Search Results for author: Khaled B. Letaief

Found 86 papers, 31 papers with code

A Tractable Approach to Massive Communication and Ubiquitous Connectivity in 6G Standardization

no code implementations19 Jun 2025 Junyi Jiang, Wei Chen, Xin Guo, Shenghui Song, Ying Jun, Zhang, Zhu Han, Merouane Debbah, Khaled B. Letaief

The full-scale 6G standardization has attracted considerable recent attention, especially since the first 3GPP-wide 6G workshop held in March 2025.

Multimodal Deep Learning-Empowered Beam Prediction in Future THz ISAC Systems

no code implementations5 May 2025 Kai Zhang, Wentao Yu, Hengtao He, Shenghui Song, Jun Zhang, Khaled B. Letaief

Integrated sensing and communication (ISAC) systems operating at terahertz (THz) bands are envisioned to enable both ultra-high data-rate communication and precise environmental awareness for next-generation wireless networks.

Beam Prediction Deep Learning +5

Satellite Edge Artificial Intelligence with Large Models: Architectures and Technologies

no code implementations2 Apr 2025 Yuanming Shi, Jingyang Zhu, Chunxiao Jiang, Linling Kuang, Khaled B. Letaief

To address these challenges, satellite edge AI provides a paradigm shift from ground-based to on-board data processing by leveraging the integrated communication-and-computation capabilities in space computing power networks (Space-CPN), thereby enhancing the timeliness, effectiveness, and trustworthiness for remote sensing downstream tasks.

Multi-Modal Self-Supervised Semantic Communication

no code implementations18 Mar 2025 Hang Zhao, Hongru Li, Dongfang Xu, Shenghui Song, Khaled B. Letaief

Semantic communication is emerging as a promising paradigm that focuses on the extraction and transmission of semantic meanings using deep learning techniques.

Self-Supervised Learning Semantic Communication

PPO-Based Vehicle Control for Ramp Merging Scheme Assisted by Enhanced C-V2X

1 code implementation22 Jan 2025 Qiong Wu, Maoxin Ji, Pingyi Fan, Kezhi Wang, Nan Cheng, Wen Chen, Khaled B. Letaief

On-ramp merging presents a critical challenge in autonomous driving, as vehicles from merging lanes need to dynamically adjust their positions and speeds while monitoring traffic on the main road to prevent collisions.

Autonomous Driving

Siamese Machine Unlearning with Knowledge Vaporization and Concentration

1 code implementation2 Dec 2024 Songjie Xie, Hengtao He, Shenghui Song, Jun Zhang, Khaled B. Letaief

In this work, we propose the concepts of knowledge vaporization and concentration to selectively erase learned knowledge from specific data points while maintaining representations for the remaining data.

Machine Unlearning

Toward Real-Time Edge AI: Model-Agnostic Task-Oriented Communication with Visual Feature Alignment

1 code implementation1 Dec 2024 Songjie Xie, Hengtao He, Shenghui Song, Jun Zhang, Khaled B. Letaief

Task-oriented communication presents a promising approach to improve the communication efficiency of edge inference systems by optimizing learning-based modules to extract and transmit relevant task information.

DRL-Based Optimization for AoI and Energy Consumption in C-V2X Enabled IoV

1 code implementation20 Nov 2024 Zheng Zhang, Qiong Wu, Pingyi Fan, Nan Cheng, Wen Chen, Khaled B. Letaief

Therefore, this paper analyzes the effects of multi-priority queues and NOMA on AoI in the C-V2X vehicular communication system and proposes an energy consumption and AoI optimization method based on DRL.

Deep Reinforcement Learning Scheduling

Federated Low-Rank Adaptation with Differential Privacy over Wireless Networks

no code implementations12 Nov 2024 Tianqu Kang, Zixin Wang, Hengtao He, Jun Zhang, Shenghui Song, Khaled B. Letaief

Fine-tuning large pre-trained foundation models (FMs) on distributed edge devices presents considerable computational and privacy challenges.

