Results 11 to 20 of about 2,673 (197)

Design and Analysis of Ultralow Voltage Graphene on the Silicon Rich Nitride Tunable Ring Resonator-Based Add-Drop Filter for DWDM Systems

open access: yesInternational Journal of Optics, 2022
We propose and simulate a third-order 3D electro-optically highly tunable compact add-drop filter based on nonlinear microring resonators. The used tuning mechanism relies on enhanced Kerr nonlinearity in a graphene layer integrated on top of a two ...
Filston Rukerandanga   +2 more
doaj   +1 more source

Extracting Customer Behavior Pattern in a Telecom Company Using Temporal Fuzzy Clustering and Data Mining [PDF]

open access: yesJournal of Information Technology Management, 2017
One of the most important issues in Customer Relationship Management is customer segmentation and product offer based on their needs. In practice, Customer’s behavior will change over the time by changes in technology, increase in the number of new ...
Mohammad Fathian, Ehsan Azhdari
doaj   +1 more source

THE ATS-1 COMMUNICATIONS MODEL: QUASI-MASS AUDIO NETWORKS FOR EDUCATION AND SOCIAL SERVICE

open access: yesPrometheus, 1984
The ATS-1 satellite is used for social service audioconference networks in the Pacific Islands. Channel limitations restrict the communication efficiency of these networks, but not so badly as to drop them below accepted standards for telecommunication ...
James C. Lange
doaj   +1 more source

Characteristics of Rain-Induced Attenuation over Signal Links at Frequency Ranges of 25 and 38 GHz Observed in Beijing

open access: yesRemote Sensing, 2021
Wireless communication has become a very important part of our lives, and it is well known that meteorological factors affect the quality of communication links, especially at higher frequencies because the physical dimensions of raindrops, hail stones ...
Congzheng Han   +9 more
doaj   +1 more source

Designing a Novel High-Performance FBG-OADM Based on Finite Element and Eigenmode Expansion Methods

open access: yesApplied Sciences, 2016
This study designed a novel high-performance fiber Bragg grating (FBG) optical add/drop multiplexers (OADMs) by referring to current numerical simulation methods. The proposed FBG-OADM comprises two single-mode fibers placed side by side.
Sheng-Chih Yang   +2 more
doaj   +1 more source

Plasmonic Filter and Demultiplexer Based on Square Ring Resonator

open access: yesApplied Sciences, 2018
A ring resonator is a basic component of traditional photonic integrated circuits (PIC), which has been, however, found difficult to be applied efficiently in high-compact plasmonic metal-insulator-metal (MIM) systems.
Zhaojian Zhang   +6 more
doaj   +1 more source

Impact of mobile subscribers dual stack IPv4/IPv6 deployment

open access: yesCommunications in Science and Technology, 2018
The use of CGNAT at PT. ZYX as a mobile telecommunication service provider cannot be relied as the solution to solve addressing needs against subscriber growth in future technology. Meanwhile, native IPv6 deployment is currently application-driven, which
Mohammad Dian Pahlevi, Benfano Soewito
doaj   +1 more source

Numerical and Experimental Modeling of Compressed Air-to-Air Heat Exchanger [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
Compact heat exchangers serve a variety of applications. In communication systems, air-to-air heat exchangers are frequently utilized for the efficient cooling of equipment. Given the high expense associated with this system, effective cooling is crucial.
Amir Ramtinpoua   +4 more
doaj   +1 more source

Flying Ad Hoc Networks: A New Domain for Network Communications

open access: yesSensors, 2018
The advent of flying ad hoc networks (FANETs) has opened an opportunity to create new added-value services. Even though it is clear that these networks share common features with its predecessors, e.g., with mobile ad hoc networks and with vehicular ad ...
Antonio Guillen-Perez   +1 more
doaj   +1 more source

Accounting for Energy Cost When Designing Energy-Efficient Wireless Access Networks

open access: yesEnergies, 2018
Because of the increase of the data traffic demand, wireless access networks, through which users access telecommunication services, have expanded, in terms of size and of capability and, consequently, in terms of power consumption.
Greta Vallero   +3 more
doaj   +1 more source

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