A Robust Relay Selection Strategy for Cooperative Systems with Outdated CSI
In this paper, we consider a cooperative system based on relay selection in a scenario where the available channel state information (CSI) is subject to delays. In order to exploit the selection diversity gains of the system while providing robustness against CSI inaccuracy, we propose a robust rela...
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Published in | VTC Spring 2009 - IEEE 69th Vehicular Technology Conference pp. 1 - 5 |
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Main Authors | , , , |
Format | Conference Proceeding |
Language | English |
Published |
IEEE
01.04.2009
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Subjects | |
Online Access | Get full text |
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Summary: | In this paper, we consider a cooperative system based on relay selection in a scenario where the available channel state information (CSI) is subject to delays. In order to exploit the selection diversity gains of the system while providing robustness against CSI inaccuracy, we propose a robust relay selection strategy based on a minimum mean square error (MMSE) Bayesian estimator. As shown in the paper, the proposed robust strategy provides significant gains in scenarios with different levels of CSI inaccuracy. |
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ISSN: | 1550-2252 |
DOI: | 10.1109/VETECS.2009.5073336 |