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Joint Self-Iterating Equalization and Detection for Two-Dimensional Intersymbol-Interference Channels
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DOI：10.1109/TCOMM.2013.070213.120852.png)
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摘要
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We develop several novel signal detection algorithms for two-dimensional intersymbol-interference channels. The contribution of the paper is two-fold: (1) We extend the one-dimensional maximum a-posteriori (MAP) detection algorithm to operate over multiple rows and columns in an iterative manner. We study the performance vs. complexity trade-offs for various algorithmic options ranging from single row/column non-iterative detection to a multi-row/column iterative scheme and analyze the performance of the algorithm. (2) We develop a self-iterating 2-D linear minimum mean-squared based equalizer by extending the 1-D linear equalizer framework, and present an analysis of the algorithm. The iterative multi-row/column detector and the self-iterating equalizer are further connected together within a turbo framework. We analyze the combined 2-D iterative equalization and detection engine through analysis and simulations. The performance of the overall equalizer and detector is near MAP estimate with tractable complexity, and beats the Marrow Wolf detector by about at least 0.8 dB over certain 2-D ISI channels. The coded performance indicates about 8 dB of significant SNR gain over the uncoded 2-D equalizer-detector system.
Keyword:
Two-dimensional intersymbol-interference detection
soft decision feedback
row-column algorithm
maximum alpha-posteriori probability algorithm
two-dimensional MMSE linear equalizer
self-iterating
joint 2-D equalization and detection
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IF:
8.3
论文数:
1.2W
被引数:
3.6W
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