Search Results for author: Chau Yuen

Found 89 papers, 9 papers with code

Temporal Convolutional Memory Networks for Remaining Useful Life Estimation of Industrial Machinery

1 code implementation12 Oct 2018 Lahiru Jayasinghe, Tharaka Samarasinghe, Chau Yuen, Jenny Chen Ni Low, Shuzhi Sam Ge

This paper, introduces a system model that incorporates temporal convolutions with both long term and short term time dependencies.

Data Augmentation

Reconfigurable Intelligent Surface Assisted Multiuser MISO Systems Exploiting Deep Reinforcement Learning

1 code implementation24 Feb 2020 Chongwen Huang, Member, IEEE, Ronghong Mo, Chau Yuen, Senior Member

In this paper, we investigate the joint design of transmit beamforming matrix at the base station and the phase shift matrix at the RIS, by leveraging recent advances in deep reinforcement learning (DRL).

Neural Network simulation reinforcement-learning +1

RF-Based Direction Finding of UAVs Using DNN

2 code implementations1 Dec 2017 Samith Abeywickrama, Lahiru Jayasinghe, Hua Fu, Subashini Nissanka, Chau Yuen

This paper presents a sparse denoising autoencoder (SDAE)-based deep neural network (DNN) for the direction finding (DF) of small unmanned aerial vehicles (UAVs).

Denoising

Few-Shot Specific Emitter Identification via Deep Metric Ensemble Learning

2 code implementations14 Jul 2022 Yu Wang, Guan Gui, Yun Lin, Hsiao-Chun Wu, Chau Yuen, Fumiyuki Adachi

Thus, we focus on few-shot SEI (FS-SEI) for aircraft identification via automatic dependent surveillance-broadcast (ADS-B) signals, and a novel FS-SEI method is proposed, based on deep metric ensemble learning (DMEL).

Ensemble Learning Metric Learning

A Multi-Head Ensemble Multi-Task Learning Approach for Dynamical Computation Offloading

1 code implementation2 Sep 2023 Ruihuai Liang, Bo Yang, Zhiwen Yu, Xuelin Cao, Derrick Wing Kwan Ng, Chau Yuen

To improve the MEC performance, it is required to design an optimal offloading strategy that includes offloading decision (i. e., whether offloading or not) and computational resource allocation of MEC.

Edge-computing Multi-Task Learning

Pervasive Machine Learning for Smart Radio Environments Enabled by Reconfigurable Intelligent Surfaces

1 code implementation8 May 2022 George C. Alexandropoulos, Kyriakos Stylianopoulos, Chongwen Huang, Chau Yuen, Mehdi Bennis, Mérouane Debbah

The emerging technology of Reconfigurable Intelligent Surfaces (RISs) is provisioned as an enabler of smart wireless environments, offering a highly scalable, low-cost, hardware-efficient, and almost energy-neutral solution for dynamic control of the propagation of electromagnetic signals over the wireless medium, ultimately providing increased environmental intelligence for diverse operation objectives.

BIG-bench Machine Learning Multi-Armed Bandits

A Transferable Multi-stage Model with Cycling Discrepancy Learning for Lithium-ion Battery State of Health Estimation

1 code implementation1 Sep 2022 Yan Qin, Chau Yuen, Xunyuan Yin, Biao Huang

A transferable multi-stage SOH estimation model is proposed to perform TL across batteries in the same stage, consisting of four steps.

Transfer Learning

SafeSpace MFNet: Precise and Efficient MultiFeature Drone Detection Network

1 code implementation30 Nov 2022 Misha Urooj Khan, Mahnoor Dil, Muhammad Zeshan Alam, Farooq Alam Orakazi, Abdullah M. Almasoud, Zeeshan Kaleem, Chau Yuen

For optimal bird detection, MFNet-M (Ablation study 2) achieves an impressive precision of 99. 8\%, while for UAV detection, MFNet-L (Ablation study 2) achieves a precision score of 97. 2\%.

object-detection Object Detection

Performance Bounds for Near-Field Localization with Widely-Spaced Multi-Subarray mmWave/THz MIMO

1 code implementation12 Sep 2023 Songjie Yang, Xinyi Chen, Yue Xiu, Wanting Lyu, Zhongpei Zhang, Chau Yuen

By employing the Riemann sum, closed-form CRB expressions are derived for the spherical wavefront-based WSMS (SW-WSMS).

Indoor Sound Source Localization with Probabilistic Neural Network

no code implementations21 Dec 2017 Yingxiang Sun, Jiajia Chen, Chau Yuen, Susanto Rahardja

It is known that adverse environments such as high reverberation and low signal-to-noise ratio (SNR) pose a great challenge to indoor sound source localization.

