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In the past, NLOS propagation was shown to be a source of distortion for radio-based positioning systems. Every NLOS component was perceived as a perturbation which resulted from the lack of temporal and spatial resolution of previous…

Information Theory · Computer Science 2017-12-06 Rico Mendrzik , Henk Wymeersch , Gerhard Bauch , Zohair Abu-Shaban

Ultra-wideband (UWB) is the state-of-the-art and most popular technology for wireless localization. Nevertheless, precise ranging and localization in non-line-of-sight (NLoS) conditions is still an open research topic. Indeed, multipath…

Machine Learning · Computer Science 2021-05-06 Simone Angarano , Vittorio Mazzia , Francesco Salvetti , Giovanni Fantin , Marcello Chiaberge

The pinching-antenna systems (PASS), which dynamically activate and relocate the pinching-antennas (PAs) along the dielectric waveguide, offer unprecedented potential for integrated positioning and communication. The multi-waveguide-based…

Signal Processing · Electrical Eng. & Systems 2026-05-27 Yaoyu Zhang , Xin Sun , Jun Wang , Tianwei Hou , Anna Li , Yuanwei Liu , Arumugam Nallanathan

5G-based mmWave wireless positioning has emerged as a promising solution for autonomous vehicle (AV) positioning in recent years. Previous studies have highlighted the benefits of fusing a line-of-sight (LoS) 5G positioning solution with an…

Signal Processing · Electrical Eng. & Systems 2023-05-05 Qamar Bader , Sharief Saleh , Mohamed Elhabiby , Aboelmagd Noureldin

Passive reflectors mitigate millimeter-wave (mmwave) link blockages by extending coverage to non-line-ofsight (NLoS) regions. However, their deployment often leads to irregular reflected beam patterns and coverage gaps. This results in…

Systems and Control · Electrical Eng. & Systems 2024-09-04 Omar Ibrahim , Raj Sai Sohel Bandari , Mohammed E. Eltayeb

Near-field (NF) communications is receiving renewed attention in the context of passive reconfigurable intelligent surfaces (RISs) due to their potentially extremely large dimensions. Although line-of-sight (LOS) links are expected to be…

Signal Processing · Electrical Eng. & Systems 2025-08-18 Mohamadreza Delbari , George C. Alexandropoulos , Robert Schober , H. Vincent Poor , Vahid Jamali

The future 5G networks are expected to use millimeter wave (mmWave) frequency bands to take advantage of large unused spectrum. However, due to the high path loss at mmWave frequencies, coverage of mmWave signals can get severely reduced,…

Signal Processing · Electrical Eng. & Systems 2019-05-14 Wahab Khawaja , Ozgur Ozdemir , Yavuz Yapici , Fatih Erden , Martins Ezuma , Ismail Guvenc

Accurate precise positioning at millimeter wave frequencies is possible due to the large available bandwidth that permits precise on-the-fly time of flight measurements using conventional air interface standards. In addition, narrow antenna…

Information Theory · Computer Science 2019-08-27 Ojas Kanhere , Shihao Ju , Yunchou Xing , Theodore S. Rappaport

In future wireless communication systems, millimeter waves (mmWaves) will play an important role in meeting high data rates. However, due to their short wavelengths, these mmWaves present high propagation losses and are highly attenuated by…

Networking and Internet Architecture · Computer Science 2025-01-16 Mbissane Dieng , Gheorghe Zaharia , Ghaïs El Zein , Raphaël Gillard , Renaud Loison

With the growth of location-based services, indoor localization is attracting great interests as it facilitates further ubiquitous environments. Specifically, device free localization using wireless signals is getting increased attention as…

Networking and Internet Architecture · Computer Science 2019-08-21 Tahsina Farah Sanam , Hana Godrich

Non-orthogonal multiple access (NOMA) is a promising technique for optical wireless communication (OWC), enabling multiple users to share the optical spectrum simultaneously through the power domain. However, imperfect channel state…

Systems and Control · Electrical Eng. & Systems 2026-05-05 Ahmed A. Hassan , Ahmad Adnan Qidan , Taisir Elgorashi , Jaafar Elmirghani

Non-line-of-sight (NLOS) sensing has the potential to enable use cases like intrusion detection in occluded areas, increasing the value provided by Integrated Sensing and Commu- nications (ISAC) in future 6G cellular networks. In this…

Signal Processing · Electrical Eng. & Systems 2026-05-04 Paolo Tosi , Maximilian Bauhofer , Marcus Henninger , Laurent Schmalen , Silvio Mandelli

The vast amount of spectrum available for millimeter wave (mmWave) wireless communication systems will support accurate real-time positioning concurrent with communication signaling. This paper demonstrates that accurate estimates of the…

Information Theory · Computer Science 2018-08-23 Ojas Kanhere , Theodore S. Rappaport

The precise and accurate indoor positioning using cellular communication technology remains to be a prerequisite for several industrial applications, including the emergence of a new topic of Integrated Sensing and Communication (ISAC).…

Signal Processing · Electrical Eng. & Systems 2024-09-20 Karthik Muthineni , Alexander Artemenko , Josep Vidal , Montse Nájar

This paper proposes a joint communication and indoor positioning (JCP) system based on visible light communication (VLC) designed for high-precision indoor environments. The framework supports 2D and 3D positioning using received signal…

Signal Processing · Electrical Eng. & Systems 2025-08-07 A. Tarik Leblebici , Sumeyra Hassan , Erdal Panayirci , H. Vincent Poor

Light-fidelity (LiFi) is a networked optical wireless communication (OWC) solution for high-speed indoor connectivity for fixed and mobile optical communications. Unlike conventional radio frequency wireless systems, the OWC channel is not…

Information Theory · Computer Science 2018-10-01 Mohammad Dehghani Soltani , Ardimas Andi Purwita , Zhihong Zeng , Harald Haas , Majid Safari

This work estimates the position and the transmit power of multiple co-channel wireless transmitters under model uncertainties. The model uncertainties include the number of the targets and the parameters of the path-loss model which enable…

Information Theory · Computer Science 2019-03-11 Ehsan Zandi , Rudolf Mathar

Automotive mmWave radar has been widely used in the automotive industry due to its small size, low cost, and complementary advantages to optical sensors (e.g., cameras, LiDAR, etc.) in adverse weathers, e.g., fog, raining, and snowing. On…

Robotics · Computer Science 2022-02-23 Pengen Gao , Shengkai Zhang , Wei Wang , Chris Xiaoxuan Lu

Advancements in high-frequency communication technologies using millimeter waves (mmWave), Tera- Hertz (THz), and optical wireless frequency bands are key for extending wireless connectivity beyond 5G. These technologies offer a broader…

Optimization and Control · Mathematics 2025-07-30 Mohsen Abedi , Alexis A. Dowhuszko , Mehdi Sookhak , Risto Wichman

5G positioning is a very promising area that presents many opportunities and challenges. Many existing techniques rely on multiple anchor nodes and line-of-sight (LOS) paths, or single reference node and single-bounce non-LOS (NLOS) paths.…

Signal Processing · Electrical Eng. & Systems 2023-02-16 Zhixing Li , Fan Jiang , Henk Wymeersch , Fuxi Wen