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Capacity analysis of multibeam joint decoding over composite satellite channels

Dimitrios Christopoulos ; Symeon Chatzinotas ; Michail Matthaiou (Institutionen för signaler och system, Signalbehandling) ; Björn E. Ottersten
45th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2011;Pacific Grove, CA;6 November 2011through9 November 2011 (10586393). p. 1795-1799. (2011)
[Konferensbidrag, refereegranskat]

The throughput of current multibeam satellite systems is limited by self interference. Interference mitigation techniques have the potential to significantly increase the spectral efficiency of these satellite communication systems. The present contribution investigates the ergodic capacity of the return link of a multibeam satellite system, where full frequency reuse is employed and user signals are jointly processed at the gateway. The proposed model incorporates correlated satellite antennas over Rician channels which represent some inherent characteristics of satellite communications. Additionally, the effects of shadowing caused by user mobility, are modeled via the lognormal distribution. Hence, a composite Rician/lognormal fading channel with fully correlated receive antennas is considered. For this channel, a new lower bound on the ergodic capacity is analytically deduced and verified through simulations.



Denna post skapades 2012-06-07. Senast ändrad 2013-08-27.
CPL Pubid: 158633

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Signalbehandling

Ämnesområden

Elektroteknik och elektronik

Chalmers infrastruktur