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Deep learning-based channel state information (CSI) feedback schemes demonstrate strong compression capabilities but are typically constrained to fixed system configurations, limiting their generalization and flexibility. To address this…

Signal Processing · Electrical Eng. & Systems 2025-08-08 Xuanyu Liu , Shijian Gao , Boxun Liu , Xiang Cheng , Liuqing Yang

Emerging sixth-generation wireless systems are increasingly heterogeneous, with compatibility across diverse configurations, ubiquitous coverage, and expanded functionalities. Although deep learning has substantially benefited wireless…

Signal Processing · Electrical Eng. & Systems 2026-05-05 Boxun Liu , Xuanyu Liu , Shijian Gao , Xuesong Cai , Xiang Cheng , Liuqing Yang

With the growing complexity and dynamics of the mobile communication networks, accurately predicting key system parameters, such as channel state information (CSI), user location, and network traffic, has become essential for a wide range…

Artificial Intelligence · Computer Science 2025-08-06 Yucheng Sheng , Jiacheng Wang , Xingyu Zhou , Le Liang , Hao Ye , Shi Jin , Geoffrey Ye Li

Accurate channel state information (CSI) acquisition is essential for modern wireless systems, which becomes increasingly difficult under large antenna arrays, strict pilot overhead constraints, and diverse deployment environments. Existing…

Information Theory · Computer Science 2026-03-17 Xingyu Zhou , Le Liang , Hao Ye , Jing Zhang , Chao-Kai Wen , Shi Jin

Acquiring accurate channel state information (CSI) is critical for reliable and efficient wireless communication, but challenges such as high pilot overhead and channel aging hinder timely and accurate CSI acquisition. CSI prediction, which…

Signal Processing · Electrical Eng. & Systems 2025-10-14 Mehdi Sattari , Javad Aliakbari , Alexandre Graell i Amat , Tommy Svensson

SiFo, a wireless foundation model-based framework, is proposed for low-overhead site-specific channel state information (CSI) feedback. In 3GPP NR, Type-II feedback provides an expressive codebook-based CSI representation, but it requires…

Signal Processing · Electrical Eng. & Systems 2026-05-18 Cheng-Jie Zhao , Zhaolin Wang , Zongyao Zhao , Yuanwei Liu

Accurate precoding in massive multiple-input multiple-output (MIMO) frequency-division duplexing (FDD) systems relies on efficient channel state information (CSI) acquisition. End-to-end learning frameworks improve performance by jointly…

Signal Processing · Electrical Eng. & Systems 2026-01-15 Weibo Wen , Shijian Gao , Haotian Zhang , Xiang Cheng , Liuqing Yang

Accurate channel state information (CSI) underpins reliable and efficient wireless communication. However, acquiring CSI via pilot estimation incurs substantial overhead, especially in massive multiple-input multiple-output (MIMO) systems…

Information Theory · Computer Science 2025-12-05 Guangming Liang , Mingjie Yang , Dongzhu Liu , Paul Henderson , Lajos Hanzo

While Wi-Fi sensing offers a compelling, privacy-preserving alternative to cameras, its practical utility has been fundamentally undermined by a lack of robustness across domains. Models trained in one setup fail to generalize to new…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Cheng Jiang , Yihe Yan , Yanxiang Wang , Chun Tung Chou , Wen Hu

Self-Supervised Learning (SSL) has emerged as a key technique in machine learning, tackling challenges such as limited labeled data, high annotation costs, and variable wireless channel conditions. It is essential for developing Channel…

Signal Processing · Electrical Eng. & Systems 2026-01-08 Jun Jiang , Xiaolong Ruan , Shugong Xu

Current learning-based wireless methods struggle with generalization due to the fragmented processing of communication and sensing data. WiFo-MiSAC addresses this as a task-agnostic foundation model that tokenizes heterogeneous signals into…

Signal Processing · Electrical Eng. & Systems 2026-04-21 Xuanyu Liu , Shijian Gao , Boxun Liu , Xiang Cheng , Liuqing Yang

Wireless foundation models promise transformative capabilities for channel state information (CSI) processing across diverse 6G network applications, yet face fundamental challenges due to the inherent dual heterogeneity of CSI across both…

Machine Learning · Computer Science 2026-01-27 Chenyu Zhang , Xinchen Lyu , Chenshan Ren , Shuhan Liu , Qimei Cui , Xiaofeng Tao

Wireless channel foundation model (WCFM) is a task-agnostic AI model that is pre-trained to learn a universal channel representation for a wide range of communications and sensing tasks. While existing works on WCFM have demonstrated its…

Signal Processing · Electrical Eng. & Systems 2026-01-09 Yuwei Wang , Li Sun , Tingting Yang , Yuxuan Shi , Maged Elkashlan , Xiao Tang

Obtaining accurate channel state information (CSI) is crucial and challenging for multiple-input multiple-output (MIMO) wireless communication systems. With the increasing antenna scale and user mobility, traditional channel estimation…

Signal Processing · Electrical Eng. & Systems 2025-04-29 Zhuoran Xiao

Channel state information (CSI) is crucial for massive multi-input multi-output (MIMO) system. As the antenna scale increases, acquiring CSI results in significantly higher system overhead. In this letter, we propose a novel channel…

Signal Processing · Electrical Eng. & Systems 2024-08-14 Lianzheng Shi , Jianhua Zhang , Li Yu , Yuxiang Zhang , Zhen Zhang , Yichen Cai , Guangyi Liu

Artificial intelligence (AI) has emerged as a pivotal enabler for next-generation wireless communication systems. However, conventional AI-based models encounter several limitations, such as heavy reliance on labeled data, limited…

Signal Processing · Electrical Eng. & Systems 2025-10-14 Jun Jiang , Yuan Gao , Xinyi Wu , Shugong Xu

Precise modeling of channel multipath is essential for understanding wireless propagation environments and optimizing communication systems. In particular, sixth-generation (6G) artificial intelligence (AI)-native communication systems…

Signal Processing · Electrical Eng. & Systems 2025-11-20 Zengrui Han , Lu Bai , Xuesong Cai , Xiang Cheng

This paper introduces WavesFM, a novel Wireless Foundation Model (WFM) framework, capable of supporting a wide array of communication, sensing, and localization tasks. Our proposed architecture combines a shared Vision Transformer (ViT)…

Signal Processing · Electrical Eng. & Systems 2025-04-22 Ahmed Aboulfotouh , Elsayed Mohammed , Hatem Abou-Zeid

Distributed massive MIMO is considered a key advancement for improving the performance of next-generation wireless telecommunication systems. However, its efficacy in scenarios involving user mobility is limited due to channel aging. To…

Information Theory · Computer Science 2024-10-16 Phillip Stephan , Florian Euchner , Stephan ten Brink

Channel fingerprint (CF) is considered a key enabler for facilitating the acquisition of channel state information (CSI) in massive multiple-input multiple-output (MIMO) communication systems. In this work, we investigate a novel type of CF…

Machine Learning · Computer Science 2026-05-01 Zhenzhou Jin , Li You , Xiang-Gen Xia , Xiqi Gao
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