Direction of Arrival Estimation

DCASE 2018 Challenge: Solution for Task 5

no code implementations11 Dec 2018 Jeremy Chew, Ying-Xiang Sun, Lahiru Jayasinghe, Chau Yuen

To address Task 5 in the Detection and Classification of Acoustic Scenes and Events (DCASE) 2018 challenge, in this paper, we propose an ensemble learning system.

Ensemble Learning General Classification

Deep Learning for UL/DL Channel Calibration in Generic Massive MIMO Systems

no code implementations7 Mar 2019 Chongwen Huang, George C. Alexandropoulos, Alessio Zappone, Chau Yuen, Mérouane Debbah

We then leverage the trained deep neural network with the instantaneously estimated UL channel to calibrate the DL one, which is not observable during the UL transmission phase.

Indoor Signal Focusing with Deep Learning Designed Reconfigurable Intelligent Surfaces

no code implementations19 May 2019 Chongwen Huang, George C. Alexandropoulos, Chau Yuen, Mérouane Debbah

Reconfigurable Intelligent Surfaces (RISs) comprised of tunable unit elements have been recently considered in indoor communication environments for focusing signal reflections to intended user locations.

PSDNet and DPDNet: Efficient channel expansion, Depthwise-Pointwise-Depthwise Inverted Bottleneck Block

no code implementations3 Sep 2019 Guoqing Li, Meng Zhang, Qianru Zhang, Ziyang Chen, Wenzhao Liu, Jiaojie Li, Xuzhao Shen, Jianjun Li, Zhenyu Zhu, Chau Yuen

To design more efficient lightweight concolutional neural netwok, Depthwise-Pointwise-Depthwise inverted bottleneck block (DPD block) is proposed and DPDNet is designed by stacking DPD block.

Resource Allocation in Mobility-Aware Federated Learning Networks: A Deep Reinforcement Learning Approach

no code implementations21 Oct 2019 Huy T. Nguyen, Nguyen Cong Luong, Jun Zhao, Chau Yuen, Dusit Niyato

However, federated learning faces the energy constraints of the workers and the high network resource cost due to the fact that a number of global model transmissions may be required to achieve the target accuracy.

Federated Learning Reinforcement Learning (RL)

Holographic MIMO Surfaces for 6G Wireless Networks: Opportunities, Challenges, and Trends

no code implementations27 Nov 2019 Chongwen Huang, Sha Hu, George C. Alexandropoulos, Alessio Zappone, Chau Yuen, Rui Zhang, Marco Di Renzo, Mérouane Debbah

Future wireless networks are expected to evolve towards an intelligent and software reconfigurable paradigm enabling ubiquitous communications between humans and mobile devices.

Understanding Crowd Behaviors in a Social Event by Passive WiFi Sensing and Data Mining

no code implementations5 Feb 2020 Yuren Zhou, Billy Pik Lik Lau, Zann Koh, Chau Yuen, Benny Kai Kiat Ng

In this paper, therefore, we propose a comprehensive data analysis framework to fully analyze the collected probe requests to extract three types of patterns related to crowd behaviors in a large social event, with the help of statistics, visualization, and unsupervised machine learning.

BIG-bench Machine Learning Clustering +1

Cluster Pruning: An Efficient Filter Pruning Method for Edge AI Vision Applications

no code implementations5 Mar 2020 Chinthaka Gamanayake, Lahiru Jayasinghe, Benny Ng, Chau Yuen

Even though the Convolutional Neural Networks (CNN) has shown superior results in the field of computer vision, it is still a challenging task to implement computer vision algorithms in real-time at the edge, especially using a low-cost IoT device due to high memory consumption and computation complexities in a CNN.

Quantization

Columnwise Element Selection for Computationally Efficient Nonnegative Coupled Matrix Tensor Factorization

no code implementations7 Mar 2020 Thirunavukarasu Balasubramaniam, Richi Nayak, Chau Yuen

Coupled Matrix Tensor Factorization (CMTF) facilitates the integration and analysis of multiple data sources and helps discover meaningful information.

Efficient Nonnegative Tensor Factorization via Saturating Coordinate Descent

no code implementations7 Mar 2020 Thirunavukarasu Balasubramaniam, Richi Nayak, Chau Yuen

With the advancements in computing technology and web-based applications, data is increasingly generated in multi-dimensional form.

