Lookup NU author(s): Zhen Mei
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© 1997-2012 IEEE. In this letter, an iterative analysis method based on an extrinsic information transfer (EXIT) chart and quantized density evolution is developed for low-density parity-check (LDPC) codes over channels with symmetric alpha-stable (SαS) impulsive noise. Based on the proposed scheme, a method to optimize ensembles of LDPC codes under different levels of impulsiveness is presented and it is shown that the information rates of our optimized code ensembles can achieve 95.4% and 94.7% of the channel capacity for α =1.8 and α =1, respectively. Furthermore, experimental results, including EXIT curves, thresholds, and bit-error rate performance of optimized code ensembles, are obtained to verify the effectiveness of our analysis.
Author(s): Dai B, Liu R, Hou Y, Zhao L, Mei Z
Publication type: Article
Publication status: Published
Journal: IEEE Communications Letters
Print publication date: 01/03/2017
Online publication date: 06/12/2016
Acceptance date: 27/11/2016
ISSN (print): 1089-7798
ISSN (electronic): 1558-2558
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