Results 11 to 20 of about 6,374 (186)

A joint positioning method of PDOA and TOF in coal mines based on UWB

open access: yesGong-kuang zidonghua, 2023
The precise positioning of personnel and vehicles in coal mines is an important guarantee for safe and efficient production in coal mines. Currently, ultra-wideband (UWB) wireless communication technology is mainly used for the precise positioning of ...
GUO Aijun
doaj   +1 more source

Ekumenizm a realizacja misyjnego posłannictwa Kościoła w kontekście dokumentów Wszechprawosławnego Synodu na Krecie

open access: yesElpis, 2019
Uchwały Wszechprawosławnego Synodu kładą podwaliny pod dialog ekumeniczny, podkreślając potrzebę dialogu przede wszystkim ze względu na głoszenie światu „prawosławnego świadectwa” wśród innych Kościołów chrześcijańskich i wyznań.
Andrzej Borkowski
doaj   +1 more source

Adaptation of BPSK/TH/UWB Parameters Using RAKE Receiver with IPI in WPAN Indoor Multipath Fading Channels [PDF]

open access: yesEngineering and Technology Journal, 2008
In this paper, the performance of a PRAKE receiver for a pulse based ultra-wideband(UWB) communications system is studied in a realistic channel model that is based on anextensive set of indoor channel measurements. The adaptation of parameters of Binary
Natiq A. Ali, Saleh M. Al-Qaraawy
doaj   +1 more source

Compact Printed Planar Eye Shaped Dipole Antenna for Ultra-Wideband Wireless Applications

open access: yesJournal of Applied Science and Engineering, 2022
This paper deals with the design of a compact printed planar eye shaped dipole antenna. This antenna can be used for ultra-wide band (UWB) wireless communication applications.
A R Rajini   +3 more
doaj   +1 more source

Parents of two-phase flow and theory of “gas-lift”

open access: yesEPJ Web of Conferences, 2014
This paper gives a brief overview of types of two-phase flow. Subsequently, it deals with their mutual division and problems with accuracy boundaries among particular types.
Zitek Pavel, Valenta Vaclav
doaj   +1 more source

The Internet of Things for Health Care: A Comprehensive Survey

open access: yesIEEE Access, 2015
The Internet of Things (IoT) makes smart objects the ultimate building blocks in the development of cyber-physical smart pervasive frameworks. The IoT has a variety of application domains, including health care.
S. M. Riazul Islam   +4 more
doaj   +1 more source

Spatial-Wavelength Multiplexing Error-Controlled Photonic Analog Computing System. [PDF]

open access: yesAdv Sci (Weinh)
A novel photonic integrated circuit prototype implementing the concept of general‐purpose analog computing and demonstrate its capability in radio frequency applications. The chip features a multichannel architecture and performs fully optical analog computation with frequency‐domain parallel processing. An FPGA‐based error‐correction algorithm aims to
Zhu T   +15 more
europepmc   +2 more sources

Experimental turbine VT-400

open access: yesEPJ Web of Conferences, 2016
The experimental air turbine VT400 is located in hall laboratories of the Department of Power System Engineering. It is a single-stage air turbine located in the suction of the compressor.
Zitek Pavel, Milčák Petr, Noga Tomáš
doaj   +1 more source

Design of personnel positioning system for fully mechanized coal face with low power consumption

open access: yesMeikuang Anquan, 2023
Most of the existing accurate positioning systems for underground personnel adopt UWB positioning technology, which is based on the layout mode of personnel positioning card + positioning substation to achieve centimeter-level high precision positioning.
Xian CHEN, Shu ZHOU
doaj   +1 more source

GLRT receivers for UWB systems [PDF]

open access: yesIEEE Communications Letters, 2005
This letter investigates generalized-likelihood-ratio-test (GLRT) detectors for ultra-wideband (UWB) impulse radio systems employing two alternative signaling schemes. One is the so-called transmitted reference method where, in each time frame, a reference pulse is transmitted prior to the data pulse. The other is the differential transmitted reference
D'AMICO, ANTONIO ALBERTO   +1 more
openaire   +1 more source

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