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Denoising Diffusion Probabilistic Model (DDPM) is able to make flexible conditional image generation from prior noise to real data, by introducing an independent noise-aware classifier to provide conditional gradient guidance at each time…

Computer Vision and Pattern Recognition · Computer Science 2022-09-21 Shengming Li , Guangcong Zheng , Hui Wang , Taiping Yao , Yang Chen , Shoudong Ding , Xi Li

Radio frequency fingerprint identification (RFFI) is becoming increasingly popular, especially in applications with constrained power, such as the Internet of Things (IoT). Due to subtle manufacturing variations, wireless devices have…

Signal Processing · Electrical Eng. & Systems 2024-10-11 Lu Yang , Seyit Camtepe , Yansong Gao , Vicky Liu , Dhammika Jayalath

Semantic Communication (SC) is an emerging technology that has attracted much attention in the sixth-generation (6G) mobile communication systems. However, few literature has fully considered the perceptual quality of the reconstructed…

Image and Video Processing · Electrical Eng. & Systems 2024-10-04 Kexin Zhang , Lixin Li , Wensheng Lin , Yuna Yan , Wenchi Cheng , Zhu Han

We present NeWRF, a deep learning framework for predicting wireless channels. Wireless channel prediction is a long-standing problem in the wireless community and is a key technology for improving the coverage of wireless network…

Networking and Internet Architecture · Computer Science 2024-06-18 Haofan Lu , Christopher Vattheuer , Baharan Mirzasoleiman , Omid Abari

Diffusion-based foundation models have recently garnered much attention in the field of generative modeling due to their ability to generate images of high quality and fidelity. Although not straightforward, their recent application to the…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Nikos Kostagiolas , Pantelis Georgiades , Yannis Panagakis , Mihalis A. Nicolaou

Semantic knowledge bases are regarded as a promising technology for upcoming 6G communications. However, existing studies mainly focus on source-side semantic modeling while overlooking the structural impact of propagation environments on…

Information Theory · Computer Science 2026-04-08 Xudong Long , Hao Chen , Dan Wang , Chen Qiu , Nan Ma , Xiaodong Xu , Yubin Zhao

Diffusion models have demonstrated remarkable capabilities in generating high-quality samples and enhancing performance across diverse domains through Classifier-Free Guidance (CFG). However, the quality of generated samples is highly…

Computer Vision and Pattern Recognition · Computer Science 2025-08-21 Ao Chen , Lihe Ding , Tianfan Xue

Data-driven methods offer efficient and robust solutions for analyzing complex dynamical systems but rely on the assumption of I.I.D. data, driving the development of generalization techniques for handling environmental differences. These…

Machine Learning · Computer Science 2025-10-23 Shixuan Liu , Yue He , Haotian Wang , Wenjing Yang , Yunfei Wang , Peng Cui , Zhong Liu

Classical and centralized Artificial Intelligence (AI) methods require moving data from producers (sensors, machines) to energy hungry data centers, raising environmental concerns due to computational and communication resource demands,…

Machine Learning · Computer Science 2022-06-30 Stefano Savazzi , Vittorio Rampa , Sanaz Kianoush , Mehdi Bennis

Data-driven deep learning models have enabled tremendous progress in change detection (CD) with the support of pixel-level annotations. However, collecting diverse data and manually annotating them is costly, laborious, and…

Computer Vision and Pattern Recognition · Computer Science 2024-12-23 Qi Zang , Jiayi Yang , Shuang Wang , Dong Zhao , Wenjun Yi , Zhun Zhong

Modern diffusion-based inpainting models pose significant challenges for image forgery localization (IFL), as their full regeneration pipelines reconstruct the entire image via a latent decoder, disrupting the camera-level noise patterns…

Computer Vision and Pattern Recognition · Computer Science 2026-04-15 Paschalis Giakoumoglou , Symeon Papadopoulos

Channel knowledge map (CKM) is an emerging technique to enable environment-aware wireless communications, in which databases with location-specific channel knowledge are used to facilitate or even obviate real-time channel state information…

Information Theory · Computer Science 2021-08-17 Kun Li , Peiming Li , Yong Zeng , Jie Xu

In this work, we propose a novel framework to enable diffusion models to adapt their generation quality based on real-time network bandwidth constraints. Traditional diffusion models produce high-fidelity images by performing a fixed number…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Xi Zhang , Hanwei Zhu , Yan Zhong , Jiamang Wang , Weisi Lin

Training large-scale artificial intelligence (AI) models demands significant computational power and energy, leading to increased carbon footprint with potential environmental repercussions. This paper delves into the challenges of training…

Machine Learning · Computer Science 2024-02-07 Jieming Bian , Lei Wang , Shaolei Ren , Jie Xu

Radio Frequency Fingerprint Identification (RFFI) technology uniquely identifies emitters by analyzing unique distortions in the transmitted signal caused by non-ideal hardware. Recently, RFFI based on deep learning methods has gained…

Signal Processing · Electrical Eng. & Systems 2024-11-07 Ying Zhang , Qiang Li , Hongli Liu , Liu Yang , Jian Yang

Conditional Flow Matching (CFM) models can generate high-quality samples from a non-informative prior, but they can be slow, often needing hundreds of network evaluations (NFE). To address this, we propose Implicit Dynamical Flow Fusion…

Machine Learning · Computer Science 2025-05-28 Mohammad R. Rezaei , Milos R. Popovic , Milad Lankarany , Rahul G. Krishnan

Semantic communication (SemCom) has recently emerged as a promising paradigm for next-generation wireless systems. Empowered by advanced artificial intelligence (AI) technologies, SemCom has achieved significant improvements in transmission…

Information Theory · Computer Science 2026-01-12 Shunpu Tang , Yuanyuan Jia , Qianqian Yang , Ruichen Zhang , Jihong Park , Dusit Niyato

This article proposes generative site-specific beamforming (GenSSBF) for next-generation spatial intelligence in wireless networks. Site-specific beamforming (SSBF) has emerged as a promising paradigm to mitigate the channel acquisition…

Information Theory · Computer Science 2026-01-06 Zhaolin Wang , Zihao Zhou , Cheng-Jie Zhao , Yuanwei Liu

The identification of channel scenarios in wireless systems plays a crucial role in channel modeling, radio fingerprint positioning, and transceiver design. Traditional methods to classify channel scenarios are based on typical statistical…

Machine Learning · Computer Science 2025-06-17 Yuan Li , Zhong Zheng , Chang Liu , Zesong Fei

Diffusion models (DMs) have emerged as powerful generative models for solving inverse problems, offering a good approximation of prior distributions of real-world image data. Typically, diffusion models rely on large-scale clean signals to…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Yifei Wang , Weimin Bai , Weijian Luo , Wenzheng Chen , He Sun