no code implementations • 18 Dec 2024 • Achintha Wijesinghe, Suchinthaka Wanninayaka, Weiwei Wang, Yu-Chieh Chao, Songyang Zhang, Zhi Ding
The recent rise of semantic-style communications includes the development of goal-oriented communications (GOCOMs) remarkably efficient multimedia information transmissions.
no code implementations • 9 Dec 2024 • Suchinthaka Wanninayaka, Achintha Wijesinghe, Weiwei Wang, Yu-Chieh Chao, Songyang Zhang, Zhi Ding
The rapid expansion of edge devices and Internet-of-Things (IoT) continues to heighten the demand for data transport under limited spectrum resources.
no code implementations • 31 May 2024 • Yu-Chien Lin, Yan Xin, Ta-Sung Lee, Charlie, Zhang, Yibo Ma, Zhi Ding
Acquiring downlink channel state information (CSI) is crucial for optimizing performance in massive Multiple Input Multiple Output (MIMO) systems operating under Frequency-Division Duplexing (FDD).
no code implementations • 24 May 2024 • Kaidi Wang, Zhiguo Ding, Daniel K. C. So, Zhi Ding
To further improve learning performance by increasing device participation under the maximum time consumption constraint, we formulate an energy consumption minimization problem by including resource allocation and sub-channel assignment.
no code implementations • 4 May 2024 • Yueling Zhou, Achintha Wijesinghe, Yibo Ma, Songyang Zhang, Zhi Ding
To characterize radio frequency (RF) signal power distribution in wireless communication systems, the radiomap is a useful tool for resource allocation and network management.
no code implementations • 12 Mar 2024 • Yu-Chien Lin, Yan Xin, Ta-Sung Lee, Charlie, Zhang, Zhi Ding
Acquiring downlink channel state information (CSI) at the base station is vital for optimizing performance in massive Multiple input multiple output (MIMO) Frequency-Division Duplexing (FDD) systems.
no code implementations • 15 Feb 2024 • Wenhao Zhuang, Yuyi Mao, Hengtao He, Lei Xie, Shenghui Song, Yao Ge, Zhi Ding
Orthogonal time frequency space (OTFS) modulation has emerged as a promising solution to support high-mobility wireless communications, for which, cost-effective data detectors are critical.
no code implementations • 13 Nov 2023 • Achintha Wijesinghe, Songyang Zhang, Suchinthaka Wanninayaka, Weiwei Wang, Zhi Ding
This work presents an ultra-efficient communication design by utilizing generative AI-based on diffusion models as a specific example of the general goal-oriented communication framework.
no code implementations • 30 Oct 2023 • Siyu Qi, Achintha Wijesinghe, Lahiru D. Chamain, Zhi Ding
Our goal is to optimize DL models such that the encoder latent requires low channel bandwidth while still delivers feature information for high classification accuracy.
no code implementations • 23 Sep 2023 • Shusen Jing, Songyang Zhang, Zhi Ding
Robust header compression (ROHC), critically positioned between the network and the MAC layers, plays an important role in modern wireless communication systems for improving data efficiency.
no code implementations • 23 Aug 2023 • Achintha Wijesinghe, Songyang Zhang, Zhi Ding
Recent advances of generative learning models are accompanied by the growing interest in federated learning (FL) based on generative adversarial network (GAN) models.
Generative Adversarial Network
Personalized Federated Learning
no code implementations • 10 Aug 2023 • Achintha Wijesinghe, Songyang Zhang, Siyu Qi, Zhi Ding
To satisfy the broad applications and insatiable hunger for deploying low latency multimedia data classification and data privacy in a cloud-based setting, federated learning (FL) has emerged as an important learning paradigm.
no code implementations • 10 Aug 2023 • Siyu Qi, Lahiru D. Chamain, Zhi Ding
Among major deep learning (DL) applications, distributed learning involving image classification require effective image compression codecs deployed on low-cost sensing devices for efficient transmission and storage.
no code implementations • 24 May 2023 • Songyang Zhang, Tianhang Yu, Brian Choi, Feng Ouyang, Zhi Ding
Providing rich and useful information regarding spectrum activities and propagation channels, radiomaps characterize the detailed distribution of power spectral density (PSD) and are important tools for network planning in modern wireless systems.
no code implementations • 19 May 2023 • Achintha Wijesinghe, Songyang Zhang, Zhi Ding
Our analysis demonstrates the convergence and privacy benefits of the proposed PS-FEdGAN framework.
no code implementations • 15 Mar 2023 • Yao Ge, Lei Liu, Shunqi Huang, David González G., Yong Liang Guan, Zhi Ding
Efficient signal detectors are rather important yet challenging to achieve satisfactory performance for large-scale communication systems.
no code implementations • 17 Feb 2023 • Yao Ge, Qinwen Deng, David González G., Yong Liang Guan, Zhi Ding
This paper investigates an uplink coordinated multi-point (CoMP) coverage scenario, in which multiple mobile users are grouped for sparse code multiple access (SCMA), and served by the remote radio head (RRH) in front of them and the RRH behind them simultaneously.
