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Causal Channel Inversion for MIMO ISI Systems: Equalization Error Modeling and Robustness
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The problem of constructing the channel pseudoinverse in a frequency selective, multiple-input multiple-output scenario becomes intricate if causality and robustness constraints are imposed. In this paper, the receive filters of interest will be the ones that either minimize the noise enhancement, or improve robustness, under a certain limit on the equalization error with respect to the perfect channel inversion. In the cases when no exact inverse exist, the equalization error modeling will be performed by upper-bounding the system norms, and the similar concept can be employed for modeling the noise enhancement factor and the robustness. It is shown how both problems can be transformed into standard semidefinite programming problems, with a possibility of applying efficient numerical optimization methods.
- Multi-antenna Systems
- Signal Processing
@inproceedings{VB06ccif,
author = "Nikola Vucic and Holger Boche",
title = "{Causal Channel Inversion for MIMO ISI Systems: Equalization Error Modeling and Robustness}",
booktitle = "{5th International IMCAS Symposium on Mathematical Modelling (MATHMOD 2006)}",
address = "Vienna, Austria",
month = feb,
year = "2006",
}
Last modified 11.09.2009 12:51
Fokusseminar 02.11.2012
