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High-precision positioning accuracy is among the key features of the future fifth-generation (5G-advanced) cellular networks to enable a wide variety of commercial, critical, and consumer use cases. 5G new radio (NR) systems have relied on…

Signal Processing · Electrical Eng. & Systems 2022-07-15 Abdurrahman Fouda , Ryan Keating , Hyun-Su Cha

We propose a method for predicting the location of user equipment (UE) using wireless fingerprints in dynamic indoor non-line-of-sight (NLoS) environments. In particular, our method copes with the challenges posed by the drift, birth, and…

Signal Processing · Electrical Eng. & Systems 2024-08-28 Rafail Ismayilov , Renato L. G. Cavalcante , Slawomir Stanczak

5G New Radio (NR) is a key enabler of accurate positioning in smart cities and smart factories. This paper presents the experimental results from three 5G positioning testbeds running open-source OpenAirInterface (OAI) gNB and Core Network…

Networking and Internet Architecture · Computer Science 2025-08-28 Mohsen Ahadi , Adeel Malik , Omid Esrafilian , Florian Kaltenberger , Cedric Thienot

Ensuring smooth mobility management while employing directional beamformed transmissions in 5G millimeter-wave networks calls for robust and accurate user equipment (UE) localization and tracking. In this article, we develop neural…

Signal Processing · Electrical Eng. & Systems 2024-06-25 Roman Klus , Jukka Talvitie , Julia Vinogradova , Gabor Fodor , Johan Torsner , Mikko Valkama

Cellular networks offer a unique opportunity to enable device-free and wide-area health monitoring by exploiting the sensitivity of radio-frequency (RF) propagation to human physiological activities. In this paper, we present the first…

Networking and Internet Architecture · Computer Science 2026-03-04 Ruxin Lin , Peihao Yan , Jie Lu , Qijun Wang , Huacheng Zeng

With vast mmWave spectrum and narrow beam antenna technology, precise position location is now possible in 5G and future mobile communication systems. In this article, we describe how centimeterlevel localization accuracy can be achieved,…

Information Theory · Computer Science 2021-02-25 Ojas Kanhere , Theodore S. Rappaport

We demonstrate a distributed and a centralized 4G/5G compliant approach to minimize signaling and latency related to user mobility in cellular networks. This is crucial due to the densification of networks and the additional signaling…

Networking and Internet Architecture · Computer Science 2022-01-05 Merim Dzaferagic , Nicola Marchetti , Irene Macaluso

Reconfigurable Intelligent Surfaces (RISs) comprised of tunable unit elements have been recently considered in indoor communication environments for focusing signal reflections to intended user locations. However, the current proofs of…

Information Theory · Computer Science 2019-05-21 Chongwen Huang , George C. Alexandropoulos , Chau Yuen , Mérouane Debbah

User localization and tracking in the upcoming generation of wireless networks have the potential to be revolutionized by technologies such as the Dynamic Metasurface Antennas (DMAs). Commonly proposed algorithmic approaches rely on…

Signal Processing · Electrical Eng. & Systems 2023-10-31 Kyriakos Stylianopoulos , Murat Bayraktar , Nuria González Prelcic , George C. Alexandropoulos

This paper considers the localization problem in a 5G-aided global navigation satellite system (GNSS) based on real-time kinematic (RTK) technique. Specifically, the user's position is estimated based on the hybrid measurements, including…

Signal Processing · Electrical Eng. & Systems 2023-03-24 Pinjun Zheng , Xing Liu , Tarig Ballal , Tareq Y. Al-Naffouri

New radio (NR) positioning in the Third Generation Partnership Project (3GPP) Release 18 (Rel-18) enables 5G-advanced networks to achieve ultra-high accuracy positioning without dependence on global navigation satellite systems (GNSS) with…

Information Theory · Computer Science 2024-02-01 Hyun-Su Cha , Gilsoo Lee , Amitava Ghosh , Matthew Baker , Sean Kelley , Juergen Hofmann

Fifth generation~(5G) networks providing much higher bandwidth and faster data rates will allow connecting vast number of static and mobile devices, sensors, agents, users, machines, and vehicles, supporting Internet-of-Things (IoT),…

Systems and Control · Computer Science 2018-02-14 Sam Safavi , Usman A. Khan , Soummya Kar , José M. F. Moura

The widespread adoption of the fifth generation (5G) of cellular networks has brought new opportunities for the development of localization-based services. High-accuracy positioning use cases and functionalities defined by the standards are…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Lorenzo Italiano , Bernardo Camajori Tedeschini , Mattia Brambilla , Huiping Huang , Monica Nicoli , Henk Wymeersch

Positioning problem can be solved with several approaches in 5G. This paper introduces RT (Ray Tracing) technique for small-cell Outdoor positioning and tracking for systems with distributed architecture with multipath processing gain.…

Signal Processing · Electrical Eng. & Systems 2023-05-19 Vladislav Ryzhov

5G is designed to be an essential enabler and a leading infrastructure provider in the communication technology industry by supporting the demand for the growing data traffic and a variety of services with distinct requirements. The use of…

Computer Vision and Pattern Recognition · Computer Science 2020-12-16 Vinicius M. de Pinho , Marcello L. R. de Campos , Luis Uzeda Garcia , Dalia Popescu

This paper presents an end-to-end deep learning framework for electromagnetically reconfigurable antenna (ERA)-aided user localization with active sensing, where ERAs provide additional electromagnetic reconfigurability to diversify the…

Signal Processing · Electrical Eng. & Systems 2026-01-30 Ruizhi Zhang , Yuchen Zhang , Ying Zhang

Wi-Fi fingerprinting remains one of the most practical solutions for indoor positioning, however, its performance is often limited by the size and heterogeneity of fingerprint datasets, strong Received Signal Strength Indicator variability,…

Machine Learning · Computer Science 2026-01-12 Miguel Matey-Sanz , Joaquín Torres-Sospedra , Joaquín Huerta , Sergio Trilles

Providing high-capacity radio connectivity for high-speed trains (HSTs) is one of the most important use cases of emerging 5G New Radio (NR) networks. In this article, we show that 5G NR technology can also facilitate high-accuracy…

Networking and Internet Architecture · Computer Science 2019-05-07 Jukka Talvitie , Toni Levanen , Mike Koivisto , Tero Ihalainen , Kari Pajukoski , Mikko Valkama

The upcoming fifth generation (5G) New Radio (NR) interface inherits many concepts and techniques from 4G systems such as the Orthogonal Frequency Division Multiplex (OFDM) based waveform and multiple access. Dimensioning 5G NR interface…

Networking and Internet Architecture · Computer Science 2019-10-01 Ridha Nasri , Jalal Rachad , Laurent Decreusefond

In this article, we present an intelligent framework for 5G new radio (NR) indoor positioning under a monostatic configuration. The primary objective is to estimate both the angle of arrival and time of arrival simultaneously. This requires…

Signal Processing · Electrical Eng. & Systems 2024-12-12 Shengheng Liu , Hao Wang , Mengguan Pan , Peng Liu , Yahui Ma , Yongming Huang