1 code implementation • 24 Dec 2022 • Songyang Zhang, Achintha Wijesinghe, Zhi Ding
A practical goal is to estimate fine-resolution radio maps from sparse radio strength measurements.
no code implementations • 14 Sep 2022 • Kaidi Wang, Yi Ma, Mahdi Boloursaz Mashhadi, Chuan Heng Foh, Rahim Tafazolli, Zhi Ding
At the leader-level, we derive an upper bound of convergence rate and subsequently reformulate the global loss minimization problem and propose a new age-of-update (AoU) based device selection algorithm.
no code implementations • 10 Sep 2022 • Songyang Zhang, Tianhang Yu, Jonathan Tivald, Brian Choi, Feng Ouyang, Zhi Ding
Radio map describes network coverage and is a practically important tool for network planning in modern wireless systems.
no code implementations • 8 May 2022 • Haoming Ma, Xiaojun Yuan, Zhi Ding, Dian Fan, Jun Fang
To achieve communication-efficient federated multitask learning (FMTL), we propose an over-the-air FMTL (OAFMTL) framework, where multiple learning tasks deployed on edge devices share a non-orthogonal fading channel under the coordination of an edge server (ES).
no code implementations • 20 Apr 2022 • Yu-Chien Lin, Ta-Sung Lee, Zhi Ding
Channel state information (CSI) at transmitter is crucial for massive MIMO downlink systems to achieve high spectrum and energy efficiency.
no code implementations • 29 Nov 2021 • Songyang Zhang, Qinwen Deng, Zhi Ding
One important task of hyperspectral image (HSI) processing is the extraction of spectral-spatial features.
1 code implementation • 31 Aug 2021 • Songyang Zhang, Qinwen Deng, Zhi Ding
To generalize traditional graph signal processing (GSP) over multilayer graphs for analyzing multi-level signal features and their interactions, this work proposes a tensor-based framework of multilayer graph signal processing (M-GSP).
no code implementations • 31 Aug 2021 • Songyang Zhang, Qinwen Deng, Zhi Ding
Graph signal processing (GSP) has become an important tool in image processing because of its ability to reveal underlying data structures.
no code implementations • 27 Jun 2021 • Haoming Ma, Xiaojun Yuan, Dian Fan, Zhi Ding, Xin Wang, Jun Fang
In this letter, we introduce over-the-air computation into the communication design of federated multi-task learning (FMTL), and propose an over-the-air federated multi-task learning (OA-FMTL) framework, where multiple learning tasks deployed on edge devices share a non-orthogonal fading channel under the coordination of an edge server (ES).
no code implementations • 24 Mar 2021 • Hui-Ying Siao, Siyu Qi, Zhi Ding, Chia-Yu Lin, Yu-Chiang Hsieh, Tse-Ming Chen
The MLA-GDCC includes a white balance (WB) to correct the color imbalance on the images, a modified U-Net and a support vector machine (SVM) to segment the graphene flakes.
no code implementations • 11 Mar 2021 • Qinwen Deng, Songyang Zhang, Zhi Ding
Efficient processing and feature extraction of largescale point clouds are important in related computer vision and cyber-physical systems.
no code implementations • 12 Feb 2021 • Qinwen Deng, Songyang Zhang, Zhi Ding
By directly estimating hypergraph spectrum based on hypergraph stationary processing, we design a spectral kernel-based filter to capture high-dimensional interactions among point signal nodes and to better preserve object surface outlines.
1 code implementation • 5 Jan 2021 • Qiyu Hu, Yanzhen Liu, Yunlong Cai, Guanding Yu, Zhi Ding
In this work, we investigate the joint design of beam selection and digital precoding matrices for mmWave MU-MIMO systems with DLA to maximize the sum-rate subject to the transmit power constraint and the constraints of the selection matrix structure.
no code implementations • 20 Sep 2020 • Zhenyu Liu, Mason del Rosario, Zhi Ding
Forward channel state information (CSI) often plays a vital role in scheduling and capacity-approaching transmission optimization for massive multiple-input multiple-output (MIMO) communication systems.
no code implementations • 1 Jul 2020 • Songyang Zhang, Han Zhang, Shuguang Cui, Zhi Ding
Graph convolutional networks (GCN) have been recently utilized to extract the underlying structures of datasets with some labeled data and high-dimensional features.
1 code implementation • 15 Jun 2020 • Qiyu Hu, Yunlong Cai, Qingjiang Shi, Kaidi Xu, Guanding Yu, Zhi Ding
Then, we implement the proposed deepunfolding framework to solve the sum-rate maximization problem for precoding design in MU-MIMO systems.
no code implementations • 21 Jan 2020 • Songyang Zhang, Shuguang Cui, Zhi Ding
Hypergraph spectral analysis has emerged as an effective tool processing complex data structures in data analysis.
no code implementations • 8 Jan 2020 • Songyang Zhang, Shuguang Cui, Zhi Ding
Along with increasingly popular virtual reality applications, the three-dimensional (3D) point cloud has become a fundamental data structure to characterize 3D objects and surroundings.
no code implementations • 4 Sep 2019 • Lahiru D. Chamain, Zhi Ding
Furthermore, we show that traditional augmentation transforms such as flipping/shifting are ineffective in the DWT domain and present different augmentation transformations to achieve more accurate classification without any additional cost.
no code implementations • 29 Jul 2019 • Kai Yang, Yuanming Shi, Wei Yu, Zhi Ding
Edge machine learning can deliver low-latency and private artificial intelligent (AI) services for mobile devices by leveraging computation and storage resources at the network edge.
no code implementations • 22 Jul 2019 • Songyang Zhang, Zhi Ding, Shuguang Cui
Signal processing over graphs has recently attracted significant attentions for dealing with structured data.
no code implementations • 31 Dec 2018 • Kai Yang, Tao Jiang, Yuanming Shi, Zhi Ding
Instead, edge machine learning becomes increasingly attractive for performing training and inference directly at network edges without sending data to a centralized data center.
no code implementations • 12 Nov 2018 • Jialin Dong, Yuanming Shi, Zhi Ding
Over-the-air computation (AirComp) shows great promise to support fast data fusion in Internet-of-Things (IoT) networks.