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138 Results Found

  • Article
  • Open Access
1 Citations
1,151 Views
12 Pages

13 May 2025

Indoor low-power positioning systems have received much attention, and visible light positioning (VLP) shows great potential for its high accuracy and low power consumption. However, VLP also exhibits some limitations like small coverage area and the...

  • Article
  • Open Access
9 Citations
3,764 Views
21 Pages

A Sensor Fusion Based Nonholonomic Wheeled Mobile Robot for Tracking Control

  • Shun-Hung Tsai,
  • Li-Hsiang Kao,
  • Hung-Yi Lin,
  • Ta-Chun Lin,
  • Yu-Lin Song and
  • Luh-Maan Chang

9 December 2020

In this paper, a detail design procedure of the real-time trajectory tracking for the nonholonomic wheeled mobile robot (NWMR) is proposed. A 9-axis micro electro-mechanical systems (MEMS) inertial measurement unit (IMU) sensor is used to measure the...

  • Data Descriptor
  • Open Access
16 Citations
6,947 Views
13 Pages

17 February 2020

This is a data descriptor paper for a set of raw GNSS signals collected via roof antennas and Spectracom simulator for general-purpose uses. We give one example of possible data use in the context of Radio Frequency Fingerprinting (RFF) studies for s...

  • Article
  • Open Access
13 Citations
4,188 Views
17 Pages

A Hybrid VLC-RF Portable Phasor Measurement Unit for Deep Tunnels

  • Ismael Soto,
  • Rafael Nilson Rodrigues,
  • Gabriel Massuyama,
  • Fabian Seguel,
  • Pablo Palacios Játiva,
  • Cesar A. Azurdia-Meza and
  • Nicolas Krommenacker

31 January 2020

In this manuscript we propose a hybrid Visible Light Communication and Radio Frequency (VLC-RF) scheme for the implementation of a portable Phaser Measurement Unit (PMU) for deep underground tunnels. Through computer simulations and laboratory measur...

  • Article
  • Open Access
20 Citations
4,732 Views
20 Pages

24 May 2020

Radio frequency communication technology has not only greatly improved public network service, but also developed a new technological route for indoor navigation service. However, there is a gap between the precision and accuracy of indoor navigation...

  • Article
  • Open Access
6 Citations
2,015 Views
15 Pages

Modulated Radio Frequency Stealth Waveforms for Ultra-Wideband Radio Fuzes

  • Kaiwei Wu,
  • Bing Yang,
  • Shijun Hao,
  • Yanbin Liang and
  • Zhonghua Huang

17 July 2024

The increasingly complex electromagnetic environment of modern warfare and the proliferation of intelligent jamming threaten to reduce the survival rate of radio fuzes on the battlefield. Radio frequency (RF) stealth technology can fundamentally impr...

  • Article
  • Open Access
109 Citations
10,715 Views
20 Pages

Experimental Evaluation of UWB Indoor Positioning for Sport Postures

  • Matteo Ridolfi,
  • Stef Vandermeeren,
  • Jense Defraye,
  • Heidi Steendam,
  • Joeri Gerlo,
  • Dirk De Clercq,
  • Jeroen Hoebeke and
  • Eli De Poorter

9 January 2018

Radio frequency (RF)-based indoor positioning systems (IPSs) use wireless technologies (including Wi-Fi, Zigbee, Bluetooth, and ultra-wide band (UWB)) to estimate the location of persons in areas where no Global Positioning System (GPS) reception is...

  • Article
  • Open Access
2,091 Views
13 Pages

Study on Optical Positioning Using Experimental Visible Light Communication System

  • Nikoleta Vitsi,
  • Argyris N. Stassinakis,
  • Nikolaos A. Androutsos,
  • George D. Roumelas,
  • George K. Varotsos,
  • Konstantinos Aidinis and
  • Hector E. Nistazakis

Visible light positioning systems (VLP) have attracted significant commercial and research interest because of the many advantages they possess over other applications such as radio frequency (RF) positioning systems. In this work, an experimental co...