Lessons Learned from Accident of Autonomous Vehicle Testing: An Edge Learning-aided Offloading Framework

no code implementations27 Jun 2020 Bo Yang, Xuelin Cao, Xiangfang Li, Chau Yuen, Lijun Qian

This letter proposes an edge learning-based offloading framework for autonomous driving, where the deep learning tasks can be offloaded to the edge server to improve the inference accuracy while meeting the latency constraint.

Autonomous Driving

Predictive Maintenance for Edge-Based Sensor Networks: A Deep Reinforcement Learning Approach

no code implementations7 Jul 2020 Kevin Shen Hoong Ong, Dusit Niyato, Chau Yuen

In this paper, a model-free Deep Reinforcement Learning algorithm is proposed for predictive equipment maintenance from an equipment-based sensor network context.

reinforcement-learning Reinforcement Learning (RL)

Channel Estimation for RIS-Empowered Multi-User MISO Wireless Communications

no code implementations4 Aug 2020 Li Wei, Chongwen Huang, George C. Alexandropoulos, Chau Yuen, Zhaoyang Zhang, Mérouane Debbah

We also discuss the downlink achievable sum rate computation with estimated channels and different precoding schemes for the base station.

Invariant learning based multi-stage identification for Lithium-ion battery performance degradation

no code implementations12 Aug 2020 Yan Qin, Chau Yuen, Stefan Adams

By informing accurate performance (e. g., capacity), health state management plays a significant role in safeguarding battery and its powered system.

Management

Offloading Optimization in Edge Computing for Deep Learning Enabled Target Tracking by Internet-of-UAVs

no code implementations18 Aug 2020 Bo Yang, Xuelin Cao, Chau Yuen, Lijun Qian

This motivates us to consider offloading this type of deep learning (DL) tasks to a mobile edge computing (MEC) server due to limited computational resource and energy budget of the UAV, and further improve the inference accuracy.

Edge-computing

Hybrid Beamforming for RIS-Empowered Multi-hop Terahertz Communications: A DRL-based Method

no code implementations20 Sep 2020 Chongwen Huang, Zhaohui Yang, George C. Alexandropoulos, Kai Xiong, Li Wei, Chau Yuen, Zhaoyang Zhang

Wireless communication in the TeraHertz band (0. 1--10 THz) is envisioned as one of the key enabling technologies for the future six generation (6G) wireless communication systems.

Transforming Energy Networks via Peer to Peer Energy Trading: Potential of Game Theoretic Approaches

no code implementations19 Mar 2018 Wayes Tushar, Chau Yuen, Hamed Mohsenian-Rad, Tapan Saha, H. Vincent Poor, Kristin L Wood

Peer-to-peer (P2P) energy trading has emerged as a next-generation energy management mechanism for the smart grid that enables each prosumer of the network to participate in energy trading with one another and the grid.

Decision Making energy trading +1

Secure Beamforming for Multiple Intelligent Reflecting Surfaces Aided mmWave Systems

no code implementations26 Jun 2020 Yue Xiu, Jun Zhao, Chau Yuen, Zhongpei Zhang, Guan Gui

In this system, the secrecy rate is maximized by controlling the on-off status of each IRS as well as optimizing the phase shift matrix of the IRSs.

Dense Small Satellite Networks for Modern Terrestrial Communication Systems: Benefits, Infrastructure, and Technologies

no code implementations30 Jul 2020 Naveed UL Hassan, Chongwen Huang, Chau Yuen, Ayaz Ahmad, Yan Zhang

Dense small satellite networks (DSSN) in low earth orbits (LEO) can benefit several mobile terrestrial communication systems (MTCS).

Urban Space Insights Extraction using Acoustic Histogram Information

no code implementations10 Dec 2020 Nipun Wijerathne, Billy Pik Lik Lau, Benny Kai Kiat Ng, Chau Yuen

In this paper, we study the implementation of low-cost analogue sound sensors to detect outdoor activities and estimate the raining period in an urban residential area.

Clustering

Multiple-Perspective Clustering of Passive Wi-Fi Sensing Trajectory Data

no code implementations22 Dec 2020 Zann Koh, Yuren Zhou, Billy Pik Lik Lau, Chau Yuen, Bige Tuncer, Keng Hua Chong

Information about the spatiotemporal flow of humans within an urban context has a wide plethora of applications.

Clustering

Refined Nonlinear Rectenna Modeling and Optimal Waveform Design for Multi-User Multi-Antenna Wireless Power Transfer

no code implementations31 Dec 2020 Samith Abeywickrama, Rui Zhang, Chau Yuen

Leveraging this new rectenna model, we first consider the single-ER case and study the multisine-based power waveform design based on the wireless channel to maximize the harvested power at the ER.

