Results 21 to 30 of about 37,537 (191)

Iterative Synchronization of Multiuser Ultra-Wideband Signals

IEEE Transactions on Wireless Communications, 2010
In this paper, two novel iterative chip-level synchronization methods, one blind and the other data-aided, are proposed for chip-interleaved time-hopping (TH) ultra-wideband signals that are subject to intersymbol interference (ISI) and multiple access interference (MAI).
Ekrem, Ersen, Koca, Mutlu, Delic, Hakan
openaire   +2 more sources

Robot vision ultra-wideband wireless sensor in non-cooperative industrial environments

International Journal of Advanced Robotic Systems, 2018
In this article, the ultra-wideband technology for localization and tracking of the robot gripper (behind the obstacles) in industrial environments is presented.
Pavol Galajda, Alena Galajdova, Stanislav Slovak, Martin Pecovsky, Milos Drutarovsky, Marek Sukop, Ihab BA Samaneh   +6 more
doaj   +1 more source

Monitoring Respiratory Motion during VMAT Treatment Delivery Using Ultra-Wideband Radar

Sensors, 2022
The goal of this paper is to evaluate the potential of a low-cost, ultra-wideband radar system for detecting and monitoring respiratory motion during radiation therapy treatment delivery.
Anwar Fallatah, Miodrag Bolic, Miller MacPherson, Daniel J. La Russa   +3 more
doaj   +1 more source

Programmable ultra-wideband coded signal generator

Electronics Letters, 2012
A novel programmable ultra-wideband coded signal generator based on digital integrated circuits is designed. The bipolar impulse can be generated by a transformer without any analogue circuit. A pseudorandom code is used to modulate the monocycle impulse by the time modulation (TM) scheme.
Wei Wang, Qunying Zhang, Guangyou Fang
openaire   +1 more source

Wi-PoS : a low-cost, open source ultra-wideband (UWB) hardware platform with long range sub-GHz backbone [PDF]

, 2019
Ultra-wideband (UWB) localization is one of the most promising approaches for indoor localization due to its accurate positioning capabilities, immunity against multipath fading, and excellent resilience against narrowband interference.
De Poorter, Eli, Jooris, Bart, Lemey, Sam, Macoir, Nicola, Ridolfi, Matteo, Rossey, Jen, Van den Brande, Quinten, Van Herbruggen, Ben   +7 more
core   +1 more source

Low-Complexity Joint Angle of Arrival and Time of Arrival Estimation of Multipath Signal in UWB System

Sensors, 2023
In an ultra-wideband (UWB) system, the two-dimensional (2D) multiple signal classification (MUSIC) algorithms based on high-precision 2D spectral peak search can jointly estimate the time of arrival (TOA) and angle of arrival (AOA).
Weiming Deng, Jianfeng Li, Yawei Tang, Xiaofei Zhang   +3 more
doaj   +1 more source

A Fully Differential Digital CMOS Pulse UWB Generator [PDF]

, 2009
A new fully-digital CMOS pulse generator for impulse-radio Ultra-Wide-Band (UWB) systems is presented. First, the shape of the pulse which best fits the FCC regulation in the 3.1-5 GHz sub-band of the entire 3.1-10.6 GHz UWB bandwidth is derived and ...
C. Buccella, D. Barras, D.D. Wentzloff, H. Kim, J. Lee, J. Ryckaert, J.R. Fernandes, L. Smaini, L. Stoica, Mariagrazia Graziano, Mario R. Casu, Maurizio Zamboni, N.H.E. Weste, S. Bagga, S.B.T. Wang, T. Norimatsu, Y. Bachelet   +16 more
core   +1 more source

Target Localization and Tracking Using an Ultra-Wideband Chaotic Radar With Wireless Synchronization Command

IEEE Access, 2021
An ultra-wideband chaotic radar with wireless synchronization command is proposed and experimentally demonstrated for target localization and tracking. This radar uses the wideband chaotic pulse position modulation (CPPM) signal as the probe signal and ...
Bingjie Wang, Ruixin Xie, Hang Xu, Jianguo Zhang, Hong Han, Zhaoxia Zhang, Li Liu, Jingxia Li   +7 more
doaj   +1 more source

A time difference of arrival/angle of arrival fusion algorithm with steepest descent algorithm for indoor non-line-of-sight locationing

International Journal of Distributed Sensor Networks, 2019
In complex indoor propagation environment, the non-line-of-sight error caused by various obstacles brings great error to node positioning. Choosing the appropriate signal transmission methods is important to improve node indoor positioning accuracy.
Chong Shen, Chengxiao Wang, Kun Zhang, Xianpeng Wang, Jing Liu   +4 more
doaj   +1 more source

Method of estimation of frequency parameters of ultra-wideband signals with an unknown spectrum shape in the presence of interference

Физика волновых процессов и радиотехнические системы
Background. One of the urgent tasks of processing ultra-wideband signals is the assessment of their frequency parameters in complex signal-noise conditions. Aim.
The Tuan Doan, Pavel A. Trifonov
doaj   +1 more source