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Location-aided beam alignment has been proposed recently as a potential approach for fast link establishment in millimeter wave (mmWave) massive MIMO (mMIMO) communications. However, due to mobility and other imperfections in the estimation…

Information Theory · Computer Science 2017-08-29 Flavio Maschietti , David Gesbert , Paul de Kerret , Henk Wymeersch

Traffic signs play a critical role in road safety and traffic management for autonomous driving systems. Accurate traffic sign classification is essential but challenging due to real-world complexities like adversarial examples and…

Computer Vision and Pattern Recognition · Computer Science 2023-10-06 Andreea Postovan , Mădălina Eraşcu

Current object detection frameworks mainly rely on bounding box regression to localize objects. Despite the remarkable progress in recent years, the precision of bounding box regression remains unsatisfactory, hence limiting performance in…

Computer Vision and Pattern Recognition · Computer Science 2020-08-27 Jiaqi Wang , Wenwei Zhang , Yuhang Cao , Kai Chen , Jiangmiao Pang , Tao Gong , Jianping Shi , Chen Change Loy , Dahua Lin

Localization accuracy is of paramount importance for the proper operation of underwater optical wireless sensor networks (UOWSNs). However, underwater localization is prone to hostile environmental impediments such as drifts due to the…

Networking and Internet Architecture · Computer Science 2019-12-24 Nasir Saeed , Abdulkadir Celik , Mohamed-Slim Alouini , Tareq Y. Al-Naffouri

The problem of wireless localization asks to place and orient stations in the plane, each of which broadcasts a unique key within a fixed angular range, so that each point in the plane can determine whether it is inside or outside a given…

Computational Geometry · Computer Science 2007-09-25 Mirela Damian , Robin Flatland , Joseph O'Rourke , Suneeta Ramaswami

This paper addresses the problem of vision-based pedestrian localization, which estimates a pedestrian's location using images and camera parameters. In practice, however, calibrated camera parameters often deviate from the ground truth,…

Computer Vision and Pattern Recognition · Computer Science 2024-10-30 Wanyu Zhang , Jiaqi Zhang , Dongdong Ge , Yu Lin , Huiwen Yang , Huikang Liu , Yinyu Ye

Wireless sensor networks are dynamically formed over the varying topologies. Wireless sensor networks can assist in conducting the rescue operations and can provide search in timely manner. Long time monitoring applications are environment…

Networking and Internet Architecture · Computer Science 2016-08-26 Anubha Parashar , Susheel Kumar , Vinay S Bhaskar , Rajni Chinia

Many modern wireless devices with accurate positioning needs also have access to vision sensors, such as a camera, radar, and Light Detection and Ranging (LiDAR). In scenarios where wireless-based positioning is either inaccurate or…

Computer Vision and Pattern Recognition · Computer Science 2025-02-03 Haozhou Hu , Harpreet S. Dhillon , R. Michael Buehrer

Despite significant algorithmic advances in vision-based positioning, a comprehensive probabilistic framework to study its performance has remained unexplored. The main objective of this paper is to develop such a framework using ideas from…

Information Theory · Computer Science 2024-09-17 Haozhou Hu , Harpreet S. Dhillon , R. Michael Buehrer

This paper considers the problem of downlink localization of user equipment devices (UEs) that are either in the near-field (NF) or in the far-field (FF) of the array of the serving base station (BS). We propose a dual signaling scheme,…

Information Theory · Computer Science 2024-10-24 Georgios Mylonopoulos , Behrooz Makki , Gábor Fodor , Stefano Buzzi

Wireless sensor networks (WSNs) have recently gained a lot of attention by scientific community. Small and inexpensive devices with low energy consumption and limited computing resources are increasingly being adopted in different…

Networking and Internet Architecture · Computer Science 2013-12-17 Asma Mesmoudi , Mohammed Feham , Nabila Labraoui

The problem of sensor network localization (SNL) can be formulated as a semidefinite programming problem with a rank constraint. We propose a new method for solving such SNL problems. We factorize a semidefinite matrix with the rank…

Optimization and Control · Mathematics 2021-06-09 Mitsuhiro Nishijima , Kazuhide Nakata

Many localization algorithms and systems have been developed by means of wireless sensor networks for both indoor and outdoor environments. To achieve higher localization accuracy, extra hardware equipments are utilized by most of the…

Networking and Internet Architecture · Computer Science 2012-01-04 Zhikui Chen , Feng Xia , Tao Huang , Fanyu Bu , Haozhe Wang

Pseudocode is extensively used in introductory programming courses to instruct computer science students in algorithm design, utilizing natural language to define algorithmic behaviors. This learning approach enables students to convert…

Computers and Society · Computer Science 2024-10-30 Zhenyu Xu , Kun Zhang , Victor S. Sheng

Beam alignment enables efficient, stable transmission and control of optical energy and information, which critically depend on precise monitoring and regulation of the three-dimensional (3D) relative positioning between fibers. This study…

Optics · Physics 2025-11-27 Lin Xu , Li Pei , Jianshuai Wang , Zhouyi Hu , Tigang Ning

Aligning beamlines at synchrotron light sources is a high-dimensional, expensive-to-sample optimization problem, as beams are focused using a series of dynamic optical components. Bayesian Optimization is an efficient machine learning…

Accelerator Physics · Physics 2024-08-14 Megha R. Narayanan , Thomas W. Morris

Vision-and-Language Navigation in Continuous Environments (VLN-CE) is one of the most intuitive yet challenging embodied AI tasks. Agents are tasked to navigate towards a target goal by executing a set of low-level actions, following a…

We consider a wireless source localization network in which a target node emits localization signals that are used by anchor nodes to estimate the target node position. In addition to target and anchor nodes, there can also exist…

Information Theory · Computer Science 2021-09-01 Cuneyd Ozturk , Sinan Gezici

Joint communication and sensing allows the utilization of common spectral resources for communication and localization, reducing the cost of deployment. By using fifth generation (5G) New Radio (NR) (i.e., the 3rd Generation Partnership…

Information Theory · Computer Science 2021-03-08 O. Kanhere , S. Goyal , M. Beluri , T. S. Rappaport

Accurate location information is essential for many wireless sensor network (WSN) applications. A location-aware WSN generally includes two types of nodes: sensors whose locations to be determined and anchors whose locations are known a…

Networking and Internet Architecture · Computer Science 2014-03-17 Liang Heng , Grace Xingxin Gao
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