Results 21 to 30 of about 155,596 (314)

Location-based variability for mobile information systems [PDF]

open access: yes, 2008
Advances in size, power, and ubiquity of computing technology, sensors, and communication technology made possible the development of so-called mobile or nomadic information systems.
Dalpiaz , Fabiano   +6 more
core   +1 more source

Architecture and Features of Mobile Communication Satellite System for Mobile Phone

open access: yes天地一体化信息网络, 2023
The development and construction of mobile communication satellite systems for individual users worldwide have been ongoing for over thirty years, and the technological level and industrial scale of satellite mobile communication are constantly maturing ...
Dong CHEN   +3 more
doaj   +2 more sources

Designing a context-aware middleware for asynchronous communication in mobile ad hoc environments [PDF]

open access: yes, 2004
In mobile ad hoc networks, synchronous communication mechanisms appear to be not suitable, since these assume that the involved entities are present at the same time during the interactions.
Musolesi, Mirco   +2 more
core   +1 more source

Wireless mobile communication systems: current status, application fields and challenges [PDF]

open access: yesProblems of Information Society
The article analyzes the current state of mobile communication systems, and highlights development perspectives from the past to the present, vulnerabilities in security systems and application fields.
Tabriz Agashov
doaj   +1 more source

Optical Performance Monitoring for Intra-LP-Mode Dispersion in Weakly-Coupled Mode-Division Multiplexed Systems

open access: yesIEEE Photonics Journal, 2022
Weakly-coupled mode-division multiplexing (MDM) technique based on linearly-polarized (LP) modes in ultralow-modal-crosstalk few-mode fiber (FMF) has been considered as a promising candidate for capacity enhancement of next-generation optical ...
Mingqing Zuo   +8 more
doaj   +1 more source

Mobile Communication Systems: Evolution and Security

open access: yes, 2019
With the evolution and popularization of mobile communication systems, especially for access to data services, it becomes increasingly important to have a closer look at security systems. From analog systems to the fourth generation, many changes and evolutions occurred.
Teresa Guarda   +5 more
openaire   +2 more sources

Transition Characteristics of Non‐Hermitian Skin Effects in a Zigzag Lattice Without Chiral Symmetry

open access: yesAdvanced Physics Research, 2023
Non‐Hermitian systems recently have attracted tremendous attention due to their plentiful unique and fascinating properties, among which is the localization of an otherwise extensive bulk eigen‐state at the boundary when the open boundary condition (OBC)
Xiaoxiong Wu   +4 more
doaj   +1 more source

Security and communication in mobile object systems

open access: yes, 1997
In this paper we discuss security in mobile object systems. Mobile object systems embody a paradigm where computation may move across the network and carry out distributed activities. This paradigm has been popularized by the JAVA programming language and the work on mobile software agent. We study security problems of interaction mobile object systems
Vitek, Jan   +2 more
openaire   +2 more sources

System Architecture and Mobility Management for Mobile Immersive Communications [PDF]

open access: yesAdvances in Multimedia, 2007
We propose a system design for delivery of immersive communications to mobile wireless devices based on a distributed proxy model. It is demonstrated that this architecture addresses key technical challenges for the delivery of these services, that is, constraints on link capacity and power consumption in mobile devices.
Mehran Dowlatshahi, Farzad Safaei
openaire   +3 more sources

Wireless Mobile Power Communication System Based on Artificial Intelligence Algorithm

open access: yesInternational Transactions on Electrical Energy Systems, 2022
In order to solve the problems of low-risk assessment accuracy and long time-consuming assessment of current wireless mobile communication systems, a wireless mobile communication system based on artificial intelligence algorithms is proposed. First, the
Juan Du, Mingqi Guo
doaj   +1 more source

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