Title :
The 22 GHz resource sharing experiment of the DAVID mission
Author :
Paraboni, A. ; Capsoni, C. ; Bosisio, A. ; Ferrari, M. ; Matricciani, E. ; Ruggieri, M. ; Salomè, A. ; Bonifazi, C.
Author_Institution :
Politecnico di Milano, Italy
fDate :
10/1/2002 12:00:00 AM
Abstract :
The resource sharing experiment (RSE) of the DAVID (DAta and Video Interactive Distribution) multiexperiment mission of the Italian Space Agency (ASI) is described. The experiment envisages adaptively varying the robustness of signals down-transmitted, to a set (16) of Earth terminals by acting on their coding and spreading. During the DAVID satellite passes, each terminal determines autonomously its signal-to-noise ratio (SNR) and transmits it to a central station which, by using this information, works out the parameters for the global system optimization and indicates, in real time, to the terminals which code and despreading factor they must utilize to receive the part of the signal addressed to them.
Keywords :
multimedia communication; optimisation; satellite communication; telecommunication terminals; 22 GHz; DAVID mission; Earth terminals; coding; data and video interactive distribution; despreading factor; global system optimization; resource sharing experiment; robustness; signal-to-noise ratio; spreading; Attenuation; Costs; Frequency; Real time systems; Resource management; Robustness; Satellite broadcasting; Satellite ground stations; Space missions; Video sharing;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.2002.1145762
