On the Use of Multiple Satellites to Improve the Spectral Efficiency of Broadcast Transmissions
Artikel i vetenskaplig tidskrift, 2015

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 and with the Alamouti space-time block coding is also provided. The main conclusion is that a strategy based on overlapped signals is the most convenient in the case of no power unbalance, although it requires the adoption of a multiuser detection strategy at the receiver.

multiple access channel

Co-located satellites

spectral efficiency.

frequency division multiplexing

Författare

Andrea Modenini

Universita degli Studi di Parma

ESTEC - European Space Research and Technology Centre

Alessandro Ugolini

Universita degli Studi di Parma

Amina Piemontese

Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Giulio Colavolpe

Universita degli Studi di Parma

IEEE Transactions on Broadcasting

0018-9316 (ISSN)

Vol. 61 590-602 7271014

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/TBC.2015.2470395