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On the Use of Multiple Satellites to Improve the Spectral Efficiency of Broadcast Transmissions

Andrea Modenini ; Alessandro Ugolini ; Amina Piemontese (Institutionen för signaler och system, Kommunikationssystem) ; Giulio Colavolpe
IEEE transactions on broadcasting (0018-9316). Vol. 61 (2015), 4, p. 590-602.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Co-located satellites, frequency division multiplexing, multiple access channel, spectral efficiency.



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Denna post skapades 2016-02-03. Senast ändrad 2016-07-20.
CPL Pubid: 231618

 

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