نتایج جستجو برای: heterogeneous satellite network

تعداد نتایج: 852350  

Due to lack of resources such as transmission power and bandwidth in satellite systems, resource allocation problem is a very important challenge. Nowadays, new heterogeneous network includes one or more satellites besides terrestrial infrastructure, so that it is considered that each satellite has multi-beam to increase capacity. This type of structure is suitable for a new generation of commu...

2012
Jianli Zhao Qiuxia Sun

With the application of different kinds of satellites, the satellite network will be one heterogeneous and complex system, then the satellite network management is more difficult and the classical network management architecture cannot be applied to the satellite network directly. Aimed at the new features of the satellite network, a hierarchy network management architecture is proposed and a n...

Journal: :مهندسی برق مدرس 0
pedram hajipour 1phd student, department of communication, college of electrical engineering, yadegar-e-imam khomeini (rah) shahr-e-rey branch, islamic azad university, tehran, iran, ali shahzadi assistant professor, department of communication, college of electrical engineering, yadegar-e-imam khomeini (rah) shahr-e-rey branch, islamic azad university, tehran, iran,

in this paper, an interference management for multi-beam satellite network to enhance spectral efficiency is studied. first, a two-satellite for future generation satellite network using cognitive radio technology is provided.this network is composed of a secondary satellite and aprimary satellite where the primary satellite system does not suffer from severe destructive interferences coming fr...

2006
Sastri L. Kota

The next generation global communication network infrastructure is designed to be all IP based supporting various heterogeneous core and access technologies for broadband and mobile user applications. In this paper, we discuss the trends of broadband satellite communication networks to meet the emerging aeronautical and fast train applications, and mobile users in providing ubiquitous global co...

2014
Giuseppe Cocco Nader Alagha Christian Ibars

This chapter is dedicated to the application of cooperative relaying in heterogeneous land mobile satellite (LMS) systems. The aim of cooperation in this context is to help providing the missing coverage in harsh propagation environments characterized by a high node density such as urban areas. We study benefits and limits of the cooperative approach adopting a network model that is at the same...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1389

wireless sensor networks (wsns) are one of the most interesting consequences of innovations in different areas of technology including wireless and mobile communications, networking, and sensor design. these networks are considered as a class of wireless networks which are constructed by a set of sensors. a large number of applications have been proposed for wsns. besides having numerous applic...

2007
Reuben Wright Manuel Sánchez-Gestido Asunción Gómez-Pérez María S. Pérez-Hernández Rafael González-Cabero Óscar Corcho

The combination of Semantic Web and Grid technologies and architectures eases the development of applications that share heterogeneous resources (data and computing elements) that belong to several organisations. The Aerospace domain has an extensive and heterogeneous network of facilities and institutions, with a strong need to share both data and computational resources for complex processing...

Journal: :J. Electrical and Computer Engineering 2007
Georgios Gardikis Anastasios Kourtis

This paper presents a mechanism for dynamic rate control of satellite integrated services, based on a cross-layer approach, utilising link quality feedback from the satellite terminals. The mechanism, namely, satellite resource management system (SRMS) relies on the adaptive coding and modulation (ACM) capabilities of DVB-S2 in order to perform real-time adjustments on the physical, network and...

2012
Christopher N. Ververidis Pantelis A. Frangoudis Yannis Thomas Vasilios A. Siris George C. Polyzos Ilias Andrikopoulos Fabrice Arnal Cédric Baudoin Maria Guta

The recent paradigm shift in the Internet’s usage, from the host-centric communication model to a model where users request information irrespectively of its location, is coupled with an increasing need for converged and seamless access over heterogeneous wired and wireless (fixed, cellular, and satellite) networks. Using a satellite network emulator within a publish/subscribe Information Centr...

Journal: :Wireless Personal Communications 2003
Andrea Conti Andrea Giorgetti Francesco Tarantola

In this work the transmission of multimedia services through heterogeneous integrated terrestrialsatellite networks is analyzed by means of measurement on a real test-bed including a video on demand (VoD) server, an IEEE802.11 wireless local area network (WLAN) integrated with a wired LAN, and a geostationary Ka-band satellite link in service at the Telecommunication Laboratory at IEIIT-BO/CNR,...

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