On Detection Method for Soft Iterative Decoding in the Presence of Impulsive Interference

Author

Dimanche, Vincent ; Goupil, Alban ; Clavier, Laurent ; Gelle, Guillaume

Author_Institution

CReSTIC, Univ. of Reims Champagne-Ardenne, Reims, France

Volume

18

Issue

6

fYear

2014

fDate

41791

Firstpage

945

Lastpage

948

Abstract

This paper deals with the performance improvement of soft iterative decoders in impulsive interference modeled by additive noise. In case of α-stable noise, the inputs of the belief propagation decoder are too complex to compute. We propose to use an approximation of the log likelihood ratio in an impulsive environment. Even with this simplification, we show that the performance stays close to the one obtained using the true probability density function. Moreover, the robustness of our solution against the parameter estimation is investigated.

Keywords

approximation theory; impulse noise; iterative decoding; parameter estimation; probability; radiofrequency interference; α-stable noise; additive noise; approximation; belief propagation decoder; detection method; impulsive environment; impulsive interference; log likelihood ratio; parameter estimation; probability density function; soft iterative decoding; Approximation methods; Bit error rate; Decoding; Interference; Iterative decoding; Noise; Robustness; $alpha$-stable; LDPC codes; Turbo codes; impulsive interference; impulsive noise; soft iterative decoding;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2014.2320921

Filename

6809154