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The study identifies a clear evolution from traditional methods to more advanced machine learning approaches. Current algorithms face persistent challenges, including degraded image quality, damaged ridge structures, and background noise,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-20 Amit Kumar Trivedi , Jasvinder Pal Singh

With the development and widespread use of wireless devices in recent years (mobile phones, Internet of Things, Wi-Fi), the electromagnetic spectrum has become extremely crowded. In order to counter security threats posed by rogue or…

Signal Processing · Electrical Eng. & Systems 2017-11-09 K. Youssef , Louis-S. Bouchard , K. Z. Haigh , H. Krovi , J. Silovsky , C. P. Vander Valk

Millimeter-wave (mmWave) massive Multiple Input Multiple Output (MIMO) systems encounter both spatial wideband spreading and temporal wideband effects in the communication channels of individual users. Accurate estimation of a user's…

Signal Processing · Electrical Eng. & Systems 2025-04-22 Chandrashekhar Rai , Debarati Sen

This paper explores the use of ambient radio frequency (RF) signals for human presence detection through deep learning. Using WiFi signal as an example, we demonstrate that the channel state information (CSI) obtained at the receiver…

Machine Learning · Computer Science 2020-12-11 Yang Liu , Tiexing Wang , Yuexin Jiang , Biao Chen

Existing localization methods that intensively leverage the environment-specific received signal strength (RSS) or channel state information (CSI) of wireless signals are rather accurate in certain environments. However, these methods,…

Signal Processing · Electrical Eng. & Systems 2023-08-30 Jun Gao , Dongze Wu , Feng Yin , Qinglei Kong , Lexi Xu , Shuguang Cui

With the ongoing development of Indoor Location-Based Services, the location information of users in indoor environments has been a challenging issue in recent years. Due to the widespread use of WiFi networks, WiFi fingerprinting has…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-06-05 Amin Kargar-Barzi , Ebrahim Farahmand , Nooshin Taheri Chatrudi , Ali Mahani , Muhammad Shafique

Localization of a wireless mobile device or a robot in indoor and GPS-denied environments is a difficult problem, particularly in dynamic scenarios where traditional cameras and LIDAR-based alternative sensing and localization modalities…

Robotics · Computer Science 2022-01-14 Ehsan Latif , Ramviyas Parasuraman

Ultra-wideband (UWB) time difference of arrival (TDOA)-based localization has recently emerged as a promising indoor positioning solution. However, in cluttered environments, both the UWB radio positions and the obstacle-induced…

Robotics · Computer Science 2022-04-12 Wenda Zhao , Abhishek Goudar , Angela P. Schoellig

In this paper we present an efficient computer aided mass classification method in digitized mammograms using Artificial Neural Network (ANN), which performs benign-malignant classification on region of interest (ROI) that contains mass.…

Computer Vision and Pattern Recognition · Computer Science 2010-07-30 Mohammed J. Islam , Majid Ahmadi , Maher A. Sid-Ahmed

Indoor localization is a long-standing challenge in mobile computing, with significant implications for enabling location-aware and intelligent applications within smart environments such as homes, offices, and retail spaces. As AI…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-26 Amod K. Agrawal

Machine leaning (ML) and artificial intelligence (AI) enable new methods for localization and sensing in next-generation networks to fulfill a wide range of use cases. These approaches rely on learning approaches that require large amounts…

Signal Processing · Electrical Eng. & Systems 2023-09-12 Albrecht Michler , Jonas Ninnemann , Jakob Krauthäuser , Paul Schwarzbach , Oliver Michler

The selection of algorithms is a crucial step in designing AI services for real-world time series classification use cases. Traditional methods such as neural architecture search, automated machine learning, combined algorithm selection,…

Machine Learning · Computer Science 2024-10-02 Lars Böcking , Leopold Müller , Niklas Kühl

Indoor positioning systems (IPS) are emerging technologies due to an increasing popularity and demand in location based service (LBS). Because traditional positioning systems such as GPS are limited to outdoor applications, many IPS have…

Signal Processing · Electrical Eng. & Systems 2019-07-08 Erick Schmidt , David Akopian

Location information claimed by devices will play an ever-increasing role in future wireless networks such as 5G, the Internet of Things (IoT). Against this background, the verification of such claimed location information will be an issue…

Signal Processing · Electrical Eng. & Systems 2020-07-08 Ullah Ihsan , Ziqing Wang , Robert Malaney , Andrew Dempster , Shihao Yan

Widespread adoption of indoor positioning systems based on WiFi fingerprinting is at present hindered by the large efforts required for measurements collection during the offline phase. Two approaches were recently proposed to address such…

Networking and Internet Architecture · Computer Science 2019-04-03 Giuseppe Caso , Luca De Nardis , Filip Lemic , Vlado Handziski , Adam Wolisz , Maria-Gabriella Di Benedetto

One of key technologies for future large-scale location-aware services in access is a scalable indoor localization technique. In this paper, we report preliminary results from our investigation on the use of deep neural networks (DNNs) for…

Networking and Internet Architecture · Computer Science 2018-06-26 Kyeong Soo Kim , Ruihao Wang , Zhenghang Zhong , Zikun Tan , Haowei Song , Jaehoon Cha , Sanghyuk Lee

One of the key technologies for future large-scale location-aware services covering a complex of multi-story buildings --- e.g., a big shopping mall and a university campus --- is a scalable indoor localization technique. In this paper, we…

Networking and Internet Architecture · Computer Science 2018-06-26 Kyeong Soo Kim , Sanghyuk Lee , Kaizhu Huang

The accuracy and reliability of vehicle localization on roads are crucial for applications such as self-driving cars, toll systems, and digital tachographs. To achieve accurate positioning, vehicles typically use global navigation satellite…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Lucas Heublein , Nisha L. Raichur , Tobias Feigl , Tobias Brieger , Fin Heuer , Lennart Asbach , Alexander Rügamer , Felix Ott

Deep-learning-based device fingerprinting has recently been recognized as a key enabler for automated network access authentication. Its robustness to impersonation attacks due to the inherent difficulty of replicating physical features is…

Machine Learning · Computer Science 2022-09-01 Bechir Hamdaoui , Abdurrahman Elmaghbub

Indoor localization plays a vital role in the era of the IoT and robotics, with WiFi technology being a prominent choice due to its ubiquity. We present a method for creating WiFi fingerprinting datasets to enhance indoor localization…