Search Results for author: Xiaodong Xu

Found 21 papers, 1 papers with code

SA-FedLora: Adaptive Parameter Allocation for Efficient Federated Learning with LoRA Tuning

no code implementations15 May 2024 Yuning Yang, Xiaohong Liu, Tianrun Gao, Xiaodong Xu, Guangyu Wang

To address this challenge, we propose a Simulated Annealing-based Federated Learning with LoRA tuning (SA-FedLoRA) approach by reducing trainable parameters.

Federated Learning Transfer Learning

WDMoE: Wireless Distributed Large Language Models with Mixture of Experts

no code implementations6 May 2024 Nan Xue, Yaping Sun, Zhiyong Chen, Meixia Tao, Xiaodong Xu, Liang Qian, Shuguang Cui, Ping Zhang

In this paper, we propose a wireless distributed LLMs paradigm based on Mixture of Experts (MoE), named WDMoE, deploying LLMs collaboratively across edge servers of base station (BS) and mobile devices in the wireless communications system.

sDAC -- Semantic Digital Analog Converter for Semantic Communications

no code implementations26 Apr 2024 Zhicheng Bao, Chen Dong, Xiaodong Xu

In fact, quantization methods in traditional communication systems are not appropriate for use in the era of semantic communication as these methods do not consider the semantic information inside symbols.


Semantic Communication-Enabled Wireless Adaptive Panoramic Video Transmission

no code implementations26 Feb 2024 Haixiao Gao, Mengying Sun, Xiaodong Xu, Shujun Han

In this paper, we propose an adaptive panoramic video semantic transmission (APVST) network built on the deep joint source-channel coding (Deep JSCC) structure for the efficient end-to-end transmission of panoramic videos.


Deep Joint Source-Channel Coding for Efficient and Reliable Cross-Technology Communication

no code implementations26 Jan 2024 Shumin Yao, Xiaodong Xu, Hao Chen, Yaping Sun, Qinglin Zhao

Cross-technology communication (CTC) is a promising technique that enables direct communications among incompatible wireless technologies without needing hardware modification.


Codebook-enabled Generative End-to-end Semantic Communication Powered by Transformer

no code implementations22 Jan 2024 PeiGen Ye, Yaping Sun, Shumin Yao, Hao Chen, Xiaodong Xu, Shuguang Cui

Codebook-based generative semantic communication attracts increasing attention, since only indices are required to be transmitted when the codebook is shared between transmitter and receiver.

Image Generation

MOC-RVQ: Multilevel Codebook-assisted Digital Generative Semantic Communication

no code implementations2 Jan 2024 Yingbin Zhou, Yaping Sun, GuanYing Chen, Xiaodong Xu, Hao Chen, Binhong Huang, Shuguang Cui, Ping Zhang

Vector quantization-based image semantic communication systems have successfully boosted transmission efficiency, but face a challenge with conflicting requirements between codebook design and digital constellation modulation.


Semantic Synchronization for Enhanced Reliability in Communication Systems

no code implementations2 Dec 2023 Xiaoyi Liu, Haotai Liang, Chen Dong, Xiaodong Xu

As a new communication paradigm, semantic communication has received widespread attention in communication fields.

Decoder Template Matching

Learning for Semantic Knowledge Base-Guided Online Feature Transmission in Dynamic Channels

no code implementations30 Nov 2023 Xiangyu Gao, Yaping Sun, Dongyu Wei, Xiaodong Xu, Hao Chen, Hao Yin, Shuguang Cui

In this context, we address the problem of efficient remote object recognition by optimizing feature transmission between mobile devices and edge servers.

Autonomous Vehicles Decision Making +2

Decentralized Multi-agent Reinforcement Learning based State-of-Charge Balancing Strategy for Distributed Energy Storage System

no code implementations29 Aug 2023 Zheng Xiong, Biao Luo, Bing-Chuan Wang, Xiaodong Xu, Xiaodong Liu, TingWen Huang

Specifically, the first-order average consensus algorithm is utilized to expand the observations of the DESS state in a fully-decentralized way, and the initial actions (i. e., output power) are decided by the agents (i. e., energy storage units) according to these observations.

counterfactual Multi-agent Reinforcement Learning

Efficient Gaussian Process Classification-based Physical-Layer Authentication with Configurable Fingerprints for 6G-Enabled IoT

no code implementations23 Jul 2023 Rui Meng, Fangzhou Zhu, Xiaodong Xu, Liang Jin, Bizhu Wang, Bingxuan Xu, Han Meng, Ping Zhang

Physical-Layer Authentication (PLA) has been recently believed as an endogenous-secure and energy-efficient technique to recognize IoT terminals.

