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Underwater image enhancement is such an important low-level vision task with many applications that numerous algorithms have been proposed in recent years. These algorithms developed upon various assumptions demonstrate successes from…

Computer Vision and Pattern Recognition · Computer Science 2019-03-07 Risheng Liu , Xin Fan , Ming Zhu , Minjun Hou , Zhongxuan Luo

EEG-based seizure detection models face challenges in terms of inference speed and memory efficiency, limiting their real-time implementation in clinical devices. This paper introduces a novel graph-based residual state update mechanism…

Signal Processing · Electrical Eng. & Systems 2024-06-26 Arshia Afzal , Grigorios Chrysos , Volkan Cevher , Mahsa Shoaran

This paper presents an Internet of Things (IoT) application that utilizes an AI classifier for fast-object detection using the frame difference method. This method, with its shorter duration, is the most efficient and suitable for…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Mas Nurul Achmadiah , Afaroj Ahamad , Chi-Chia Sun , Wen-Kai Kuo

-In cognitive radio networks, spectrum sensing aims to detect the unused spectrum channels in order to use the radio spectrum more efficiently. Various methods have been proposed in the past, such as energy, feature detection, and matched…

Information Theory · Computer Science 2016-09-28 Fatima Salahdine , Naima Kaabouch , Hassan El Ghazi

Traditionally source identification is solved using threshold based energy detection algorithms. These algorithms frequently sum up the activity in regions, and consider regions above a specific activity threshold to be sources. While these…

Sound · Computer Science 2022-11-03 Luke Wood , Kevin Anderson , Peter Gerstoft , Richard Bell , Raghab Subbaraman , Dinesh Bharadia

A Reconfigurable Intelligent Surface (RIS) can significantly enhance network positioning and mapping, acting as an additional anchor point in the reference system and improving signal strength and measurement diversity through the…

Information Theory · Computer Science 2024-11-15 Dimitris Kompostiotis , Dimitris Vordonis , Vassilis Paliouras , George C. Alexandropoulos , Florin Grec

In this paper, a novel approach for wireless localization is proposed and experimentally validated that leverages space-time coded reconfigurable intelligent surfaces (RIS). It is demonstrated that applying proper single-bit codes to each…

Systems and Control · Electrical Eng. & Systems 2024-10-29 Mehdi Gholami , Soheil Khajavi , Mohammad Neshat , Simon Tewes , Aydin Sezgin

Reconfigurable Intelligent Surfaces (RISs) promise improved, secure and more efficient wireless communications. We propose and demonstrate how to exploit the diversity offered by RISs to generate and select easily differentiable radio maps…

Signal Processing · Electrical Eng. & Systems 2020-10-08 Cam Ly Nguyen , Orestis Georgiou , Gabriele Gradoni

RIS-aided millimeter wave wireless systems benefit from robustness to blockage and enhanced coverage. In this paper, we study the ability of RIS to also provide enhanced localization capabilities as a by-product of communication. We…

Signal Processing · Electrical Eng. & Systems 2022-03-28 Murat Bayraktar , Joan Palacios , Nuria González-Prelcic , Charlie Jianzhong Zhang

In the past as well as present wireless communication systems, the wireless propagation environment is regarded as an uncontrollable black box that impairs the received signal quality, and its negative impacts are compensated for by relying…

Signal Processing · Electrical Eng. & Systems 2022-09-14 Cunhua Pan , Gui Zhou , Kangda Zhi , Sheng Hong , Tuo Wu , Yijin Pan , Hong Ren , Marco Di Renzo , A. Lee Swindlehurst , Rui Zhang , Angela Yingjun Zhang

The advantage of computational resources in edge computing near the data source has kindled growing interest in delay-sensitive Internet of Things (IoT) applications. However, the benefit of the edge server is limited by the uploading and…

Information Theory · Computer Science 2021-09-17 Mithun Mukherjee , Vikas Kumar , Suman Kumar , Jaime Lloret , Qi Zhang , Mian Guo

Reconfigurable intelligent surfaces (RISs) achieve high passive beamforming gains for signal enhancement or interference nulling by dynamically adjusting their reflection coefficients. Their employment is particularly appealing for…

Information Theory · Computer Science 2022-12-01 Ming-Min Zhao , Kaidi Xu , Yunlong Cai , Yong Niu , Lajos Hanzo

Reconfigurable Intelligent Surfaces (RIS) are an emerging technology that can be used to reconfigure the propagation environment to improve cellular communication link rates. RIS, which are thin metasurfaces composed of discrete elements,…

Signal Processing · Electrical Eng. & Systems 2020-11-11 Pooja Nuti , Brian L. Evans

The advent of edge devices dedicated to machine learning tasks enabled the execution of AI-based applications that efficiently process and classify the data acquired by the resource-constrained devices populating the Internet of Things. The…

Software Engineering · Computer Science 2023-09-04 Alessandro Tundo , Marco Mobilio , Shashikant Ilager , Ivona Brandić , Ezio Bartocci , Leonardo Mariani

Reconfigurable intelligent surfaces (RISs) are widely considered a promising technology for future wireless communication systems. As an important indicator of RIS-assisted communication systems in green wireless communications, energy…

Signal Processing · Electrical Eng. & Systems 2023-10-25 Zhiyi Li , Jida Zhang , Jieao Zhu , Shi Jin , Linglong Dai

This work addresses the problem of secrecy energy efficiency (SEE) maximization in RIS-aided wireless networks. The use of active and nearly-passive RISs are compared and their trade-off in terms of SEE is analyzed. Considering both perfect…

Optimization and Control · Mathematics 2025-07-11 Robert Kuku Fotock , Agbotiname Lucky Imoize , Alessio Zappone , Marco Di Renzo , Roberto Garello

With the rapid development of artificial intelligence, robotics, and Internet of Things, multi-robot systems are progressively acquiring human-like environmental perception and understanding capabilities, empowering them to complete complex…

Robotics · Computer Science 2025-02-17 Wanli Ni , Ruyu Luo , Xinran Zhang , Peng Wang , Wen Wang , Hui Tian

As a widely used localization and sensing technique, radars will play an important role in future wireless networks. However, the wireless channels between the radar and the targets are passively adopted by traditional radars, which limits…

Signal Processing · Electrical Eng. & Systems 2023-03-27 Haobo Zhang , Hongliang Zhang , Boya Di , Kaigui Bian , Zhu Han , Lingyang Song

Reconfigurable intelligent surface (RIS) has great potential to improve the performance of integrated sensing and communication (ISAC) systems, especially in scenarios where line-of-sight paths between the base station and users are…

Information Theory · Computer Science 2024-02-19 Xu Gan , Chongwen Huang , Zhaohui Yang , Caijun Zhong , Xiaoming Chen , Zhaoyang Zhang , Qinghua Guo , Chau Yuen , Merouane Debbah

Due to significant blockage conditions in wireless networks, transmitted signals may considerably degrade before reaching the receiver. The reliability of the transmitted signals, therefore, may be critically problematic due to blockages…

Image and Video Processing · Electrical Eng. & Systems 2022-09-23 Shakil Ahmed , Ibrahim Abdelmawla , Ahmed E. Kamal , Mohamed Y. Selim