Federated Learning parameter-efficient fine-tuning

Semantic-Aware Resource Management for C-V2X Platooning via Multi-Agent Reinforcement Learning

1 code implementation7 Nov 2024 Wenjun Zhang, Qiong Wu, Pingyi Fan, Kezhi Wang, Nan Cheng, Wen Chen, Khaled B. Letaief

In this paper, we introduce semantic communication into a cellular vehicle-to-everything (C-V2X)- based autonomous vehicle platoon system for the first time, aiming to achieve efficient management of communication resources in a dynamic environment.

Decision Making Fairness +7

V2X-Assisted Distributed Computing and Control Framework for Connected and Automated Vehicles under Ramp Merging Scenario

1 code implementation30 Oct 2024 Qiong Wu, Jiahou Chu, Pingyi Fan, Kezhi Wang, Nan Cheng, Wen Chen, Khaled B. Letaief

Firstly, a centralized cooperative trajectory planning problem is formulated subject to the safely constraints and traffic performance in ramp merging scenario, where the trajectories of all vehicles are jointly optimized.

Distributed Computing Model Predictive Control +1

Blockchain-Enabled Variational Information Bottleneck for Data Extraction Based on Mutual Information in Internet of Vehicles

no code implementations20 Sep 2024 Cui Zhang, Wenjun Zhang, Qiong Wu, Pingyi Fan, Nan Cheng, Wen Chen, Khaled B. Letaief

The Internet of Vehicles (IoV) network can address the issue of limited computing resources and data processing capabilities of individual vehicles, but it also brings the risk of privacy leakage to vehicle users.

Data Compression Data Interaction

DRL-Based Federated Self-Supervised Learning for Task Offloading and Resource Allocation in ISAC-Enabled Vehicle Edge Computing

1 code implementation27 Aug 2024 Xueying Gu, Qiong Wu, Pingyi Fan, Nan Cheng, Wen Chen, Khaled B. Letaief

Our improved algorithm offloads partial task to RSU and optimizes energy consumption by adjusting transmission power, CPU frequency, and task assignment ratios, balancing local and RSU-based training.

Edge-computing ISAC +1

DRL-Based Resource Allocation for Motion Blur Resistant Federated Self-Supervised Learning in IoV

1 code implementation17 Aug 2024 Xueying Gu, Qiong Wu, Pingyi Fan, Qiang Fan, Nan Cheng, Wen Chen, Khaled B. Letaief

In the Internet of Vehicles (IoV), Federated Learning (FL) provides a privacy-preserving solution by aggregating local models without sharing data.

Deep Reinforcement Learning Federated Learning +2

A Survey on Integrated Sensing, Communication, and Computation

no code implementations15 Aug 2024 Dingzhu Wen, Yong Zhou, Xiaoyang Li, Yuanming Shi, Kaibin Huang, Khaled B. Letaief

Existing techniques like integrated communication and computation (ICC), integrated sensing and computation (ISC), and integrated sensing and communication (ISAC) have made partial strides in addressing this challenge, but they fall short of meeting the extreme performance requirements.

Integrated sensing and communication ISAC +1

Reconfigurable Intelligent Surface Aided Vehicular Edge Computing: Joint Phase-shift Optimization and Multi-User Power Allocation

1 code implementation18 Jul 2024 Kangwei Qi, Qiong Wu, Pingyi Fan, Nan Cheng, Wen Chen, Khaled B. Letaief

To address the scheme, we propose an innovative deep reinforcement learning (DRL) framework that combines the Deep Deterministic Policy Gradient (DDPG) algorithm for optimizing RIS phase-shift coefficients and the Multi-Agent Deep Deterministic Policy Gradient (MADDPG) algorithm for optimizing the power allocation of vehicle user (VU).

Deep Reinforcement Learning Edge-computing

Distributed Deep Reinforcement Learning Based Gradient Quantization for Federated Learning Enabled Vehicle Edge Computing

no code implementations11 Jul 2024 Cui Zhang, Wenjun Zhang, Qiong Wu, Pingyi Fan, Qiang Fan, Jiangzhou Wang, Khaled B. Letaief

Federated Learning (FL) can protect the privacy of the vehicles in vehicle edge computing (VEC) to a certain extent through sharing the gradients of vehicles' local models instead of local data.