Information Theory Information Theory

A Transfer Learning-based State of Charge Estimation for Lithium-Ion Battery at Varying Ambient Temperatures

no code implementations11 Jan 2021 Yan Qin, Stefan Adams, Chau Yuen

After that, once the inability of the reference SoC estimation model is detected, consistent temporal dynamics between temperatures are selected for transfer learning.

Transfer Learning

Time-Series Regeneration with Convolutional Recurrent Generative Adversarial Network for Remaining Useful Life Estimation

no code implementations11 Jan 2021 Xuewen Zhang, Yan Qin, Chau Yuen, Lahiru Jayasinghe, Xiang Liu

Out of this consideration, an enhanced RUL framework focusing on data self-generation is put forward for both non-cyclic and cyclic degradation patterns for the first time.

Generative Adversarial Network Time Series +1

Multi-hop RIS-Empowered Terahertz Communications: A DRL-based Hybrid Beamforming Design

no code implementations22 Jan 2021 Chongwen Huang, Zhaohui Yang, George C. Alexandropoulos, Kai Xiong, Li Wei, Chau Yuen, Zhaoyang Zhang, Merouane Debbah

We investigate the joint design of digital beamforming matrix at the BS and analog beamforming matrices at the RISs, by leveraging the recent advances in deep reinforcement learning (DRL) to combat the propagation loss.

Underwater Acoustic Communication Receiver Using Deep Belief Network

no code implementations26 Feb 2021 Abigail Lee-Leon, Chau Yuen, Dorien Herremans

Our proposed receiver system comprises of DBN based de-noising and classification of the received signal.

Intelligent Spectrum Learning for Wireless Networks with Reconfigurable Intelligent Surfaces

no code implementations2 Mar 2021 Bo Yang, Xuelin Cao, Chongwen Huang, Chau Yuen, Lijun Qian, Marco Di Renzo

Reconfigurable intelligent surface (RIS) has become a promising technology for enhancing the reliability of wireless communications, which is capable of reflecting the desired signals through appropriate phase shifts.

A Joint Energy and Latency Framework for Transfer Learning over 5G Industrial Edge Networks

no code implementations19 Apr 2021 Bo Yang, Omobayode Fagbohungbe, Xuelin Cao, Chau Yuen, Lijun Qian, Dusit Niyato, Yan Zhang

In this paper, we propose a transfer learning (TL)-enabled edge-CNN framework for 5G industrial edge networks with privacy-preserving characteristic.

Privacy Preserving Transfer Learning

IIoT-Enabled Health Monitoring for Integrated Heat Pump System Using Mixture Slow Feature Analysis

no code implementations20 Apr 2021 Yan Qin, Wen-Tai Li, Chau Yuen, Wayes Tushar, Tapan Kumar Saha

This revolution delivers a promising solution for the health monitoring problem of heat pump (HP) system, a vital device widely deployed in modern buildings for heating use, to timely evaluate its operation status to avoid unexpected downtime.

Management

WiFi Fingerprint Clustering for Urban Mobility Analysis

no code implementations4 May 2021 Sumudu HasalaMarakkalage, Billy Pik Lik Lau, Yuren Zhou, Ran Liu, Chau Yuen, Wei Quin Yow, Keng Hua Chong

We propose a system architecture to scan the surrounding WiFi AP, and perform unsupervised learning to demonstrate that it is possible to identify three major insights, namely the indoor POI within a building, neighbourhood activity, and micro-mobility of the users.

Clustering

Relative Localization of Mobile Robots with Multiple Ultra-WideBand Ranging Measurements

no code implementations19 Jul 2021 Zhiqiang Cao, Ran Liu, Chau Yuen, Achala Athukorala, Benny Kai Kiat Ng, Muraleetharan Mathanraj, U-Xuan Tan

We propose an approach to estimate the relative pose between a group of robots by equipping each robot with multiple UWB ranging nodes.

Pose Tracking

Spectrum Learning-Aided Reconfigurable Intelligent Surfaces for 'Green' 6G Networks

no code implementations3 Sep 2021 Bo Yang, Xuelin Cao, Chongwen Huang, Yong Liang Guan, Chau Yuen, Marco Di Renzo, Dusit Niyato, Merouane Debbah, Lajos Hanzo

In the sixth-generation (6G) era, emerging large-scale computing based applications (for example processing enormous amounts of images in real-time in autonomous driving) tend to lead to excessive energy consumption for the end users, whose devices are usually energy-constrained.

