D.M. de Andrade (Germany)
Aircraft, GSM, satellite, delay, voice quality
GSM Onboard Aircraft system is the currently standardizing solution to provide GSM connectivity in flights. Basically a picocell installed in the cabin will provide the GSM coverage and a satellite link will keep the connection between the aircraft and the existing terrestrial mobile network. In this work the arising issues of such a system are addressed. The system architecture is investigated, particularly the satellite interface; parameters as delay, jitter and packet error rate, are measured and analyzed for two mounted test scenarios using a system demonstrator, a real satellite link and a satellite simulator. Finally a subjective test of voice quality – Mean Opinion Score – is performed. The result provides a valuable set of data and parameters suited for improving future onboard communications systems.
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