Communications and networking over satellites: SatNEx experimental activities and testbeds

Abstract

SUMMARYOne of the aims of the SatNEx (Satellite Network of Excellence, http://www.satnex.de) European project is to provide the scientific community that operates on satellite communications with measurement campaign results and evaluation tools, in order to support research activities that investigate problems in satellite communications at different levels of the OSI stack. In fact, the research activities developed in SatNEx address the most relevant aspects of satellite communications, such as channel modulation and coding schemes, access strategies, advanced networking, end-to-end quality of service, transport performance, delay tolerant networks, and new applications. Even if SatNEx is mainly devoted to satellite communications, integration of satellite and terrestrial wireless segments has also been taken into account. This paper presents the results obtained in the specific research activity devoted to trials and testbeds developed during the SatNEx project. The high number of authors of this paper is an indication of the strong collaborative work sustained, the numerous measurement campaigns, and the complexity in developing integrated testbeds.

Performance analysis and simulation of various burst time plan generation methods in broadband satellite multimedia system

“…For rural and mountain areas, satellites are often the only economic means of providing people with internet access and multimedia application. There have been already many BSM systems in operation and projects in this research 1 field [1] . At the same time new generation BSM systems such as KA-sat, Viasat-1, and Jupiter are currently under plan.…”