Deep Reinforcement Learning Edge-computing +2

Graph Neural Networks and Deep Reinforcement Learning Based Resource Allocation for V2X Communications

1 code implementation9 Jul 2024 Maoxin Ji, Qiong Wu, Pingyi Fan, Nan Cheng, Wen Chen, Jiangzhou Wang, Khaled B. Letaief

In the rapidly evolving landscape of Internet of Vehicles (IoV) technology, Cellular Vehicle-to-Everything (C-V2X) communication has attracted much attention due to its superior performance in coverage, latency, and throughput.

Deep Reinforcement Learning

Optimizing Age of Information in Vehicular Edge Computing with Federated Graph Neural Network Multi-Agent Reinforcement Learning

1 code implementation1 Jul 2024 Wenhua Wang, Qiong Wu, Pingyi Fan, Nan Cheng, Wen Chen, Jiangzhou Wang, Khaled B. Letaief

This paper focuses on the Age of Information (AoI) as a key metric for data freshness and explores task offloading issues for vehicles under RSU communication resource constraints.

Deep Reinforcement Learning Edge-computing +3

Low-Complexity CSI Feedback for FDD Massive MIMO Systems via Learning to Optimize

no code implementations24 Jun 2024 Yifan Ma, Hengtao He, Shenghui Song, Jun Zhang, Khaled B. Letaief

In frequency-division duplex (FDD) massive multiple-input multiple-output (MIMO) systems, the growing number of base station antennas leads to prohibitive feedback overhead for downlink channel state information (CSI).

Compressive Sensing Decoder

Deep-Reinforcement-Learning-Based AoI-Aware Resource Allocation for RIS-Aided IoV Networks

1 code implementation17 Jun 2024 Kangwei Qi, Qiong Wu, Pingyi Fan, Nan Cheng, Wen Chen, Jiangzhou Wang, Khaled B. Letaief

Reconfigurable Intelligent Surface (RIS) is a pivotal technology in communication, offering an alternative path that significantly enhances the link quality in wireless communication environments.

Deep Reinforcement Learning

Semantic-Aware Spectrum Sharing in Internet of Vehicles Based on Deep Reinforcement Learning

1 code implementation11 Jun 2024 Zhiyu Shao, Qiong Wu, Pingyi Fan, Nan Cheng, Wen Chen, Jiangzhou Wang, Khaled B. Letaief

This optimization encompasses the optimal link of V2V and V2I sharing strategies, the transmission power for vehicles sending semantic information and the length of transmitted semantic symbols, aiming at maximizing HSSE of V2I and enhancing success rate of effective semantic information transmission (SRS) of V2V.

Deep Reinforcement Learning reinforcement-learning +1

Hybrid Digital-Analog Semantic Communications

no code implementations21 May 2024 Huiqiang Xie, Zhijin Qin, Zhu Han, Khaled B. Letaief

Digital and analog semantic communications (SemCom) face inherent limitations such as data security concerns in analog SemCom, as well as leveling-off and cliff-edge effects in digital SemCom.

Denoising Semantic Communication

Federated Learning With Energy Harvesting Devices: An MDP Framework

no code implementations17 May 2024 Kai Zhang, Xuanyu Cao, Khaled B. Letaief

Furthermore, for unknown channels and harvested energy statistics, we develop a structure-enhanced deep reinforcement learning algorithm that leverages the monotone structure of the optimal policy to improve the training performance.

Deep Reinforcement Learning Federated Learning +1

Tackling Distribution Shifts in Task-Oriented Communication with Information Bottleneck

1 code implementation15 May 2024 Hongru Li, Jiawei Shao, Hengtao He, Shenghui Song, Jun Zhang, Khaled B. Letaief

Specifically, we propose an invariant feature encoding approach based on the IB principle and IRM framework for domainshift generalization, which aims to find the causal relationship between the input data and task result by minimizing the complexity and domain dependence of the encoded feature.

image-classification Image Classification +1

Semantic MIMO Systems for Speech-to-Text Transmission

no code implementations13 May 2024 Zhenzi Weng, Zhijin Qin, Huiqiang Xie, Xiaoming Tao, Khaled B. Letaief

Semantic communications have been utilized to execute numerous intelligent tasks by transmitting task-related semantic information instead of bits.

