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EXIT Chart Aided LDPC Code Design for Symmetric Alpha-Stable Impulsive Noise

Lookup NU author(s): Zhen Mei

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Abstract

© 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.

Publication metadata

Author(s): Dai B, Liu R, Hou Y, Zhao L, Mei Z

Publication type: Article

Publication status: Published

Journal: IEEE Communications Letters

Year: 2017

Volume: 21

Issue: 3

Pages: 464-467

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

Publisher: IEEE

URL: https://doi.org/10.1109/LCOMM.2016.2636178

DOI: 10.1109/LCOMM.2016.2636178

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