We consider the use of multiple co-located satellites to improve the spectral efficiency of broadcast transmissions. In particular, we assume that two satellites transmit on overlapping geographical coverage areas, with overlapping frequencies. We first describe the theoretical framework based on network information theory and, in particular, on the theory for multiple access channels. The application to different scenarios will be then considered, including the bandlimited additive white Gaussian noise channel with average power constraint and different models for the nonlinear satellite channel. The comparison with the adoption of frequency division multiplexing (FDM) is also provided. The main conclusion is that a strategy based on overlapped signals is convenient with respect to FDM, although it requires the adoption of a multiuser detection strategy at the receiver.

On the use of multiple satellites to improve the spectral efficiency of broadcast transmissions / Ugolini, Alessandro; Piemontese, Amina; Modenini, Andrea; Colavolpe, Giulio. - STAMPA. - (2014), pp. 218-225. ((Intervento presentato al convegno Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC), 2014 7th tenutosi a Livorno (Italy) nel September 2014 [10.1109/ASMS-SPSC.2014.6934547].

On the use of multiple satellites to improve the spectral efficiency of broadcast transmissions

UGOLINI, Alessandro;PIEMONTESE, Amina;MODENINI, Andrea;COLAVOLPE, Giulio
2014

Abstract

We consider the use of multiple co-located satellites to improve the spectral efficiency of broadcast transmissions. In particular, we assume that two satellites transmit on overlapping geographical coverage areas, with overlapping frequencies. We first describe the theoretical framework based on network information theory and, in particular, on the theory for multiple access channels. The application to different scenarios will be then considered, including the bandlimited additive white Gaussian noise channel with average power constraint and different models for the nonlinear satellite channel. The comparison with the adoption of frequency division multiplexing (FDM) is also provided. The main conclusion is that a strategy based on overlapped signals is convenient with respect to FDM, although it requires the adoption of a multiuser detection strategy at the receiver.
978-1-4799-5893-1
978-1-4799-5893-1
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11381/2783176
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