Semantic Communication Speech-to-Text

Satellite Federated Edge Learning: Architecture Design and Convergence Analysis

no code implementations2 Apr 2024 Yuanming Shi, Li Zeng, Jingyang Zhu, Yong Zhou, Chunxiao Jiang, Khaled B. Letaief

Although promising, the dynamics of LEO networks, characterized by the high mobility of satellites and short ground-to-satellite link (GSL) duration, pose unique challenges for FEEL.

A Robust Semantic Communication System for Image

no code implementations14 Mar 2024 Xiang Peng, Zhijin Qin, Xiaoming Tao, Jianhua Lu, Khaled B. Letaief

Semantic communications have gained significant attention as a promising approach to address the transmission bottleneck, especially with the continuous development of 6G techniques.

Semantic Communication

Privacy for Fairness: Information Obfuscation for Fair Representation Learning with Local Differential Privacy

no code implementations16 Feb 2024 Songjie Xie, Youlong Wu, Jiaxuan Li, Ming Ding, Khaled B. Letaief

Based on the proposed method, we further develop a variational representation encoding approach that simultaneously achieves fairness and LDP.

Fairness Representation Learning

Cooperative Edge Caching Based on Elastic Federated and Multi-Agent Deep Reinforcement Learning in Next-Generation Network

1 code implementation18 Jan 2024 Qiong Wu, Wenhua Wang, Pingyi Fan, Qiang Fan, Huiling Zhu, Khaled B. Letaief

Finally, we propose a multi-agent deep reinforcement learning (MADRL) based algorithm to decide where the predicted popular contents are collaboratively cached among SBSs.

Deep Reinforcement Learning Federated Learning +1

When Large Language Model Agents Meet 6G Networks: Perception, Grounding, and Alignment

no code implementations15 Jan 2024 Minrui Xu, Dusit Niyato, Jiawen Kang, Zehui Xiong, Shiwen Mao, Zhu Han, Dong In Kim, Khaled B. Letaief

AI agents based on multimodal large language models (LLMs) are expected to revolutionize human-computer interaction and offer more personalized assistant services across various domains like healthcare, education, manufacturing, and entertainment.

Integrated sensing and communication Language Modeling +2

Joint Channel Estimation and Cooperative Localization for Near-Field Ultra-Massive MIMO

no code implementations21 Dec 2023 Ruoxiao Cao, Hengtao He, Xianghao Yu, Shenghui Song, Kaibin Huang, Jun Zhang, Yi Gong, Khaled B. Letaief

To address the joint channel estimation and cooperative localization problem for near-field UM-MIMO systems, we propose a variational Newtonized near-field channel estimation (VNNCE) algorithm and a Gaussian fusion cooperative localization (GFCL) algorithm.

Bayes-Optimal Unsupervised Learning for Channel Estimation in Near-Field Holographic MIMO

no code implementations16 Dec 2023 Wentao Yu, Hengtao He, Xianghao Yu, Shenghui Song, Jun Zhang, Ross Murch, Khaled B. Letaief

In this paper, we address the fundamental challenge of designing a low-complexity Bayes-optimal channel estimator in near-field HMIMO systems operating in unknown EM environments.

Denoising

Generative AI for Physical Layer Communications: A Survey

no code implementations9 Dec 2023 Nguyen Van Huynh, Jiacheng Wang, Hongyang Du, Dinh Thai Hoang, Dusit Niyato, Diep N. Nguyen, Dong In Kim, Khaled B. Letaief

The recent evolution of generative artificial intelligence (GAI) leads to the emergence of groundbreaking applications such as ChatGPT, which not only enhances the efficiency of digital content production, such as text, audio, video, or even network traffic data, but also enriches its diversity.

Diversity Survey

URLLC-Awared Resource Allocation for Heterogeneous Vehicular Edge Computing

no code implementations30 Nov 2023 Qiong Wu, Wenhua Wang, Pingyi Fan, Qiang Fan, Jiangzhou Wang, Khaled B. Letaief

Vehicular edge computing (VEC) is a promising technology to support real-time vehicular applications, where vehicles offload intensive computation tasks to the nearby VEC server for processing.

Deep Reinforcement Learning Edge-computing

Learning Bayes-Optimal Channel Estimation for Holographic MIMO in Unknown EM Environments

no code implementations14 Nov 2023 Wentao Yu, Hengtao He, Xianghao Yu, Shenghui Song, Jun Zhang, Ross D. Murch, Khaled B. Letaief

Holographic MIMO (HMIMO) has recently been recognized as a promising enabler for future 6G systems through the use of an ultra-massive number of antennas in a compact space to exploit the propagation characteristics of the electromagnetic (EM) channel.

