A thresholding algorithm for improved split-row decoding method of irregular LDPC codes

Author

El Alami, Rachid ; Qjidaa, Hassan ; Mehdaoui, Youness ; Mrabti, Mostafa

Author_Institution

Fac. of Sci. Dhar El Mehraz, Dept. of Phys., LESSI Lab., Sidi Mohamed Ben Abdellah Univ., Fez, Morocco

fYear

2015

fDate

25-26 March 2015

Firstpage

1

Lastpage

5

Abstract

In this paper, we propose a thresholding algorithm to improve Split-Row decoding method of irregular LDPC codes, with maintaining the same level of complexity. We present in this paper a full description of this method and its benefits for various row weight and length code word. In this context, we have performed an implementation on MATLAB of an irregular LDPC codes with different code word and code rate. Simulation results over an additive white Gaussian channel show that the error performance of high row-weight codes with thresholding algorithm is within 0.1-0.2 dB of the normalized Min-Sum algorithm. The study result shows that the thresholding algorithm outperforms original Split Row of irregular codes.

Keywords

Gaussian channels; channel coding; decoding; error statistics; parity check codes; Split Row decoding method improvement; additive white Gaussian channel; code rate; code word; high row-weight codes error performance; irregular LDPC codes; normalized minsum algorithm; thresholding algorithm; Bit error rate; Decoding; Parity check codes; Partitioning algorithms; Program processors; Simulation; Wires; Low-density-parity-check codes; bit error rate; normalized MinSum; split-row threshold; standard split-row;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Systems and Computer Vision (ISCV), 2015

Conference_Location

Fez

Print_ISBN

978-1-4799-7510-5

Type

conf

DOI

10.1109/ISACV.2015.7106166

Filename

7106166