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The robust beamforming design in multi-functional reconfigurable intelligent surface (MF-RIS) assisted wireless networks is investigated in this work, where the MF-RIS supports signal reflection, refraction, and amplification to address the…

Computational Engineering, Finance, and Science · Computer Science 2024-12-12 Ailing Zheng , Wanli Ni , Wen Wang , Hui Tian , Chau Yuen

Recent years have witnessed the rapid development in the research topic of WiFi sensing that automatically senses human with commercial WiFi devices. This work falls into two major categories, i.e., the activity recognition and the indoor…

Human-Computer Interaction · Computer Science 2019-07-22 Fei Wang , Jianwei Feng , Yinliang Zhao , Xiaobin Zhang , Shiyuan Zhang , Jinsong Han

Recently, researchers have shown that the beamforming feedback angles (BFAs) used for Wi-Fi multiple-input multiple-output (MIMO) operations can be effectively leveraged as a proxy of the channel frequency response (CFR) for different…

Networking and Internet Architecture · Computer Science 2024-08-27 Khandaker Foysal Haque , Francesca Meneghello , Francesco Restuccia

Channel prediction permits to acquire channel state information (CSI) without signaling overhead. However, almost all existing channel prediction methods necessitate the deployment of a dedicated model to accommodate a specific…

Signal Processing · Electrical Eng. & Systems 2025-03-20 Boxun Liu , Shijian Gao , Xuanyu Liu , Xiang Cheng , Liuqing Yang

In order to achieve reliable communication with a high data rate of massive multiple-input multiple-output (MIMO) systems in frequency division duplex (FDD) mode, the estimated channel state information (CSI) at the receiver needs to be fed…

Information Theory · Computer Science 2021-12-14 J. Guo , L. Wang , F. Li , J. Xue

In wireless communication systems, the asynchronization of the oscillators in the transmitter and the receiver along with the Doppler shift due to relative movement may lead to the presence of carrier frequency offset (CFO) in the received…

Signal Processing · Electrical Eng. & Systems 2023-11-29 Tao Chen , Shilian Zheng , Jiawei Zhu , Qi Xuan , Xiaoniu Yang

Recently, FCNs have attracted widespread attention in the CD field. In pursuit of better CD performance, it has become a tendency to design deeper and more complicated FCNs, which inevitably brings about huge numbers of parameters and an…

Computer Vision and Pattern Recognition · Computer Science 2021-08-19 Hongruixuan Chen , Chen Wu , Bo Du

This paper introduces CSI-RFF, a new framework that leverages micro-signals embedded within Channel State Information (CSI) curves to realize Radio-Frequency Fingerprinting of commodity off-the-shelf (COTS) WiFi devices for open-set…

Signal Processing · Electrical Eng. & Systems 2026-02-27 Ruiqi Kong , He Chen

Indoor positioning is an enabling technology for home, office, and industrial network users because it provides numerous information and communication technology (ICT) and Internet of things (IoT) functionalities such as indoor navigation,…

Networking and Internet Architecture · Computer Science 2025-09-05 Katarzyna Kosek-Szott , Szymon Szott , Wojciech Ciezobka , Maksymilian Wojnar , Krzysztof Rusek , Jonathan Segev

Indoor localization becomes a raising demand in our daily lives. Due to the massive deployment in the indoor environment nowadays, WiFi systems have been applied to high accurate localization recently. Although the traditional model based…

Signal Processing · Electrical Eng. & Systems 2019-02-19 Chenlu Xiang , Zhichao Zhang , Shunqing Zhang , Shugong Xu , Shan Cao , Vincent LAU

Semantic segmentation of high-resolution remote sensing images plays a crucial role in land-use monitoring and urban planning. Recent remarkable progress in deep learning-based methods makes it possible to generate satisfactory segmentation…

Image and Video Processing · Electrical Eng. & Systems 2025-04-04 Feng Gao , Miao Fu , Jingchao Cao , Junyu Dong , Qian Du

Given the rapid advancements in wireless communication and terminal devices, high-speed and convenient WiFi has permeated various aspects of people's lives, and attention has been drawn to the location services that WiFi can provide.…

Signal Processing · Electrical Eng. & Systems 2023-07-03 Jiyu Jiao , Xiaojun Wang , Chenlin He

This paper establishes the theoretical limits of channel state information (CSI) feedback in frequency-division duplexing (FDD) multi-antenna orthogonal frequency-division multiplexing (OFDM) systems under finite-length training with…

Information Theory · Computer Science 2026-02-09 Shuao Chen , Junyuan Gao , Yuxuan Shi , Yongpeng Wu , Giuseppe Caire , H. Vincent Poor , Wenjun Zhang

This paper presents a method for continuous indoor-outdoor environment detection on mobile devices based solely on WiFi fingerprints. Detection of indoor outdoor switching is an important part of identifying a user's context, and it…

Signal Processing · Electrical Eng. & Systems 2019-08-05 Guy Shtar , Bracha Shapira , Lior Rokach

Radio frequency (RF) fingerprinting techniques provide a promising supplement to cryptography-based approaches but rely on dedicated equipment to capture in-phase and quadrature (IQ) samples, hindering their wide adoption. Recent advances…

Signal Processing · Electrical Eng. & Systems 2025-10-28 Yong Huang , Wenjing Wang , Dalong Zhang , Junjie Wang , Chen Chen , Yan Cao , Wei Wang

In recent years, deep learning-based image compressive sensing (ICS) methods have achieved brilliant success. Many optimization-inspired networks have been proposed to bring the insights of optimization algorithms into the network structure…

Computer Vision and Pattern Recognition · Computer Science 2022-04-13 Wenjun Chen , Chunling Yang , Xin Yang

Explicit channel state information at the transmitter side is helpful to improve downlink precoding performance for multi-user MIMO systems. In order to reduce feedback signalling overhead, compression of Channel State Information (CSI) is…

Signal Processing · Electrical Eng. & Systems 2021-10-13 Benedikt Groß , Rana Ahmed Salem , Thorsten Wild , Gerhard Wunder

This paper proposes a hybrid beamforming framework for massive multiple-input multiple-output (MIMO) in near-space airship-borne communications. To achieve high energy efficiency (EE) in energy-constraint airships, a dynamic subarray…

Information Theory · Computer Science 2026-02-10 Ruiqi Wang , Zhen Gao , Keke Ying , Ziwei Wan , Symeon Chatzinotas , Mohamed-Slim Alouini

Acoustic beamformers have been widely used to enhance audio signals. The best current methods are DNN-powered variants of the generalized eigenvalue beamformer, and DNN-based filterestimation methods that directly compute beamforming…

Sound · Computer Science 2020-03-03 Yuichiro Koyama , Bhiksha Raj

The increase of available large clinical and experimental datasets has contributed to a substantial amount of important contributions in the area of biomedical image analysis. Image segmentation, which is crucial for any quantitative…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Nikhil Kumar Tomar , Debesh Jha , Michael A. Riegler , Håvard D. Johansen , Dag Johansen , Jens Rittscher , Pål Halvorsen , Sharib Ali
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