Over-the-Air Federated Learning and Optimization

no code implementations16 Oct 2023 Jingyang Zhu, Yuanming Shi, Yong Zhou, Chunxiao Jiang, Wei Chen, Khaled B. Letaief

We first provide a comprehensive study on the convergence of AirComp-based FedAvg (AirFedAvg) algorithms under both strongly convex and non-convex settings with constant and diminishing learning rates in the presence of data heterogeneity.

Federated Learning

Deep Learning for Near-Field XL-MIMO Transceiver Design: Principles and Techniques

no code implementations18 Sep 2023 Wentao Yu, Yifan Ma, Hengtao He, Shenghui Song, Jun Zhang, Khaled B. Letaief

Massive multiple-input multiple-output (MIMO) has been a critical enabling technology in 5th generation (5G) wireless networks.

Binary Federated Learning with Client-Level Differential Privacy

no code implementations7 Aug 2023 Lumin Liu, Jun Zhang, Shenghui Song, Khaled B. Letaief

To improve communication efficiency and achieve a better privacy-utility trade-off, we propose a communication-efficient FL training algorithm with differential privacy guarantee.

Federated Learning Privacy Preserving

Large Language Models Empowered Autonomous Edge AI for Connected Intelligence

no code implementations6 Jul 2023 Yifei Shen, Jiawei Shao, Xinjie Zhang, Zehong Lin, Hao Pan, Dongsheng Li, Jun Zhang, Khaled B. Letaief

The evolution of wireless networks gravitates towards connected intelligence, a concept that envisions seamless interconnectivity among humans, objects, and intelligence in a hyper-connected cyber-physical world.

Code Generation Federated Learning +3

Task-Oriented Communication with Out-of-Distribution Detection: An Information Bottleneck Framework

1 code implementation21 May 2023 Hongru Li, Wentao Yu, Hengtao He, Jiawei Shao, Shenghui Song, Jun Zhang, Khaled B. Letaief

Task-oriented communication is an emerging paradigm for next-generation communication networks, which extracts and transmits task-relevant information, instead of raw data, for downstream applications.

Informativeness Out-of-Distribution Detection

FedNC: A Secure and Efficient Federated Learning Method with Network Coding

no code implementations5 May 2023 Yuchen Shi, Zheqi Zhu, Pingyi Fan, Khaled B. Letaief, Chenghui Peng

Federated Learning (FL) is a promising distributed learning mechanism which still faces two major challenges, namely privacy breaches and system efficiency.

Federated Learning

FedLP: Layer-wise Pruning Mechanism for Communication-Computation Efficient Federated Learning

1 code implementation11 Mar 2023 Zheqi Zhu, Yuchen Shi, Jiajun Luo, Fei Wang, Chenghui Peng, Pingyi Fan, Khaled B. Letaief

By adopting layer-wise pruning in local training and federated updating, we formulate an explicit FL pruning framework, FedLP (Federated Layer-wise Pruning), which is model-agnostic and universal for different types of deep learning models.

Federated Learning

Message Passing Meets Graph Neural Networks: A New Paradigm for Massive MIMO Systems

1 code implementation14 Feb 2023 Hengtao He, Xianghao Yu, Jun Zhang, Shenghui Song, Khaled B. Letaief

As one of the core technologies for 5G systems, massive multiple-input multiple-output (MIMO) introduces dramatic capacity improvements along with very high beamforming and spatial multiplexing gains.

Graph Neural Network

An Adaptive and Robust Deep Learning Framework for THz Ultra-Massive MIMO Channel Estimation

1 code implementation29 Nov 2022 Wentao Yu, Yifei Shen, Hengtao He, Xianghao Yu, Shenghui Song, Jun Zhang, Khaled B. Letaief

For practical usage, the proposed framework is further extended to wideband THz UM-MIMO systems with beam squint effect.