  • Article
  • Open Access
1,879 Views
10 Pages

RF Frequency Selective Switch by Multiple PMIM Conversions

  • Wenhui Hao,
  • Yi Peng,
  • Shaohua Wang and
  • Xia Liu

14 February 2023

Nowadays, broadband and multi-channel radio frequency (RF) processing has been widely used in communication, radar, countermeasure, and other applications. At present, multiple-input and multiple-output (MIMO)-oriented microwave photonic signal proce...

  • Article
  • Open Access
5 Citations
3,709 Views
13 Pages

24 October 2022

Indoorlocation-based service (LBS) technology has been emerged as a major research topic in recent years. Positioning technology is essential for providing LBSs. The existing indoor positioning solutions generally use radio-frequency (RF)-based commu...

  • Review
  • Open Access
8 Citations
11,603 Views
22 Pages

Tracking Devices for Pets: Health Risk Assessment for Exposure to Radiofrequency Electromagnetic Fields

  • Judith Klune,
  • Christine Arhant,
  • Ines Windschnurer,
  • Veronika Heizmann and
  • Günther Schauberger

17 September 2021

Every year, approximately 3% of cats and dogs are lost. In addition to passive methods for identifying pets, radiofrequency tracking devices (TDs) are available. These TDs can track a pet’s geographic position, which is transmitted by radio frequenci...

  • Article
  • Open Access
3 Citations
5,085 Views
14 Pages

10 March 2019

Device-Free Localization (DFL) based on the Radio Frequency (RF) is an emerging wireless sensing technology to perceive the position information of the target. To realize the real-time DFL with lower power, Back-projection Radio Tomographic Imaging (...

  • Article
  • Open Access
4 Citations
2,873 Views
21 Pages

Downstream Electric Field Effects during Film Deposition with a Radio Frequency Plasma and Observations of Carbon Reduction

  • Kenneth Scott Alexander Butcher,
  • Vasil Georgiev,
  • Dimka Georgieva,
  • Rositsa Gergova,
  • Penka Terziyska and
  • Peter W. Binsted

19 October 2022

Strong electric fields are generated by radio frequency (RF) plasma sources, and though the RF portion is too high a frequency for ions to react, the direct current (DC) portion of these fields has been shown to cause the atomic migration of metals,...

  • Article
  • Open Access
76 Citations
17,402 Views
13 Pages

11 February 2018

Currently, Internet of Things (IoT) technologies are used in many areas, such as intelligent transportation, smart city, hospital, games, education. Earlier interactive response system uses infrared or radio frequency (RF) wireless communication tech...

  • Article
  • Open Access
5 Citations
2,602 Views
9 Pages

Spatiotemporal Characteristics of Radio Frequency Dielectric Barrier Glow Discharge at Atmospheric Pressure

  • Sen Li,
  • Jiazhen Sun,
  • Rui Sun,
  • Jie Pan,
  • Lin Wang,
  • Chen Chen,
  • Qiang Chen and
  • Zhongwei Liu

11 September 2021

In this paper, argon was used in radio frequency (13.56 MHz) dielectric barrier discharge (rf-DBD) at atmospheric pressure. The IV curve was recorded after gas breakdown, and discharge photos were captured by ICCD camera. Discharges of α mode and γ m...

  • Review
  • Open Access
8 Citations
3,131 Views
22 Pages

Comprehensive Survey on VLC in E-Healthcare: Channel Coding Schemes and Modulation Techniques

  • Javier Guaña-Moya,
  • Milton Román Cañizares,
  • Pablo Palacios Játiva,
  • Iván Sánchez,
  • Dayana Ruminot and
  • Fernando Vergara Lobos

3 October 2024

The integration of information and communication technologies in the field of healthcare has generated a positive transformation in the traditional way of providing patient care, optimizing medical services, and streamlining healthcare operations. Tr...

