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Spatial MIMO decision feedback equalizer operating on quantized data

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3 Author(s)
Amine Mezghani ; Institute for Circuit Theory and Signal Processing, Munich University of Technology, 80290, Germany ; Mohamed-Seifeddine Khoufi ; Josef A. Nossek

We study the joint optimization of the quantizer and the spatial decision feedback equalizer (DFE) for the flat multi-input multi-output (MIMO) channel with quantized outputs. Our design is based on a minimum mean square error (MMSE) approach, taking into account the effects of quantization. Our derivation does not make use of the assumption of uncorrelated white quantization errors and considers the correlations of the quantization error with the other signals of the system. Through simulation, we compare the new DFE to the conventional spatial DFE operating on quantized data in terms of uncoded BER.

Published in:

2008 IEEE International Conference on Acoustics, Speech and Signal Processing

Date of Conference:

March 31 2008-April 4 2008