Autonomous Driving

Lithium-ion Battery State of Health Estimation based on Cycle Synchronization using Dynamic Time Warping

no code implementations28 Sep 2021 Kate Qi Zhou, Yan Qin, Billy Pik Lik Lau, Chau Yuen, Stefan Adams

The state of health (SOH) estimation plays an essential role in battery-powered applications to avoid unexpected breakdowns due to battery capacity fading.

Dynamic Time Warping Time Series +1

Time-Varying Channel Prediction for RIS-Assisted MU-MISO Networks via Deep Learning

no code implementations9 Nov 2021 Wangyang Xu, Jiancheng An, Yongjun Xu, Chongwen Huang, Lu Gan, Chau Yuen

To mitigate the effects of shadow fading and obstacle blocking, reconfigurable intelligent surface (RIS) has become a promising technology to improve the signal transmission quality of wireless communications by controlling the reconfigurable passive elements with less hardware cost and lower power consumption.

Blocking

Slow-varying Dynamics Assisted Temporal Capsule Network for Machinery Remaining Useful Life Estimation

no code implementations30 Mar 2022 Yan Qin, Chau Yuen, Yimin Shao, Bo Qin, XiaoLi Li

Similarly, the estimation accuracy of the milling machine has been improved by 23. 57% compared to LSTM and 19. 54% compared to CapsNet.

Time Series Time Series Analysis

Deep Reinforcement Learning Based on Location-Aware Imitation Environment for RIS-Aided mmWave MIMO Systems

no code implementations18 May 2022 Wangyang Xu, Jiancheng An, Chongwen Huang, Lu Gan, Chau Yuen

Reconfigurable intelligent surface (RIS) has recently gained popularity as a promising solution for improving the signal transmission quality of wireless communications with less hardware cost and energy consumption.

Reinforcement Learning (RL)

Multi-Agent Deep Reinforcement Learning for Cost- and Delay-Sensitive Virtual Network Function Placement and Routing

no code implementations24 Jun 2022 Shaoyang Wang, Chau Yuen, Wei Ni, Guan Yong Liang, Tiejun Lv

Then, the joint VNF P&R problem is decoupled into two iterative subtasks: placement subtask and routing subtask.

Reconfigurable Intelligent Computational Surfaces: When Wave Propagation Control Meets Computing

no code implementations9 Aug 2022 Bo Yang, Xuelin Cao, Jindan Xu, Chongwen Huang, George C. Alexandropoulos, Linglong Dai, M'erouane Debbah, H. Vincent Poor, Chau Yuen

The envisioned sixth-generation (6G) of wireless networks will involve an intelligent integration of communications and computing, thereby meeting the urgent demands of diverse applications.

Transfer Learning-based State of Health Estimation for Lithium-ion Battery with Cycle Synchronization

no code implementations23 Aug 2022 Kate Qi Zhou, Yan Qin, Chau Yuen

Second, the canonical variates retrieved from the spatial path of the cycle-synchronized time series are used for distribution similarity analysis between the source and target batteries.

Dynamic Time Warping Time Series +2

Vulnerability of Distributed Inverter VAR Control in PV Distributed Energy System

no code implementations31 Aug 2022 Bo Tu, Wen-Tai Li, Chau Yuen

This work studies the potential vulnerability of distributed control schemes in smart grids.

A Hybrid Deep Learning Model-based Remaining Useful Life Estimation for Reed Relay with Degradation Pattern Clustering

no code implementations14 Sep 2022 Chinthaka Gamanayake, Yan Qin, Chau Yuen, Lahiru Jayasinghe, Dominique-Ea Tan, Jenny Low

To provide accurate remaining useful life (RUL) estimation for reed relay, a hybrid deep learning network with degradation pattern clustering is proposed based on the following three considerations.

Clustering

Energy-Efficient Cell-Free Network Assisted by Hybrid RISs

no code implementations4 Oct 2022 Wanting Lyu, Yue Xiu, Songjie Yang, Chau Yuen, Zhongpei Zhang

The proposed hybrid RISs schemes can achieve 92% of the sum rate but 188% of EE of active RISs schemes.

Deep Learning-Based Channel Estimation for Double-RIS Aided Massive MIMO System

no code implementations22 Oct 2022 Mengbing Liu, Xin Li, Boyu Ning, Chongwen Huang, Sumei Sun, Chau Yuen

Reconfigurable Intelligent Surface (RIS) is considered as an energy-efficient solution for future wireless communication networks due to its fast and low-cost configuration.