  • Article
  • Open Access
11 Citations
3,097 Views
12 Pages

Charged Hybrid Microstructures in Transparent Thin-Film ITO Traps: Localization and Optical Control

  • Dmitrii Shcherbinin,
  • Vadim Rybin,
  • Semyon Rudyi,
  • Aliaksei Dubavik,
  • Sergei Cherevkov,
  • Yuri Rozhdestvensky and
  • Andrei Ivanov

19 April 2023

In the present study, we propose a new transparent thin-film ITO surface radio-frequency (RF) trap. Charged hybrid microstructures were localized in the developed ITO trap. We show, analytically and experimentally, that the position of the localizati...

  • Article
  • Open Access
2 Citations
2,078 Views
13 Pages

26 April 2024

Recently, artificial intelligence (AI) has been applied in various industries. One such application is indoor user positioning using Big Data. The traditional method for positioning is the global positioning system (GPS). However, the performance of...

  • Article
  • Open Access
73 Citations
6,193 Views
16 Pages

16 April 2020

Electronic performance and tracking systems (EPTS) and microelectromechanical systems (MEMS) allow the measurement of training load (TL) and collective behavior in team sports so that match performance can be optimized. Despite the frequent use of ra...

  • Article
  • Open Access
41 Citations
7,704 Views
17 Pages

Experimental Evaluation of UWB Indoor Positioning for Indoor Track Cycling

  • Kevin Minne,
  • Nicola Macoir,
  • Jen Rossey,
  • Quinten Van den Brande,
  • Sam Lemey,
  • Jeroen Hoebeke and
  • Eli De Poorter

1 May 2019

Accurate radio frequency (RF)-based indoor localization systems are more and more applied during sports. The most accurate RF-based localization systems use ultra-wideband (UWB) technology; this is why this technology is the most prevalent. UWB posit...

  • Article
  • Open Access
991 Views
18 Pages

19 September 2025

Recent advances in Radio Frequency (RF)-based device classification have shown promise in enabling secure and efficient wireless communications. However, the energy efficiency and low-latency processing capabilities of neuromorphic computing have yet...

  • Article
  • Open Access
1 Citations
5,232 Views
14 Pages

Design of a RF Switch Used in Redundant Atomic Clock Configurations

  • Yuqing Hou,
  • Sangyuan Wang,
  • Sheng Tang and
  • Tao Zhang

20 May 2019

Atomic clocks provide frequency reference signals for communication, aerospace, satellite navigation and other systems. The redundant configuration of atomic clocks is necessary for ensuring the continuity and stability of the system. A radio frequen...

  • Article
  • Open Access
31 Citations
3,983 Views
15 Pages

11 August 2018

This paper presents results for a comprehensive study that compares the performance of three electricity-based thermal pretreatment methods for improving the effectiveness of anaerobic digestion (AD) to process municipal wastewater sludge. The study...

  • Feature Paper
  • Article
  • Open Access
4 Citations
3,441 Views
16 Pages

10 August 2020

Information fusion combining inertial navigation and radio frequency (RF) technologies, is commonly applied in indoor positioning systems (IPSs) to obtain more accurate tracking results. The performance of the inertial navigation system (INS) subsyst...

  • Article
  • Open Access
8 Citations
3,454 Views
22 Pages

Multi-Channel RF Supervision Module for Thermal Magnetic Resonance Based Cancer Therapy

  • Haopeng Han,
  • Eva Oberacker,
  • Andre Kuehne,
  • Shuailin Wang,
  • Thomas Wilhelm Eigentler,
  • Eckhard Grass and
  • Thoralf Niendorf

28 February 2021

Glioblastoma multiforme (GBM) is the most lethal and common brain tumor. Combining hyperthermia with chemotherapy and/or radiotherapy improves the survival of GBM patients. Thermal magnetic resonance (ThermalMR) is a hyperthermia variant that exploit...

  • Article
  • Open Access
6 Citations
4,427 Views
17 Pages

7 August 2023

Intelligent transportation systems (ITS) urgently need to realize vehicle identification, dynamic monitoring, and traffic flow monitoring under high-speed motion conditions. Vehicle tracking based on radio frequency identification (RFID) and electron...

