An analytical method for MMSE MIMO turbo equalizer EXIT chart computation

Author

Kansanen, Kimmo ; Matsumoto, Tad

Author_Institution

Norwegian Univ. of Sci. & Technol.

Volume

6

Issue

1

fYear

2007

Firstpage

59

Lastpage

63

Abstract

A frequency domain soft-interference canceling minimum mean-square error (MMSE) turbo equalizer is studied. A computationally efficient method for computing extrinsic information transfer (EXIT) function of the equalizer is proposed. The method is based on the Gaussian approximation for the equalizer output and it produces an approximate EXIT chart in a fraction of computational load compared to previous numerical methods. The accuracy of the method is verified for both single-input single-output (SISO) and multiple-input multiple output (MIMO) channels

Keywords

Gaussian processes; MIMO communication; equalisers; frequency-domain analysis; interference suppression; least mean squares methods; EXIT chart computation; Gaussian approximation; MMSE MIMO turbo equalizer; analytical method; computational load; computationally efficient method; equalizer output; extrinsic information transfer function; frequency domain soft-interference canceling; minimum mean-square error turbo equalizer; single-input single-output channel; Convergence; Decision feedback equalizers; Frequency domain analysis; Frequency-selective fading channels; Gaussian approximation; Interference cancellation; Iterative decoding; Iterative methods; MIMO; Nonlinear filters;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2007.05172

Filename

4114253