Lightweight and Flexible Deep Equilibrium Learning for CSI Feedback in FDD Massive MIMO

no code implementations28 Nov 2022 Yifan Ma, Wentao Yu, Xianghao Yu, Jun Zhang, Shenghui Song, Khaled B. Letaief

In this paper, we propose a lightweight and flexible deep learning-based CSI feedback approach by capitalizing on deep equilibrium models.

Blind Performance Prediction for Deep Learning Based Ultra-Massive MIMO Channel Estimation

no code implementations15 Nov 2022 Wentao Yu, Hengtao He, Xianghao Yu, Shenghui Song, Jun Zhang, Khaled B. Letaief

Reliability is of paramount importance for the physical layer of wireless systems due to its decisive impact on end-to-end performance.

Over-the-Air Computation for 6G: Foundations, Technologies, and Applications

no code implementations19 Oct 2022 Zhibin Wang, Yapeng Zhao, Yong Zhou, Yuanming Shi, Chunxiao Jiang, Khaled B. Letaief

The rapid advancement of artificial intelligence technologies has given rise to diversified intelligent services, which place unprecedented demands on massive connectivity and gigantic data aggregation.

Augmented Deep Unfolding for Downlink Beamforming in Multi-cell Massive MIMO With Limited Feedback

no code implementations3 Sep 2022 Yifan Ma, Xianghao Yu, Jun Zhang, S. H. Song, Khaled B. Letaief

In limited feedback multi-user multiple-input multiple-output (MU-MIMO) cellular networks, users send quantized information about the channel conditions to the associated base station (BS) for downlink beamforming.

Quantization

Hybrid Far- and Near-Field Channel Estimation for THz Ultra-Massive MIMO via Fixed Point Networks

1 code implementation10 May 2022 Wentao Yu, Yifei Shen, Hengtao He, Xianghao Yu, Jun Zhang, Khaled B. Letaief

We draw inspirations from fixed point theory to develop an efficient deep learning based channel estimator with adaptive complexity and linear convergence guarantee.

Graph Neural Networks for Wireless Communications: From Theory to Practice

1 code implementation21 Mar 2022 Yifei Shen, Jun Zhang, S. H. Song, Khaled B. Letaief

For design guidelines, we propose a unified framework that is applicable to general design problems in wireless networks, which includes graph modeling, neural architecture design, and theory-guided performance enhancement.

Communication-Efficient Federated Distillation with Active Data Sampling

no code implementations14 Mar 2022 Lumin Liu, Jun Zhang, S. H. Song, Khaled B. Letaief

Federated Distillation (FD) is a recently proposed alternative to enable communication-efficient and robust FL, which achieves orders of magnitude reduction of the communication overhead compared with FedAvg and is flexible to handle heterogeneous models at the clients.

Federated Learning Privacy Preserving +1

Task-Oriented Multi-User Semantic Communications

no code implementations19 Dec 2021 Huiqiang Xie, Zhijin Qin, Xiaoming Tao, Khaled B. Letaief

For the single-modal multi-user system, we will propose two Transformer based models, named, DeepSC-IR and DeepSC-MT, to perform image retrieval and machine translation, respectively.

Image Retrieval Machine Translation +5

How global observation works in Federated Learning: Integrating vertical training into Horizontal Federated Learning

no code implementations2 Dec 2021 Shuo Wan, Jiaxun Lu, Pingyi Fan, Yunfeng Shao, Chenghui Peng, Khaled B. Letaief

In this paper, we develop a vertical-horizontal federated learning (VHFL) process, where the global feature is shared with the agents in a procedure similar to that of vertical FL without any extra communication rounds.

Federated Learning

Edge Artificial Intelligence for 6G: Vision, Enabling Technologies, and Applications

no code implementations24 Nov 2021 Khaled B. Letaief, Yuanming Shi, Jianmin Lu, Jianhua Lu

The thriving of artificial intelligence (AI) applications is driving the further evolution of wireless networks.

Learn to Communicate with Neural Calibration: Scalability and Generalization

no code implementations1 Oct 2021 Yifan Ma, Yifei Shen, Xianghao Yu, Jun Zhang, S. H. Song, Khaled B. Letaief

Furthermore, such networks will vary dynamically in a significant way, which makes it intractable to develop comprehensive analytical models.

Computational Efficiency Management

How Powerful is Graph Convolution for Recommendation?

