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This paper proposes a spectrum-efficient nonorthogonal affine frequency division multiplexing (AFDM) waveform for reliable high-mobility communications in the upcoming sixth-generation (6G) mobile systems. Our core idea is to introduce a…

Signal Processing · Electrical Eng. & Systems 2025-07-24 Yu Zhang , Qin Yi , Leila Musavian , Tongyang Xu , Zilong Liu

Hybrid beamformer design plays very crucial role in the next generation millimeter-wave (mm-Wave) massive MIMO (multiple-input multiple-output) systems. Previous works assume the perfect channel state information (CSI) which results heavy…

Signal Processing · Electrical Eng. & Systems 2020-08-18 Ahmet M. Elbir

Recently Data-Free Knowledge Distillation (DFKD) has garnered attention and can transfer knowledge from a teacher neural network to a student neural network without requiring any access to training data. Although diffusion models are adept…

Computer Vision and Pattern Recognition · Computer Science 2025-04-02 Xiaohua Qi , Renda Li , Long Peng , Qiang Ling , Jun Yu , Ziyi Chen , Peng Chang , Mei Han , Jing Xiao

Recent diffusion and flow matching models have demonstrated strong capabilities in image generation and editing by progressively removing noise through iterative sampling. While this enables flexible inversion for semantic-preserving edits,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-27 Yasong Dai , Zeeshan Hayder , David Ahmedt-Aristizabal , Hongdong Li

In the future sixth-generation (6G) era, to support accurate localization sensing and efficient communication link establishment for intelligent agents, a comprehensive understanding of the surrounding environment and proper channel…

Signal Processing · Electrical Eng. & Systems 2024-11-07 Lu Bai , Ziwei Huang , Mingran Sun , Xiang Cheng , Lizhen Cui

Hybrid analog and digital beamforming transceivers are instrumental in addressing the challenge of expensive hardware and high training overheads in the next generation millimeter-wave (mm-Wave) massive MIMO (multiple-input multiple-output)…

Signal Processing · Electrical Eng. & Systems 2022-01-04 Ahmet M. Elbir , Kumar Vijay Mishra , M. R. Bhavani Shankar , Björn Ottersten

Online high-definition (HD) map construction is an important and challenging task in autonomous driving. Recently, there has been a growing interest in cost-effective multi-view camera-based methods without relying on other sensors like…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Xiaoshuai Hao , Ruikai Li , Hui Zhang , Dingzhe Li , Rong Yin , Sangil Jung , Seung-In Park , ByungIn Yoo , Haimei Zhao , Jing Zhang

Deep joint source-channel coding (JSCC) has emerged as a promising paradigm for semantic communication, delivering significant performance gains over conventional separate coding schemes. However, existing JSCC frameworks remain vulnerable…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Changyuan Zhao , Jiacheng Wang , Ruichen Zhang , Dusit Niyato , Hongyang Du , Zehui Xiong , Dong In Kim , Ping Zhang

The development of edge computing places critical demands on energy-efficient model deployment for multiple-input multiple-output (MIMO) detection tasks. Deploying deep unfolding models such as PGD-Nets and ADMM-Nets into…

Machine Learning · Computer Science 2025-05-20 Zeyi Ren , Jingreng Lei , Yichen Jin , Ermo Hua , Qingfeng Lin , Chen Zhang , Bowen Zhou , Yik-Chung Wu

We introduce Diffusion Active Learning, a novel approach that combines generative diffusion modeling with data-driven sequential experimental design to adaptively acquire data for inverse problems. Although broadly applicable, we focus on…

Machine Learning · Computer Science 2025-04-07 Luis Barba , Johannes Kirschner , Tomas Aidukas , Manuel Guizar-Sicairos , Benjamín Béjar

Deep learning models for channel estimation in Orthogonal Frequency Division Multiplexing (OFDM) systems often suffer from performance degradation under fast-fading channels and low-SNR scenarios. To address these limitations, we introduce…

Machine Learning · Computer Science 2025-05-15 Berkay Guler , Hamid Jafarkhani

We provide a general framework for learning diffusion bridges that transport prior to target distributions. It includes existing diffusion models for generative modeling, but also underdamped versions with degenerate diffusion matrices,…

Machine Learning · Computer Science 2025-08-14 Denis Blessing , Julius Berner , Lorenz Richter , Gerhard Neumann

In this paper, we propose a novel knowledge transfer framework that introduces continuous normalizing flows for progressive knowledge transformation and leverages multi-step sampling strategies to achieve precision knowledge transfer. We…

Computer Vision and Pattern Recognition · Computer Science 2024-02-06 Shitong Shao , Zhiqiang Shen , Linrui Gong , Huanran Chen , Xu Dai

Knowledge Distillation (KD) based methods adopt the one-way Knowledge Transfer (KT) scheme in which training a lower-capacity student network is guided by a pre-trained high-capacity teacher network. Recently, Deep Mutual Learning (DML)…

Computer Vision and Pattern Recognition · Computer Science 2020-08-19 Anbang Yao , Dawei Sun

Accurate dose distribution prediction is crucial in the radiotherapy planning. Although previous methods based on convolutional neural network have shown promising performance, they have the problem of over-smoothing, leading to prediction…

Image and Video Processing · Electrical Eng. & Systems 2024-10-31 Xin Liao , Zhenghao Feng , Jianghong Xiao , Xingchen Peng , Yan Wang

Unsupervised anomaly detection encompasses diverse applications in industrial settings where a high-throughput and precision is imperative. Early works were centered around one-class-one-model paradigm, which poses significant challenges in…

Computer Vision and Pattern Recognition · Computer Science 2024-05-13 Sushovan Jena , Vishwas Saini , Ujjwal Shaw , Pavitra Jain , Abhay Singh Raihal , Anoushka Banerjee , Sharad Joshi , Ananth Ganesh , Arnav Bhavsar

Channel-gain maps provide the channel gain between any two locations in a geographical region. They find numerous applications, from resource allocation and interference control to path planning for autonomous vehicles. Channel-gain map…

Signal Processing · Electrical Eng. & Systems 2026-05-12 Prasenjit Dhara , Daniel Romero

Diffusion Transformers rely on static patchify tokenization, assigning the same token budget to smooth backgrounds, detailed object regions, noisy early timesteps, and late-stage refinements. We introduce the Dynamic Chunking Diffusion…

Computer Vision and Pattern Recognition · Computer Science 2026-05-08 Akash Haridas , Utkarsh Saxena , Parsa Ashrafi Fashi , Mehdi Rezagholizadeh , Vikram Appia , Emad Barsoum

Brain network analysis has emerged as pivotal method for gaining a deeper understanding of brain functions and disease mechanisms. Despite the existence of various network construction approaches, shortcomings persist in the learning of…

Computer Vision and Pattern Recognition · Computer Science 2023-11-10 Yongcheng Zong , Shuqiang Wang

Strong generative models can accurately learn channel distributions. This could save recurring costs for physical measurements of the channel. Moreover, the resulting differentiable channel model supports training neural encoders by…

Information Theory · Computer Science 2024-06-12 Muah Kim , Rick Fritschek , Rafael F. Schaefer