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Row-column soft-decision feedback algorithm for two-dimensional intersymbol interference

delete2007-07-01
delete53
PRE
AI
T
Taikun Cheng *
B
Benjamin J. Belzer
K
Krishnamoorthy Sivakumar
DOI:10.1109/LSP.2006.891329delete
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Abstract

Abstract

En 中文
We present a novel iterative row-column soft decision feedback algorithm (IRCSDFA) for detection of binary images corrupted by 2-D intersymbol interference and additive white Gaussian noise. The algorithm exchanges weighted soft information between row and column maximum a posteriori (MAP) detectors. 7 Each MAP detector exploits soft-decision feedback from previously processed rows or columns. The new algorithm gains about 0.3 dB over the previously best published results for the 2 x 2 averaging mask. For a non-separable 3 x 3 mask, the IRCSDFA gains 0.8 dB over a previous soft-input/soft-output iterative algorithm which decomposes the 2-D convolution into 1-D row and column operations.
Keywords:
iterative algorithm
soft decision feedback
2-D intersymbol interference
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Journal

IEEE Signal Processing Magazine cover
IEEE Signal Processing Magazine
IF:
9.6
Papers:
1.1W
Citations:
1.7W

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