  • Feature Paper
  • Article
  • Open Access
12 Citations
6,083 Views
20 Pages

Improving RF Fingerprinting Methods by Means of D2D Communication Protocol

  • Syed Khandker,
  • Joaquín Torres-Sospedra and
  • Tapani Ristaniemi

Radio Frequency (RF) fingerprinting is widely applied for indoor positioning due to the existing Wi-Fi infrastructure present in most indoor spaces (home, work, leisure, among others) and the widespread usage of smartphones everywhere. It corresponds...

  • Article
  • Open Access
1,304 Views
19 Pages

A Complete Solution for Ultra-Wideband Based Real-Time Positioning

  • Vlad Ratiu,
  • Ovidiu Ratiu,
  • Olivier Raphael Smeyers,
  • Vasile Teodor Dadarlat,
  • Stefan Vos and
  • Ana Rednic

25 July 2025

Real-time positioning is a technological field with a multitude of applications, which expand across many scopes: from positioning within a large area to localization within smaller spaces; from locating people to locating equipment; from large-scale...

  • Article
  • Open Access
4 Citations
7,096 Views
11 Pages

13 April 2016

One of the most widely used tools in cancer treatment is external beam radiotherapy. However, the major risk involved in radiotherapy is excess radiation dose to healthy tissue, exacerbated by patient motion. Here, we present a simulation study of a...

  • Article
  • Open Access
866 Views
19 Pages

An Integrated RF Sensor Design for Anchor-Free Collaborative Localization in GNSS-Denied Environments

  • Di Bai,
  • Xinran Li,
  • Lingyun Zhou,
  • Chunyong Yang,
  • Yongqiang Cui,
  • Liyun Bai and
  • Yunhao Chen

To address the challenge of collaborative nodes being unable to accurately perceive each other’s positions in global navigation satellite system (GNSS)-denied environments (such as after hostile interference or in urban canyons), we propose a G...

  • Article
  • Open Access
9 Citations
2,528 Views
14 Pages

A New Internet of Things Hybrid VLC/RF System for m-Health in an Underground Mining Industry

  • Daniel Iturralde,
  • Javier Guaña-Moya,
  • Pablo Palacios Játiva,
  • Iván Sánchez,
  • Muhammad Ijaz,
  • Ali Dehghan Firoozabadi and
  • David Zabala-Blanco

20 December 2023

This paper proposes a new system based on the Industrial Internet of Things (IIoT) for the monitoring of Mobile Health (m-Health) of workers in the underground mining industry. The proposed architecture uses a hybrid model in data transmission. Visib...

  • Article
  • Open Access
12 Citations
2,796 Views
14 Pages

Effects of Radio Frequency Tempering on the Texture of Frozen Tilapia Fillets

  • Jiwei Jiang,
  • Fen Zhou,
  • Caining Xian,
  • Yuyao Shi and
  • Xichang Wang

2 November 2021

Radio frequency (RF) tempering has been proposed as a new alternative method for tempering frozen products because of its advantages of rapid and volumetric heating. In this study, the texture of RF-tempered frozen tilapia fillets was determined unde...

  • Article
  • Open Access
9 Citations
3,913 Views
20 Pages

Ultra-Low-Power, High-Accuracy 434 MHz Indoor Positioning System for Smart Homes Leveraging Machine Learning Models

  • Haq Nawaz,
  • Ahsen Tahir,
  • Nauman Ahmed,
  • Ubaid U. Fayyaz,
  • Tayyeb Mahmood,
  • Abdul Jaleel,
  • Mandar Gogate,
  • Kia Dashtipour,
  • Usman Masud and
  • Qammer Abbasi

25 October 2021

Global navigation satellite systems have been used for reliable location-based services in outdoor environments. However, satellite-based systems are not suitable for indoor positioning due to low signal power inside buildings and low accuracy of 5 m...

  • Article
  • Open Access
3 Citations
4,065 Views
22 Pages

Magnetic Positioning Technique Integrated with Near-Field Communication for Wireless EV Charging

  • Zhongnan Qian,
  • Rui Yan,
  • Zeqian Cheng,
  • Jiande Wu and
  • Xiangning He

1 March 2020

For wireless electric vehicle charging, the relative position of the primary and secondary coils has significant impacts on the transferred power, efficiency and leakage magnetic flux. In this paper, a magnetic positioning method using simultaneous p...