Clustering and Analysis of GPS Trajectory Data using Distance-based Features

no code implementations1 Dec 2022 Zann Koh, Yuren Zhou, Billy Pik Lik Lau, Ran Liu, Keng Hua Chong, Chau Yuen

We propose a new mobility metric, Daily Characteristic Distance, and use it to generate features for each user together with Origin-Destination matrix features.

Clustering

Holographic MIMO Communications: Theoretical Foundations, Enabling Technologies, and Future Directions

no code implementations2 Dec 2022 Tierui Gong, Panagiotis Gavriilidis, Ran Ji, Chongwen Huang, George C. Alexandropoulos, Li Wei, Zhaoyang Zhang, Mérouane Debbah, H. Vincent Poor, Chau Yuen

In this survey, we present a comprehensive overview of the latest advances in the HMIMO communications paradigm, with a special focus on their physical aspects, their theoretical foundations, as well as the enabling technologies for HMIMO systems.

Digital Twin for Real-time Li-ion Battery State of Health Estimation with Partially Discharged Cycling Data

no code implementations9 Dec 2022 Yan Qin, Anushiya Arunan, Chau Yuen

To meet the fairly high safety and reliability requirements in practice, the state of health (SOH) estimation of Lithium-ion batteries (LIBs), which has a close relationship with the degradation performance, has been extensively studied with the widespread applications of various electronics.

Algorithm Unrolling-Based Distributed Optimization for RIS-Assisted Cell-Free Networks

no code implementations6 Jan 2023 Wangyang Xu, Jiancheng An, Hongbin Li, Lu Gan, Chau Yuen

To improve the efficiency of the D-ADMM in distributed BSs, we develop a monodirectional information exchange strategy with a small signaling overhead.

Distributed Optimization Rolling Shutter Correction

Cooperative Beamforming and RISs Association for Multi-RISs Aided Multi-Users MmWave MIMO Systems through Graph Neural Networks

no code implementations8 Feb 2023 Mengbing Liu, Chongwen Huang, Marco Di Renzo, Merouane Debbah, Chau Yuen

Reconfigurable intelligent surface (RIS) is considered as a promising solution for next-generation wireless communication networks due to a variety of merits, e. g., customizing the communication environment.

Blocking

Spatiotemporal Capsule Neural Network for Vehicle Trajectory Prediction

no code implementations6 Mar 2023 Yan Qin, Yong Liang Guan, Chau Yuen

An accurate vehicle trajectory prediction benefits communication traffic management and network resource allocation for the real-time application of the V2X network.

Attribute Management +1

A Generalized Electromagnetic-Domain Channel Modeling for LOS Holographic MIMO with Arbitrary Surface Placements

no code implementations15 Mar 2023 Tierui Gong, Li Wei, Zhijia Yang, Mérouane Debbah, Chau Yuen

Holographic multiple-input multiple-output (H-MIMO) is considered as one of the most promising technologies to enable future wireless communications in supporting the expected extreme requirements, such as high energy and spectral efficiency.

Robust mmWave Beamforming by Self-Supervised Hybrid Deep Learning

no code implementations9 Mar 2023 Fenghao Zhu, Bohao Wang, Zhaohui Yang, Chongwen Huang, Zhaoyang Zhang, George C. Alexandropoulos, Chau Yuen, Merouane Debbah

Beamforming with large-scale antenna arrays has been widely used in recent years, which is acknowledged as an important part in 5G and incoming 6G.

A Slow-Shifting Concerned Machine Learning Method for Short-term Traffic Flow Forecasting

no code implementations31 Mar 2023 Zann Koh, Yan Qin, Yong Liang Guan, Chau Yuen

However, a crucial challenge in traffic flow forecasting is the slow shifting in temporal peaks between daily and weekly cycles, resulting in the nonstationarity of the traffic flow signal and leading to difficulty in accurate forecasting.

Feature Engineering Scheduling

Lithium-ion Battery Online Knee Onset Detection by Matrix Profile

no code implementations3 Apr 2023 Kate Qi Zhou, Yan Qin, Chau Yuen

Lithium-ion batteries (LiBs) degrade slightly until the knee onset, after which the deterioration accelerates to end of life (EOL).

Dynamic Time Warping

Holographic MIMO Communications with Arbitrary Surface Placements: Near-Field LoS Channel Model and Capacity Limit

no code implementations11 Apr 2023 Tierui Gong, Li Wei, Chongwen Huang, Zhijia Yang, Jiguang He, Mérouane Debbah, Chau Yuen

Envisioned as one of the most promising technologies, holographic multiple-input multiple-output (H-MIMO) recently attracts notable research interests for its great potential in expanding wireless possibilities and achieving fundamental wireless limits.