Active Learning

Latent Semantic Diffusion-based Channel Adaptive De-Noising SemCom for Future 6G Systems

no code implementations19 Apr 2023 Bingxuan Xu, Rui Meng, Yue Chen, Xiaodong Xu, Chen Dong, Hao Sun

Upon the designed DNSC architecture, we further combine adversarial learning, variational autoencoder, and diffusion model to propose the Latent Diffusion DNSC (Latent-Diff DNSC) scheme to realize intelligent online de-noising.


Non-Orthogonal Multiple Access Enhanced Multi-User Semantic Communication

no code implementations12 Mar 2023 Weizhi Li, Haotai Liang, Chen Dong, Xiaodong Xu, Ping Zhang, Kaijun Liu

Semantic communication serves as a novel paradigm and attracts the broad interest of researchers.

A Specific Task-oriented Semantic Image Communication System for substation patrol inspection

no code implementations9 Jan 2023 Senran Fan, Haotai Liang, Chen Dong, Xiaodong Xu, Geng Liu

Inspired by that only some specific details of the image are needed in such substation patrol inspection task, we proposed a new paradigm of semantic enhancement in such specific task to ensure the clarity of key semantic information when facing a lower bit rate or a low signal-to-noise ratio situation.

Image Compression

Graph Neural Networks for Distributed Power Allocation in Wireless Networks: Aggregation Over-the-Air

1 code implementation18 Jul 2022 Yifan Gu, Changyang She, Zhi Quan, Chen Qiu, Xiaodong Xu

In this paper, we aim to design low signaling overhead distributed power allocation schemes by using graph neural networks (GNNs), which are scalable to the number of wireless links.

Graph Embedding

Innovative semantic communication system

no code implementations19 Feb 2022 Chen Dong, Haotai Liang, Xiaodong Xu, Shujun Han, Bizhu Wang, Ping Zhang

In particular, the semantic communication system for image, namely AESC-I, is designed to verify the feasibility of the new paradigm.


Defect-Induced Magnetic Skyrmion in Two-Dimensional Chromium Tri-Iodide Monolayer

no code implementations4 Mar 2021 Ryan A. Beck, Lixin Lu, Peter V. Sushko, Xiaodong Xu, Xiaosong Li

Chromium iodide monolayers, which have different magnetic properties in comparison to the bulk chromium iodide, have been shown to form skyrmionic states in applied electromagnetic fields or in Janus-layer devices.

Computational Physics Materials Science

Competing correlated states and abundant orbital magnetism in twisted monolayer-bilayer graphene

no code implementations11 Jan 2021 Minhao He, Ya-Hui Zhang, Yuhao Li, Zaiyao Fei, Kenji Watanabe, Takashi Taniguchi, Xiaodong Xu, Matthew Yankowitz

Flat band moir\'e superlattices have recently emerged as unique platforms for investigating the interplay between strong electronic correlations, nontrivial band topology, and multiple isospin 'flavor' symmetries.

Strongly Correlated Electrons Mesoscale and Nanoscale Physics Materials Science

Nematic Fluctuations in an Orbital Selective Superconductor Fe$_{1+y}$Te$_{1-x}$Se$_{x}$

no code implementations29 Jun 2020 Qianni Jiang, Yue Shi, Morten H. Christensen, Joshua Sanchez, Bevin Huang, Zhong Lin, Zhaoyu Liu, Paul Malinowski, Xiaodong Xu, Rafael M. Fernandes, Jiun-Haw Chu

Near $x = 0$, in proximity to the double-stripe magnetic order of Fe$_{1+y}$Te, a diverging $B_{1g}$ nematic susceptibility is observed.

Superconductivity Strongly Correlated Electrons

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