An iterative receiver for quantized MIMO systems

Author

Mezghani, Amine ; Rouatbi, Mehdi ; Nossek, Josef A.

Author_Institution

Inst. for Circuit Theor. & Signal Process., Munich Univ. of Technol., Munich, Germany

fYear

2012

fDate

25-28 March 2012

Firstpage

1049

Lastpage

1052

Abstract

We study the joint optimization of the quantizer and the iterative Decision Feedback Equalizer (IDE) 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 provided IDE to the conventional spatial DFE operating on quantized data in terms of uncoded BER.

Keywords

MIMO communication; equalisers; error statistics; radio receivers; wireless channels; BER; DFE; IDE; MIMO channel; MMSE approach; decision feedback equalization; iterative decision equalization; iterative decision feedback equalizer; iterative receiver; minimum mean square error approach; multiinput multioutput channel; quantization error; quantized MIMO systems; Bit error rate; Covariance matrix; Decision feedback equalizers; MIMO; Quantization; Receivers; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrotechnical Conference (MELECON), 2012 16th IEEE Mediterranean

Conference_Location

Yasmine Hammamet

ISSN

2158-8473

Print_ISBN

978-1-4673-0782-6

Type

conf

DOI

10.1109/MELCON.2012.6196608

Filename

6196608