Results 101 to 110 of about 93,158 (208)

Performance evaluation of OFDM and impulse-radio ultra-wideband over fiber distribution for in-building networks [PDF]

open access: yes, 2009
This paper reports the compared performance of the two main ultra-wideband (UWB) implementations, OFDM-based (OFDM-UWB) and impulse-radio UWB, when transmitted over optical fiber for in-building communications employing external electro-optic modulation.
Roberto Llorente   +7 more
core   +1 more source

Design of mine-used integrated intelligent vehicle terminal based on UWB

open access: yesMeikuang Anquan
We designed an intelligent vehicle terminal based on UWB accurate positioning technology, which integrates multiple functions such as precise positioning, 4G/5G wireless communication, video monitoring, data acquisition, voice call and other functions ...
Yang HAN
doaj   +1 more source

Key technology of an identification card for mobile phone positioning

open access: yesMeikuang Anquan
In order to solve the problem that most of the existing mine-used smart phones only have the functions of voice calls, video photos, data transmission and so on, and do not have the functions of precise positioning, position coordinate display, message ...
Fei WANG
doaj   +1 more source

Deep Learning-Based LOS and NLOS Identification in Wireless Body Area Networks

open access: yesSensors, 2019
In this article, the usage of deep learning (DL) in ultra-wideband (UWB) Wireless Body Area Networks (WBANs) is presented. The developed approach, using channel impulse response, allows higher efficiency in identifying the direct visibility conditions ...
Krzysztof K. Cwalina   +4 more
doaj   +1 more source

Proof of Concept for measuring vital signs using UWB transceivers

open access: yesCurrent Directions in Biomedical Engineering
This paper shows the possibility of using Ultrawideband (UWB) DW3000 transceivers for noninvasive vital sign monitoring via a transversal propagation method.
Egemann Noel   +2 more
doaj   +1 more source

An improved trilateral positioning algorithm based on UWB

open access: yesGong-kuang zidonghua, 2019
In view of the problems that existing underground positioning algorithm based on UWB is complex and solution value is not global optimal, an improved trilateral positioning algorithm based on UWB was proposed.
YOU Xiaorong, PEI Hao, HUO Zhenlong
doaj   +1 more source

Miniature transparent UWB antenna with tunable notch for green wireless applications [PDF]

open access: yes, 2011
Copyright @ 2011 IEEEA miniature transparent UWB antenna with tunable notch that can be incorporated with a solar panel for harnessing solar energy has been proposed and presented.
AbuTarboush, HF   +11 more
core   +1 more source

Accurate Permittivity Measurements for Microwave Imaging via Ultra-Wideband Removal of Spurious Reflectors

open access: yesSensors, 2010
The use of microwave imaging is becoming more prevalent for detection of interior hidden defects in manufactured and packaged materials. In applications for detection of hidden moisture, microwave tomography can be used to image the material and then ...
Mathew G. Pelletier   +3 more
doaj   +1 more source

Photonic Generation and Transmission of 2 Gbit/s Power-Efficient Impulse Radio for OOK Modulated Ultrawideband over Fiber System [PDF]

open access: yes, 2012
We propose and demonstrate a flexible and high-speed impulse radio ultrawideband (IR-UWB) over fiber system using various modulation schemes. Two kinds of fully Federal Communication Commission (FCC) compliant UWB pulses are produced, which is based on ...
Yu, Hongchen   +5 more
core   +1 more source

Mine personnel cooperative location algorithm based on ultra-wideband

open access: yes河南理工大学学报. 自然科学版
ObjectivesTo address the issues of positioning blind zones, low localization accuracy for personnel at the working face, and non-line-of-sight (NLOS) errors in underground mines, a cooperative localization algorithm based on ultra-wideband (UWB ...
Wang Lei   +5 more
doaj   +1 more source

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