  • Article
  • Open Access
16 Citations
4,122 Views
13 Pages

Performance Improvement for Mixed RF–FSO Communication System by Adopting Hybrid Subcarrier Intensity Modulation

  • Ting Jiang,
  • Lin Zhao,
  • Hongzhan Liu,
  • Dongmei Deng,
  • Aiping Luo,
  • Zhongchao Wei and
  • Xiangbo Yang

6 September 2019

The improvement for hybrid radio frequency–free space optical (RF–FSO) communication system in wireless optical communications has acquired growing interests in recent years, but rarely improvement is based on hybrid modulation. Therefore...

  • Article
  • Open Access
11 Citations
2,976 Views
13 Pages

Energy-Efficient Trajectory Optimization for UAV-Based Hybrid FSO/RF Communications with Buffer Constraints

  • Rong-Rong Lu,
  • Yang Ma,
  • Sheng-Hong Lin,
  • Bingyuan Zhang,
  • Qinglin Wang and
  • Jin-Yuan Wang

28 November 2021

This paper focuses on an unmanned aerial vehicle (UAV) assisted hybrid free-space optical (FSO)/radio frequency (RF) communication system. Considering the rate imbalance between the FSO and RF links, a buffer is employed at the UAV. Initially, theore...

  • Feature Paper
  • Review
  • Open Access
24 Citations
8,686 Views
46 Pages

27 December 2022

A variety of positioning systems have emerged for indoor localization which are based on several system strategies, location methods, and technologies while using different signals, such as radio frequency (RF) signals. Demands regarding positioning...

  • Article
  • Open Access
10 Citations
2,479 Views
23 Pages

Frequency Instability Impact of Low-Cost SDRs on Doppler-Based Localization Accuracy

  • Kacper Bednarz,
  • Jarosław Wojtuń,
  • Jan M. Kelner and
  • Krzysztof Różyc

6 February 2024

In this paper, we explore several widely available software-defined radio (SDR) platforms that could be used for locating with the signal Doppler frequency (SDF) method. In the SDF, location error is closely related to the accuracy of determining the...

  • Article
  • Open Access
7 Citations
3,377 Views
18 Pages

22 November 2019

Radio tomographic imaging (RTI) is a technology for target localization by using radio frequency (RF) sensors in a wireless network. The change of the attenuation field caused by the target is represented by a shadowing image, which is then used to e...

  • Review
  • Open Access
5 Citations
3,429 Views
28 Pages

Trends in Food Pathogens Risk Attenuation

  • Elisabeta Elena Popa,
  • Elena Loredana Ungureanu,
  • Mihaela Geicu-Cristea,
  • Amalia Carmen Mitelut,
  • Mihaela Cristina Draghici,
  • Paul Alexandru Popescu and
  • Mona Elena Popa

Foodborne pathogens represent one of the most dangerous threats to public health along the food chain all over the world. Over time, many methods were studied for pathogen inhibition in food, such as the development of novel packaging materials with...

  • Article
  • Open Access
29 Citations
4,862 Views
25 Pages

Mobile Synchronization Recovery for Ultrasonic Indoor Positioning

  • Riccardo Carotenuto,
  • Massimo Merenda,
  • Demetrio Iero and
  • Francesco G. Della Corte

27 January 2020

The growing interest for indoor position-based applications and services, as well as ubiquitous computing and location aware information, have led to increasing efforts toward the development of positioning techniques. Many applications require accur...

  • Article
  • Open Access
9 Citations
12,019 Views
25 Pages

Improvement of Ultrasound-Based Localization System Using Sine Wave Detector and CAN Network

  • Tan-Sy Nguyen,
  • Trong-Nghia Nguyen,
  • Quoc-Sang Tran and
  • Thai-Hoang Huynh

This paper presents an improved indoor localization system based on radio frequency (RF) and ultrasonic signals, which we named the SNSH system. This system is composed of a transmitter mounted in a mobile target and a series of receiver nodes that a...

