat…
Optimizing Information Freshness in Two-Way Relay Networks
Bohai Li, He Chen, Nikolaos Pappas +1
In this paper, we investigate an amplify-and-forward (AF) based two-way cooperative status update system, where two sources aim to exchange status updates with each other as timely…
The Influence of Surface Topography and Surface Chemistry on the Anti-Adhesive Performance of Nanoporous Monoliths
Anna Eichler-Volf, Longjian Xue, Gregor Dornberg +7
We designed spongy monoliths allowing liquid delivery to their surfaces through continuous nanopore systems (mean pore diameter ca. 40 nm). These nanoporous monoliths were flat or…
An Adaptive Transmission Protocol for Wireless-Powered Cooperative Communications
Yifan Gu, He Chen, Yonghui Li +1
In this paper, we consider a wireless-powered cooperative communication network, which consists of one hybrid access point (AP), one source and one relay to assist information tran…
Spectrum Sharing in RF-Powered Cognitive Radio Networks using Game Theory
Yuanye Ma, He Chen, Zihuai Lin +2
We investigate the spectrum sharing problem of a radio frequency (RF)-powered cognitive radio network, where a multi-antenna secondary user (SU) harvests energy from RF signals rad…
ISAC-Enabled Grant-Free Uplink via Artificial-Path Delay Modulation
Ruiqi Kong, He Chen
This paper proposes an integrated sensing and communication (ISAC)-enabled grant-free uplink framework based on artificial-path delay modulation. A grant-free user equipment (g-UE)…
Practical Cross-Band Channel Prediction for AI-RAN via Physics-Guided Deep Unfolding
Ruiqi Kong, He Chen, Xiaojun Lin
To make cross-band channel prediction practical for AI-native RAN, algorithms must generalize across diverse environments and support real-time inference. Existing approaches achie…
Learning curve for collective behavior of zero-intelligence agents in successive job-hunting processes with a diversity of Jaynes-Shannon's MaxEnt principle
He Chen, Jun-ichi Inoue
Inspired by the unsupervised learning or self-organization in the machine learning context, here we attempt to draw `learning curve' for the collective behavior of job-seeking `zer…
Optimizing Information Freshness of IEEE 802.11ax Uplink OFDMA-Based Random Access
Jingwei Liu, Qian Wang, He Chen
The latest WiFi standard, IEEE 802.11ax (WiFi 6), introduces a novel uplink random access mechanism called uplink orthogonal frequency division multiple access-based random access…
DeepCRF: Deep Learning-Enhanced CSI-Based RF Fingerprinting for Channel-Resilient WiFi Device Identification
Ruiqi Kong, He Chen
This paper presents DeepCRF, a new framework that harnesses deep learning to extract subtle micro-signals from channel state information (CSI) measurements, enabling robust and res…
Shortest Path to Boundary for Self-Intersecting Meshes
He Chen, Elie Diaz, Cem Yuksel
We introduce a method for efficiently computing the exact shortest path to the boundary of a mesh from a given internal point in the presence of self-intersections. We provide a fo…
Constraints on large-extra-dimensions model through 125 GeV Higgs pair production at the LHC
Hao Sun, Ya-Jin Zhou, He Chen
Based on the analysis of 5 fb^-1 of data at the LHC, the ATLAS and CMS collaborations have presented evidence for a Higgs boson with a mass in the 125 GeV range. We consider the 12…
Consecutive Pretraining: A Knowledge Transfer Learning Strategy with Relevant Unlabeled Data for Remote Sensing Domain
Tong Zhang, Peng Gao, Hao Dong +4
Currently, under supervised learning, a model pretrained by a large-scale nature scene dataset and then fine-tuned on a few specific task labeling data is the paradigm that has dom…