Communications On The Move
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Inmarsat
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Author : INMARSAT.
language : en
Publisher:
Release Date : 1987
Inmarsat written by INMARSAT. and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Msat Mobile Satellite Communications On The Move
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Author : Canada. Department of Communications
language : en
Publisher:
Release Date : 1985
Msat Mobile Satellite Communications On The Move written by Canada. Department of Communications and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.
Ehf Satellite Communications On The Move Blockage Channel Modeling
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Author : Huan Yao
language : en
Publisher:
Release Date : 2004
Ehf Satellite Communications On The Move Blockage Channel Modeling written by Huan Yao and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
Communications On The Move
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Author :
language : en
Publisher: IEEE Computer Society Press
Release Date : 1993
Communications On The Move written by and has been published by IEEE Computer Society Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Combat survivability (Military engineering) categories.
Media On The Move
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Author : Daya Kishan Thussu
language : en
Publisher: Routledge
Release Date : 2006-10-31
Media On The Move written by Daya Kishan Thussu and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-10-31 with Language Arts & Disciplines categories.
Media on the Move provides a critical analysis of the dynamics of the international flow of images and ideas. This comes at a time when the political, economic and technological contexts within which media organisations operate are becoming increasingly global. The surge in transnational traffic in media products has primarily benefited the major corporations such as Disney, AOL, Time Warner and News Corporation. However, as this book argues, new networks have emerged which buck this trend: Brazilian TV is watched in China, Indian films have a huge following in the Arab world and Al Jazeera has become a household name in the West. Combining a theoretical perspective on contra-flow of media with grounded case studies into one up-to-date and accessible volume, Media on the Move provides a much-needed guide to the globalization of media, going beyond the standard Anglo-American view of this evolving phenomenon.
Communications On The Move
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Author : Leslie Haddon
language : en
Publisher:
Release Date : 1997
Communications On The Move written by Leslie Haddon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Cell phones categories.
Standardized Testing Conditions For Satellite Communications On The Move Sotm Terminals
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Author : Mostafa Alazab Elkhouly
language : en
Publisher:
Release Date : 2018
Standardized Testing Conditions For Satellite Communications On The Move Sotm Terminals written by Mostafa Alazab Elkhouly and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Von Beginn an haben Satelliten Kommunikationsdienste über große Distanzen bereitgestellt. Endgeräte für die mobile Satellitenkommunikation sind mit einer Nachführeinrichtung ausgestattet, um den verwendeten Satelliten bei Bewegung zu verfolgen. Für höchstmöglichen Datendurchsatz und um Störaussendungen zu benachbarten Satelliten zu vermeiden bedarf es akkurater Nachführalgorithmen. Die Prüfung solcher Satcom-On-The-Move (SOTM) Terminals wird dabei zunehmend wichtig, wie Betreiber von Satellitendiensten anhand des negativen Einflusses suboptimaler Geräte auf ihre Infrastruktur bemerken. Herkömmlich werden SOTM-Terminals im Rahmen von Feldtests mit operativen Satelliten geprüft. Solche Tests sind allerdings nicht exakt wiederholbar. Die Reproduzierbarkeit von Tests ist jedoch insbesondere beim Vergleichstest mehrerer Terminals wichtig. Dieser Beitrag widmet sich der Untersuchung eines umfassenden Qualifikationstests von SOTM-Terminals innerhalb einer Laborumgebung, welche Reproduzierbarkeit ermöglicht. Wesentlicher Vorteil der Laborumgebung ist die Möglichkeit, Terminals unter realitätsnahen Bedingungen zu testen - ohne dass reale Satelliten benötigt werden, was die Kosten reduziert. Diese Arbeit behandelt darüber hinaus die Testmethodik in der Fraunhofer-Testanlage "Facility for Over-the-air Research and Testing (FORTE)". Wichtige Leistungsparameter wie Nachführgenauigkeit (Antenna De-pointing) und Nachbarsatellitenstörung (Adjacent Satellite Interference, ASI) können akkurat gemessen und ausgewertet werden. Die verwendete Methodik zur Gewinnung der vorgeschlagenen Profile wird in der Arbeit ebenso behandelt wie Testergebnisse von Ka-Band-SOTM Terminals. Wesentlicher Beitrag dieser Arbeit ist die Entwicklung von Bewegungs- und Abschattungsprofilen für SOTM-Terminaltests. Bewegungsprofilen für die Landmobile und Maritime Umgebungen wurden entwickelt. Für jede Umgebung, zwei Klassen wurden definiert, Klasse A mit Profile die hohe Bewegungsdynamik haben und Klasse B mit Profile die relativ niedrige Bewegungsdynamik haben. Die vorgeschlagenen Bewegungsprofile wurden in der GVF-105 Standard des Global VSAT Forums berücksichtigt. Die Standardisierung solcher Profile ist notwendig, um einen fairen Leistungsvergleich verschiedener Terminals zu garantieren und solche Geräte sicher zu identifizieren, welche Interferenzen im Satellitennetz verursachen. Dies bedeutet im Ergebnis einen Gewinn für die gesamte Satellitenindustrie.
Communication On The Move
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Author : Fiona Leverick
language : en
Publisher:
Release Date : 1994
Communication On The Move written by Fiona Leverick and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Commerce categories.
Ehf Satellite Communications On The Move Experimental Results
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Author :
language : en
Publisher:
Release Date : 2003
Ehf Satellite Communications On The Move Experimental Results written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
This report summarizes the results of experiments conducted with an EHF SATCOM on the move (SOTM) terminal developed to work with LDR MILSTAR. The experiments were designed to measure characteristics of the EHF SOTM propagation channel, yield insight into the performance of an automatic repeat request error control protocol, and assess the pointing performance of the system's antenna positioner. With respect to the propagation experiments, the report contains statistical analyses of the data that yield probability density models for the received signal power, fade and nonfade duration distributions, and estimates of level crossing rates. Discrete models for the EHF SOTM channel are also explored and compared to the measured data. Results from the protocol experiments include packet error rate, throughput efficiency and packet latency as a function of protocol parameters (e.g., packet length) and channel conditions. As with the propagation experiments, the report contains analyses of the antenna pointing data recorded during the positioner experiments that result in statistical models for the LOS error under various terrain conditions.
Multimedia Communications On The Move
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Author : Great Britain. Department of Trade and Industry
language : en
Publisher:
Release Date : 1997
Multimedia Communications On The Move written by Great Britain. Department of Trade and Industry and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Commerce categories.