Iterative linear MMSE transmit and receive strategies for cellular MIMO networks

Authors:
Ralf Bendlin;Yih-Fang Huang;Michel T. Ivrlač;Josef A. Nossek
Affiliations:
Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN;Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN;Institute for Circuit Theory and Signal Processing, Technische Universität München, Munich, Germany;Institute for Circuit Theory and Signal Processing, Technische Universität München, Munich, Germany
Venue:
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Year:
2009

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Abstract

We present two iterative algorithms that jointly optimize the transmit and receive filters with respect to the mean square error (MSE) in the downlink of a cellular multi-user multiple input single output (MISO) system for linear precoding. One algorithm is gradient-based and allows for cooperation among base stations, the second algorithm does not allow for cooperation between base stations and regards the base stations as competing players in a game. Furthermore, we propose a "smart" initialization which outperforms all other approaches we analyze without any need for iteration.