  • Article
  • Open Access
5 Citations
3,134 Views
15 Pages

21 November 2022

A wideband and low-power distributed cascode mixer is implemented for future mobile communications. The distributed design inspired by the distributed amplifier (DA) enables a mixer to operate in a wide band. In addition, the cascode structure and in...

  • Article
  • Open Access
17 Citations
5,017 Views
13 Pages

12 October 2021

In this paper, we report a novel laterally actuated Radio Frequency (RF) Microelectromechanical Systems (MEMS) switch, which is based on a combination of electrothermal actuation and electrostatic latching hold. The switch takes the advantages of bot...

  • Article
  • Open Access
9 Citations
7,397 Views
12 Pages

Control of the Nano-Particle Weight Ratio in Stainless Steel Micro and Nano Powders by Radio Frequency Plasma Treatment

  • Dong-Yeol Yang,
  • Youngja Kim,
  • Min Young Hur,
  • Hae June Lee,
  • Yong-Jin Kim,
  • Tae-Soo Lim,
  • Ki-Bong Kim and
  • Sangsun Yang

6 November 2015

This study describes how to make stainless steel hybrid micro-nano-powders (a mixture of micro-powder and nano-powder) using an in situ one-step process via radio frequency (RF) thermal plasma treatment. Nano-particles attached to micro-powders were...

  • Communication
  • Open Access
15 Citations
6,638 Views
8 Pages

Accuracy of WAAS-Enabled GPS-RF Warning Signals When Crossing a Terrestrial Geofence

  • Lindsay M. Grayson,
  • Robert F. Keefe,
  • Wade T. Tinkham,
  • Jan U. H. Eitel,
  • Jarred D. Saralecos,
  • Alistair M. S. Smith and
  • Eloise G. Zimbelman

18 June 2016

Geofences are virtual boundaries based on geographic coordinates. When combined with global position system (GPS), or more generally global navigation satellite system (GNSS) transmitters, geofences provide a powerful tool for monitoring the location...

  • Article
  • Open Access
6 Citations
3,207 Views
21 Pages

Validation of an RF Image System for Real-Time Tracking Neurosurgical Tools

  • Carolina Blanco-Angulo,
  • Andrea Martínez-Lozano,
  • Carlos G. Juan,
  • Roberto Gutiérrez-Mazón,
  • Julia Arias-Rodríguez,
  • Ernesto Ávila-Navarro and
  • José M. Sabater-Navarro

19 May 2022

A radio frequency (RF)-based system for surgical navigation is presented. Surgical navigation technologies are widely used nowadays for aiding the surgical team with many interventions. However, the currently available options still pose considerable...

  • Article
  • Open Access
6 Citations
4,538 Views
14 Pages

Design and Implementation of Split-Leg Type Elliptical Whole-Body Birdcage RF Coil at 1.5 T MRI

  • Suchit Kumar,
  • Han-Jae Chung,
  • You-Jin Jeong,
  • Heung-Kyu Lee and
  • Chang-Hyun Oh

13 August 2021

The feasibility and the development of a four-port elliptical birdcage radio frequency (RF) coil for generating a homogenous RF magnetic (B1) field is presented for a space-constrained narrow-bore magnetic resonance imaging (MRI) system. Optimization...

  • Review
  • Open Access
37 Citations
4,668 Views
26 Pages

24 February 2023

A receive signal strength (RSS) fingerprinting-based indoor wireless localization system (I-WLS) uses a localization machine learning (ML) algorithm to estimate the location of an indoor user using RSS measurements as the position-dependent signal pa...

  • Article
  • Open Access
15 Citations
5,197 Views
24 Pages

Exploiting Ultra-Wideband Channel Impulse Responses for Device-Free Localization

  • Marco Cimdins,
  • Sven Ole Schmidt,
  • Peter Bartmann and
  • Horst Hellbrück

20 August 2022

In radio-frequency (RF)-based device-free localization (DFL), the number of sensors acting as RF transmitters and receivers is crucial for accuracy and system costs. Two promising approaches for DFL have been identified in the past: radio tomographic...

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