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On Suboptimum Component Decoding for Product Codes

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5 Author(s)
Loncar, M. ; Dept. of Inf. Technol., Lund Univ. ; Johannesson, R. ; Sayir, J. ; Bocharova, I.
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The performance and convergence behavior of the iterative schemes for decoding two-dimensional product codes are investigated. The decoding trajectories of the extrinsic and the a posteriori information are used as a main tool for predicting and explaining the behavior of the iterative decoding process. The component-wise optimal BCJR decoder is compared to the suboptimal max-log-MAP decoder and the list-based BEAST-APP decoder in terms of convergence and bit-error-rate performance. The results are illustrated by examples, which show that the BEAST-APP decoder achieves near-BCJR performance with significantly lower complexity

Published in:

Information Theory, 2006 IEEE International Symposium on

Date of Conference:

9-14 July 2006