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Optimal Time-Division of Two-Phase Decode-and-Forward Bidirectional Relaying
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A relay node establishes bidirectional communication between two nodes using a two-phase decode-andforward protocol. In the first phase nodes 1 and 2 transmit their messages to the relay node, which decodes the messages. In the succeeding phase the relay broadcasts a re-encoded message using the network coding idea so that each node can decode the other’s message using its own message as side information. In this work we optimize the time-division between the two phases assuming memoryless Gaussian channels with multiple antennas at the relay node and single antennas at nodes 1 and 2. It shows that the achievable rate region is convex without additional time-sharing between two operating points. The presented equivalent characterization of the achievable rate region simplifies the optimization problem of resource allocation policies.
- Multi-antenna Systems
- Signal Processing
- Information Theory
@inproceedings{OWB08oobr,
author = "Tobias J. Oechtering and Rafael F. Wyrembelski and Holger Boche",
title = "{Optimal Time-Division of Two-Phase Decode-and-Forward Bidirectional Relaying}",
booktitle = "{Proc. IEEE International Symposium on Information Theory and its Applications (ISITA '08)}",
address = "Auckland, New Zealand",
month = dec,
year = "2008",
pages = "829--834",
}
Last modified 18.03.2009 16:44
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