1 code implementation17 Aug 2021 Yifei Shen, Yongji Wu, Yao Zhang, Caihua Shan, Jun Zhang, Khaled B. Letaief, Dongsheng Li

In this paper, we endeavor to obtain a better understanding of GCN-based CF methods via the lens of graph signal processing.

Collaborative Filtering

Neural Calibration for Scalable Beamforming in FDD Massive MIMO with Implicit Channel Estimation

no code implementations3 Aug 2021 Yifan Ma, Yifei Shen, Xianghao Yu, Jun Zhang, S. H. Song, Khaled B. Letaief

Channel estimation and beamforming play critical roles in frequency-division duplexing (FDD) massive multiple-input multiple-output (MIMO) systems.

Over-the-Air Computation via Reconfigurable Intelligent Surface

no code implementations11 May 2021 Wenzhi Fang, Yuning Jiang, Yuanming Shi, Yong Zhou, Wei Chen, Khaled B. Letaief

Over-the-air computation (AirComp) is a disruptive technique for fast wireless data aggregation in Internet of Things (IoT) networks via exploiting the waveform superposition property of multiple-access channels.

Convergence Analysis and System Design for Federated Learning over Wireless Networks

no code implementations30 Apr 2021 Shuo Wan, Jiaxun Lu, Pingyi Fan, Yunfeng Shao, Chenghui Peng, Khaled B. Letaief

Federated learning (FL) has recently emerged as an important and promising learning scheme in IoT, enabling devices to jointly learn a model without sharing their raw data sets.

Federated Learning Scheduling

Communication-Efficient Federated Learning with Dual-Side Low-Rank Compression

no code implementations26 Apr 2021 Zhefeng Qiao, Xianghao Yu, Jun Zhang, Khaled B. Letaief

Federated learning (FL) is a promising and powerful approach for training deep learning models without sharing the raw data of clients.

Federated Learning Low-rank compression

Decentralized Statistical Inference with Unrolled Graph Neural Networks

1 code implementation4 Apr 2021 He Wang, Yifei Shen, Ziyuan Wang, Dongsheng Li, Jun Zhang, Khaled B. Letaief, Jie Lu

In this paper, we investigate the decentralized statistical inference problem, where a network of agents cooperatively recover a (structured) vector from private noisy samples without centralized coordination.

Delay Analysis of Wireless Federated Learning Based on Saddle Point Approximation and Large Deviation Theory

no code implementations31 Mar 2021 Lintao Li, Longwei Yang, Xin Guo, Yuanming Shi, Haiming Wang, Wei Chen, Khaled B. Letaief

Federated learning (FL) is a collaborative machine learning paradigm, which enables deep learning model training over a large volume of decentralized data residing in mobile devices without accessing clients' private data.

Federated Learning

Hierarchical Federated Learning with Quantization: Convergence Analysis and System Design

no code implementations26 Mar 2021 Lumin Liu, Jun Zhang, Shenghui Song, Khaled B. Letaief

Hierarchical FL, with a client-edge-cloud aggregation hierarchy, can effectively leverage both the cloud server's access to many clients' data and the edge servers' closeness to the clients to achieve a high communication efficiency.

Federated Learning Quantization

Federated Multi-Agent Actor-Critic Learning for Age Sensitive Mobile Edge Computing

no code implementations28 Dec 2020 Zheqi Zhu, Shuo Wan, Pingyi Fan, Khaled B. Letaief

To the best of our knowledge, it's the first joint MEC collaboration algorithm that combines the edge federated mode with the multi-agent actor-critic reinforcement learning.

Deep Reinforcement Learning Edge-computing +3

Graph Neural Networks for Scalable Radio Resource Management: Architecture Design and Theoretical Analysis

1 code implementation15 Jul 2020 Yifei Shen, Yuanming Shi, Jun Zhang, Khaled B. Letaief

In this paper, we propose to apply graph neural networks (GNNs) to solve large-scale radio resource management problems, supported by effective neural network architecture design and theoretical analysis.

Computational Efficiency Distributed Optimization +1

Blind Data Detection in Massive MIMO via $\ell_3$-norm Maximization over the Stiefel Manifold

no code implementations26 Apr 2020 Ye Xue, Yifei Shen, Vincent Lau, Jun Zhang, Khaled B. Letaief

Specifically, we propose a novel $\ell_3$-norm-based formulation to recover the data without channel estimation.

