Results 101 to 110 of about 115,454 (254)

Hybrid Urban Navigation for Smart Cities

, 2017
This paper proposes a design for a hybrid, city-wide urban navigation system for moving agents demanding dedicated assistance. The hybrid system combines GPS and vehicle-to-vehicle communication from an ad-hoc network of parked cars, and RFID from fixed ...
Gilmore, Robert, Moran, Oisín, Ordóñez-Hurtado, Rodrigo, Shorten, Robert   +3 more
core   +1 more source

SleepPoseNet: Multi-View Learning for Sleep Postural Transition Recognition Using UWB

IEEE journal of biomedical and health informatics, 2020
Recognizing movements during sleep is crucial for the monitoring of patients with sleep disorders, and the utilization of ultra-wideband (UWB) radar for the classification of human sleep postures has not been explored widely.
Maytus Piriyajitakonkij, Patchanon Warin, Payongkit Lakhan, Pitshaporn Leelaarporn, Nakorn Kumchaiseemak, Supasorn Suwajanakorn, T. Pianpanit, N. Niparnan, S. Mukhopadhyay, Theerawit Wilaiprasitporn   +9 more
semanticscholar   +1 more source

Wideband and Frequency‐Reconfigurable Loop Antenna for Sub‐6 GHz Applications

IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
This work tackles the longstanding bandwidth limitation of loop antennas by introducing a compact, symmetrical design that integrates a microstrip balun and periodic varactor loading. Unlike existing methods that often compromise symmetry or beam control, the proposed structure achieves both wide impedance bandwidth and frequency reconfigurability ...
Amir Jafargholi, Romain Fleury
wiley   +1 more source

Performance of Hybrid Direct-Sequence Time-Hopping Ultrawide Bandwidth Systems over Nakagami-m Fading Channels

, 2007
This paper investigates and compares the performance of various ultrawide bandwidth (UWB) systems when communicating over Nakagami-m fading channels. Specifically, the direct-sequence (DS), time-hopping (TH) and hybrid direct-sequence time-hopping (DS-TH)
Ahmed, Qasim Zeeshan, Yang, Lie-Liang
core  

MAC Protocol Design for Optical Wireless Body‐Area Networks: Latency, Energy Efficiency and Scalability Analysis

IET Networks, Volume 15, Issue 1, January/December 2026.
This work investigates suitable MAC protocols for medical optical wireless body‐area networks (WBANs), focussing on multiple access management. Using realistic channel models, we evaluate the network performance in terms of energy efficiency, quality‐of‐service and scalability for different IEEE protocols, for both intra‐ and extra‐WBAN connectivity in
Christos Giachoudis, Mohammad‐Ali Khalighi, Stanislav Zvanovec, Vasilis K. Papanikolaou, Sotiris A. Tegos, George K. Karagiannidis   +5 more
wiley   +1 more source

Towards Autonomous Uwb-Based Uav Indoor Navigation

Acta Electrotechnica et Informatica
This paper presents a system for autonomous indoor navigation of the DJI Mini 3 drone by combining an Android-based control application with ultra-wideband (UWB) technology for precise localization.
Krupáš Maroš, Pačuta Kristián, Zolotová Iveta   +2 more
doaj   +1 more source

Joint Time Synchronisation and Localisation Method by TDOA Observation in 5G Networks

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This work proposes a method for joint time synchronisation and localisation problems and proposes to obtain the initial values of the alternating iteration algorithm through solving the MVIE problem. The simulations showcase the satisfying positioning accuracy and clock synchronisation accuracy of the proposed method.
Qiao Liu, Yutong Tian, Zhihang Qu, Yong Li   +3 more
wiley   +1 more source

UWB slot-loaded Antipodal Vivaldi Antenna for through-the-wall radar imaging (TWRI) applications [PDF]

Serbian Journal of Electrical Engineering
The study presents an Ultra-Wideband Slot-loaded Antipodal Vivaldi Antenna (SL-AVA) designed for through-the-wall radar imaging (TWRI) applications. The antenna incorporates rectangular slots of varying lengths and widths, effectively extending ...
Ahmed Sajjad, Joret Ariffuddin, Katiran Norshidah, Abbasi Muhammad Inam, Aminuddin Nuramin Fitri   +4 more
doaj   +1 more source

Monitoring Movements of Ataxia Patient by Using UWB Technology

Sensors, 2020
Internet of multimedia things (IoMT) driving innovative product development in health care applications. IoMT requires delay-sensitive and higher bandwidth devices.
Tanjila Akter Zilani, Fadi Al-Turjman, Muhammad Bilal Khan, Nan Zhao, Xiaodong Yang   +4 more
doaj   +1 more source

Blocking Interference Mechanism in Networked Radios Under UWB HPM

IET Science, Measurement &Technology, Volume 20, Issue 1, January/December 2026.
This paper conducts a systematic cross‐level analysis of the damage mechanism encompassing ‘electromagnetic interference–hardware impairment–communication performance’ for QPSK‐based networked radios. Using ultra‐wide spectrum pulse signals as the interference source, the study considers the scenario where electromagnetic interference causes damage to ...
Jiale Zhou, Yijie Bai, Daojie Yu, Kaibai Chen, Jianping Du, Tao Li, Liyue Liang   +6 more
wiley   +1 more source