Results 1 to 10 of about 3,104,974 (317)

Simulation and Measurement Studies of The Vdes System’s Terrestrial Component

open access: yesPolish Maritime Research, 2019
In the paper, the measurement and simulation results of the VDES (VHF Data Exchange System) terrestrial component are discussed. It is anticipated that VDES will be one of the major solutions for maritime communications in the VHF band and its ...
Bronk Krzysztof   +4 more
doaj   +1 more source

Machine Learning-Based Field Data Analysis and Modeling for Drone Communications

open access: yesIEEE Access, 2019
In recent years, unmanned aerial vehicle (UAV), also called a drone, is getting more and more important in many emerging technology areas. For communication area, the drone also takes an important role in lots of significant topics like emergency ...
Lin Shan   +5 more
doaj   +1 more source

Local Information Sharing System With Wireless Device-to-Device Communications

open access: yesIEEE Access, 2020
This study aims to develop a system of device-to-device (D2D) communications for information collection, distribution and sharing among local communities.
Lin Shan   +3 more
doaj   +1 more source

Hidden Anchor: A Lightweight Approach for Physical Layer Location Privacy

open access: yesJournal of Computer Systems, Networks, and Communications, 2010
In hybrid wireless sensor networks, where trusted and un-trusted nodes coexist, it becomes important to allow trusted nodes to share information, especially, location information and prevent un-trusted nodes from gaining access to this information.
Rania El-Badry   +2 more
doaj   +1 more source

Channel Measurement and Modeling for 5G Urban Microcellular Scenarios

open access: yesSensors, 2016
In order to support the development of channel models for higher frequency bands, multiple urban microcellular measurement campaigns have been carried out in Berlin, Germany, at 60 and 10 GHz.
Michael Peter   +4 more
doaj   +1 more source

A USRP-Based Multi-Antenna Testbed for Reception of Multi-Site Cellular Signals

open access: yesIEEE Access, 2019
This paper presents a design of a Software Defined Radio (SDR) multi-antenna testbed able to record live cellular signals from multiple sites. This measurement setup based on Universal Software Radio Peripheral (USRP) boards, is used to record live Long ...
Tomasz Izydorczyk   +3 more
doaj   +1 more source

Wavelength Dependent Graphene Oxide-Based Optical Microfiber Sensor for Ammonia Gas

open access: yesSensors, 2021
Ammonia detection in ambient air is critical, given its implication on the environment and human health. In this work, an optical fiber tapered to a 20 µm diameter and coated with graphene oxide was developed for absorbance response monitoring of ammonia
Saad Hayatu Girei   +5 more
doaj   +1 more source

Nonlinear Fiber Loop Mirror Optimization to Enhance the Performance of Multiwavelength Brillouin/Erbium-Doped Fiber Laser

open access: yesIEEE Photonics Journal, 2014
The performance of multiwavelength BEFL based on nonlinear fiber loop mirror (NOLM) optimization has been experimentally investigated. The NOLM is optimized to act as highly reflective mirror, which results in reducing the threshold power and enhancing ...
A. W. Al-Alimi, M. H. Yaacob, A. F. Abas
doaj   +1 more source

ADO: An open digital end-to-end tank based aquaculture platform

open access: yesHardwareX, 2022
The ADO project proposes the development of an IoT solution that allows the digitization of the aquaculture sector, developing the basic elements (data acquisition systems, data storage system and visualization platform) in open source format. Hence, ADO
Ioana Suciu   +3 more
doaj   +1 more source

5G Centralized Multi-Cell Scheduling for URLLC: Algorithms and System-Level Performance

open access: yesIEEE Access, 2018
We study centralized radio access network (C-RAN) with multi-cell scheduling algorithms to overcome the challenges for supporting ultra-reliable low-latency communications (URLLC) in the fifth-generation new radio (5G NR) networks.
Ali Karimi   +4 more
doaj   +1 more source

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