Joint Self-Iterating Equalization and Detection for Two-Dimensional Intersymbol-Interference Channels

Chen, Yiming and Srinivasa, Shayan Garani (2013) Joint Self-Iterating Equalization and Detection for Two-Dimensional Intersymbol-Interference Channels. In: IEEE TRANSACTIONS ON COMMUNICATIONS, 61 (8). pp. 3219-3230.

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Abstract

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.

Item Type:	Journal Article
Publication:	IEEE TRANSACTIONS ON COMMUNICATIONS
Publisher:	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Additional Information:	Copyright for this article belongs to THE IEEE
Keywords:	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
Department/Centre:	Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited:	01 Oct 2013 11:03
Last Modified:	01 Oct 2013 11:03
URI:	http://eprints.iisc.ac.in/id/eprint/47497

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