Cooperative relay-broadcast channels with causal channel state information

Authors:
Reza Khosravi-Farsani;Bahareh Akhbari;Mahtab Mirrnohseni;Mohammad Reza Aref
Affiliations:
Information Systems and Security Lab, Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran;Information Systems and Security Lab, Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran;Information Systems and Security Lab, Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran;Information Systems and Security Lab, Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran
Venue:
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
Year:
2009

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Abstract

In this paper, we consider partially and fully cooperative state-dependent relay broadcast channels with perfect causal Channel State Information (CSI). For these two channels, we study three different situations: 1) both the source and the relay nodes have access to perfect CSI, 2) perfect CSI is only known to the relay nodes, 3) perfect CSI is only available at the source node. In each situation we obtain the capacity region for a degraded version of the channel. Our work subsumes previously obtained results for the degraded broadcast and relay channels with perfect causal CSI.