Environment-Aware Codebook for Reconfigurable Intelligent Surface-Aided MISO Communications

no code implementations24 Apr 2023 Xing Jia, Jiancheng An, Hao liu, Hongshu Liao, Lu Gan, Chau Yuen

Reconfigurable intelligent surface (RIS) is a revolutionary technology that can customize the wireless channel and improve the energy efficiency of next-generation cellular networks.

Semi-Supervised RF Fingerprinting with Consistency-Based Regularization

no code implementations28 Apr 2023 Weidong Wang, Cheng Luo, Jiancheng An, Lu Gan, Hongshu Liao, Chau Yuen

As a promising non-password authentication technology, radio frequency (RF) fingerprinting can greatly improve wireless security.

Data Augmentation

A Federated Learning-based Industrial Health Prognostics for Heterogeneous Edge Devices using Matched Feature Extraction

no code implementations13 May 2023 Anushiya Arunan, Yan Qin, XiaoLi Li, Chau Yuen

The algorithm searches across the heterogeneous locally trained models and matches neurons with probabilistically similar feature extraction functions first, before selectively averaging them to form the federated model parameters.

Federated Learning Privacy Preserving

Attack-Resilient Design for Connected and Automated Vehicles

no code implementations19 Jun 2023 Tianci Yang, Carlos Murguia, Dragan Nesic, Chau Yuen

Given enough system knowledge, adversaries are still able to launch a range of attacks that can surpass the detection scheme by hiding within the system disturbances and uncertainty -- we refer to this class of attacks as \textit{stealthy FDI attacks}.

Radio Generation Using Generative Adversarial Networks with An Unrolled Design

no code implementations24 Jun 2023 Weidong Wang, Jiancheng An, Hongshu Liao, Lu Gan, Chau Yuen

Experimental results with extensive simulations demonstrate that our proposed GAN framework can effectively learn transmitter characteristics and various channel effects, thus accurately modeling for an underlying sampling distribution to synthesize radio signals of high quality.

Towards Ubiquitous Semantic Metaverse: Challenges, Approaches, and Opportunities

no code implementations13 Jul 2023 Kai Li, Billy Pik Lik Lau, Xin Yuan, Wei Ni, Mohsen Guizani, Chau Yuen

In recent years, ubiquitous semantic Metaverse has been studied to revolutionize immersive cyber-virtual experiences for augmented reality (AR) and virtual reality (VR) users, which leverages advanced semantic understanding and representation to enable seamless, context-aware interactions within mixed-reality environments.

Marketing Mixed Reality

A Transmit-Receive Parameter Separable Electromagnetic Channel Model for LoS Holographic MIMO

no code implementations28 Aug 2023 Tierui Gong, Chongwen Huang, Jiguang He, Marco Di Renzo, Mérouane Debbah, Chau Yuen

To support the extremely high spectral efficiency and energy efficiency requirements, and emerging applications of future wireless communications, holographic multiple-input multiple-output (H-MIMO) technology is envisioned as one of the most promising enablers.

Enhancing Near-Field Sensing and Communications with Sparse Arrays: Potentials, Challenges, and Emerging Trends

no code implementations15 Sep 2023 Songjie Yang, Wanting Lyu, Zhongpei Zhang, Chau Yuen

Nevertheless, XL-arrays introduce deviations in electromagnetic propagation compared to traditional arrays, fundamentally challenging the assumption with the planar-wave model.

Joint Power and 3D Trajectory Optimization for UAV-enabled Wireless Powered Communication Networks with Obstacles

no code implementations30 Sep 2023 Hongyang Pan, Yanheng Liu, Geng Sun, Junsong Fan, Shuang Liang, Chau Yuen

For UTTOP, we first introduce a pretreatment method, and then use an improved particle swarm optimization with Normal distribution initialization, Genetic mechanism, Differential mechanism and Pursuit operator (PSO-NGDP) to deal with this sub optimization problem.

Scheduling

Learning Decentralized Traffic Signal Controllers with Multi-Agent Graph Reinforcement Learning

no code implementations7 Nov 2023 Yao Zhang, Zhiwen Yu, Jun Zhang, Liang Wang, Tom H. Luan, Bin Guo, Chau Yuen

Nevertheless, existing MARL algorithms ignore effective information aggregation which is fundamental for improving the learning capacity of decentralized agents.