Complete Dictionary Learning via $\ell_p$-norm Maximization

1 code implementation24 Feb 2020 Yifei Shen, Ye Xue, Jun Zhang, Khaled B. Letaief, Vincent Lau

Dictionary learning is a classic representation learning method that has been widely applied in signal processing and data analytics.

Computational Efficiency Dictionary Learning +1

Sparse Optimization for Green Edge AI Inference

no code implementations24 Feb 2020 Xiangyu Yang, Sheng Hua, Yuanming Shi, Hao Wang, Jun Zhang, Khaled B. Letaief

By exploiting the inherent connections between the set of task selection and group sparsity structural transmit beamforming vector, we reformulate the optimization as a group sparse beamforming problem.

Combinatorial Optimization Edge-computing

Communication-Efficient Edge AI: Algorithms and Systems

no code implementations22 Feb 2020 Yuanming Shi, Kai Yang, Tao Jiang, Jun Zhang, Khaled B. Letaief

By pushing inference and training processes of AI models to edge nodes, edge AI has emerged as a promising alternative.

Drug Discovery image-classification +1

A Graph Neural Network Approach for Scalable Wireless Power Control

2 code implementations19 Jul 2019 Yifei Shen, Yuanming Shi, Jun Zhang, Khaled B. Letaief

Specifically, a $K$-user interference channel is first modeled as a complete graph, where the quantitative information of wireless channels is incorporated as the features of the graph.

Graph Neural Network

Mobile Edge Intelligence and Computing for the Internet of Vehicles

no code implementations2 Jun 2019 Jun Zhang, Khaled B. Letaief

The Internet of Vehicles (IoV) is an emerging paradigm, driven by recent advancements in vehicular communications and networking.

Networking and Internet Architecture Signal Processing

Client-Edge-Cloud Hierarchical Federated Learning

1 code implementation16 May 2019 Lumin Liu, Jun Zhang, S. H. Song, Khaled B. Letaief

To combine their advantages, we propose a client-edge-cloud hierarchical Federated Learning system, supported with a HierFAVG algorithm that allows multiple edge servers to perform partial model aggregation.

Federated Learning

The Roadmap to 6G -- AI Empowered Wireless Networks

no code implementations26 Apr 2019 Khaled B. Letaief, Wei Chen, Yuanming Shi, Jun Zhang, Ying-Jun Angela Zhang

The recent upsurge of diversified mobile applications, especially those supported by Artificial Intelligence (AI), is spurring heated discussions on the future evolution of wireless communications.

Hybrid Beamforming for Millimeter Wave Systems Using the MMSE Criterion

2 code implementations22 Feb 2019 Tian Lin, Jiaqi Cong, Yu Zhu, Jun Zhang, Khaled B. Letaief

A particular innovation in our proposed alternating minimization algorithms is a carefully designed initialization method, which leads to faster convergence.

Information Theory Information Theory

LORM: Learning to Optimize for Resource Management in Wireless Networks with Few Training Samples

no code implementations18 Dec 2018 Yifei Shen, Yuanming Shi, Jun Zhang, Khaled B. Letaief

To further address the task mismatch problem, we develop a transfer learning method via self-imitation in LORM, named LORM-TL, which can quickly adapt a pre-trained machine learning model to the new task with only a few additional unlabeled training samples.

BIG-bench Machine Learning Imitation Learning +2

Transfer Learning for Mixed-Integer Resource Allocation Problems in Wireless Networks

no code implementations17 Nov 2018 Yifei Shen, Yuanming Shi, Jun Zhang, Khaled B. Letaief

A unique advantage of the proposed method is that it can tackle the task mismatch issue with a few additional unlabeled training samples, which is especially important when transferring to large-size problems.

Transfer Learning

Dynamic Computation Offloading for Mobile-Edge Computing with Energy Harvesting Devices

no code implementations18 May 2016 Yuyi Mao, Jun Zhang, Khaled B. Letaief

Sample simulation results shall be presented to verify the theoretical analysis as well as validate the effectiveness of the proposed algorithm.

Information Theory Information Theory

Cannot find the paper you are looking for? You can Submit a new open access paper.