Graph Learning Multi-agent Reinforcement Learning +1

Joint User Association, Interference Cancellation and Power Control for Multi-IRS Assisted UAV Communications

no code implementations8 Dec 2023 Zhaolong Ning, Hao Hu, Xiaojie Wang, Qingqing Wu, Chau Yuen, F. Richard Yu, Yan Zhang

To address the aforementioned challenges, we propose a new optimization algorithm for joint IRS-user association, trajectory optimization of UAVs, successive interference cancellation (SIC) decoding order scheduling and power allocation to maximize system energy efficiency.

Q-Learning Scheduling

LightGCNet: A Lightweight Geometric Constructive Neural Network for Data-Driven Soft sensors

no code implementations19 Dec 2023 Jing Nan, Yan Qin, Wei Dai, Chau Yuen

Herein, guided by spatial geometric, a lightweight geometric constructive neural network, namely LightGCNet, is proposed, which utilizes compact angle constraint to assign the hidden parameters from dynamic intervals.

CRB Minimization for RIS-aided mmWave Integrated Sensing and Communications

no code implementations2 Jan 2024 Wanting Lyu, Songjie Yang, Yue Xiu, Ya Li, Hongjun He, Chau Yuen, Zhongpei Zhang

In this paper, reconfigurable intelligent surface (RIS) is employed in a millimeter wave (mmWave) integrated sensing and communications (ISAC) system.

A Change Point Detection Integrated Remaining Useful Life Estimation Model under Variable Operating Conditions

no code implementations9 Jan 2024 Anushiya Arunan, Yan Qin, XiaoLi Li, Chau Yuen

During online monitoring, the temporal correlation dynamics of a query device is monitored for breach of the control limit derived in offline training.

Change Point Detection

Distributed Task-Oriented Communication Networks with Multimodal Semantic Relay and Edge Intelligence

no code implementations18 Jan 2024 Jie Guo, Hao Chen, Bin Song, Yuhao Chi, Chau Yuen, Fei Richard Yu, Geoffrey Ye Li, Dusit Niyato

In this article, we present a novel framework, named distributed task-oriented communication networks (DTCN), based on recent advances in multimodal semantic transmission and edge intelligence.

Graph Attention-based Reinforcement Learning for Trajectory Design and Resource Assignment in Multi-UAV Assisted Communication

no code implementations31 Jan 2024 Zikai Feng, Di wu, Mengxing Huang, Chau Yuen

In this paper, a novel graph-attention multi-agent trust region (GA-MATR) reinforcement learning framework is proposed to solve the multi-UAV assisted communication problem.

Decision Making Graph Attention +2

RIS-empowered Topology Control for Distributed Learning in Urban Air Mobility

no code implementations8 Mar 2024 Kai Xiong, Rui Wang, Supeng Leng, Wenyang Che, Chongwen Huang, Chau Yuen

Urban Air Mobility (UAM) expands vehicles from the ground to the near-ground space, envisioned as a revolution for transportation systems.

Federated Learning MULTI-VIEW LEARNING

RIS-Enabled Joint Near-Field 3D Localization and Synchronization in SISO Multipath Environments

no code implementations11 Mar 2024 Han Yan, Hua Chen, Wei Liu, Songjie Yang, Gang Wang, Chau Yuen

Reconfigurable Intelligent Surfaces (RIS) show great promise in the realm of 6th generation (6G) wireless systems, particularly in the areas of localization and communication.

Near-Field Channel Modeling for Holographic MIMO Communications

no code implementations14 Mar 2024 Tierui Gong, Li Wei, Chongwen Huang, George C. Alexandropoulos, Mérouane Debbah, Chau Yuen

Empowered by the latest progress on innovative metamaterials/metasurfaces and advanced antenna technologies, holographic multiple-input multiple-output (H-MIMO) emerges as a promising technology to fulfill the extreme goals of the sixth-generation (6G) wireless networks.

TJCCT: A Two-timescale Approach for UAV-assisted Mobile Edge Computing

no code implementations23 Mar 2024 Zemin Sun, Geng Sun, Qingqing Wu, Long He, Shuang Liang, Hongyang Pan, Dusit Niyato, Chau Yuen, Victor C. M. Leung

Since the problem is a non-convex and NP-hard mixed integer nonlinear programming (MINLP), we propose a two-timescale joint computing resource allocation, computation offloading, and trajectory control (TJCCT) approach for solving the problem.

Edge-computing

Computation Offloading for Multi-server Multi-access Edge Vehicular Networks: A DDQN-based Method

no code implementations21 Feb 2024 Siyu Wang, Bo Yang, Zhiwen Yu, Xuelin Cao, Yan Zhang, Chau Yuen

In this paper, we investigate a multi-user offloading problem in the overlapping domain of a multi-server mobile edge computing system.

Decision Making Edge-computing +1

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