A dynamic normalization technique for decoding LDPC codes

Author

Liao, Yen-Chin ; Lin, Chien-Ching ; Liu, Chih-Wei ; Chang, Hsie-Chia

Author_Institution

Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

fYear

2005

fDate

2-4 Nov. 2005

Firstpage

768

Lastpage

772

Abstract

In this paper, a dynamic normalization technique is proposed to approximate the nonlinear operation in decoding LDPC codes. The criterion in determining the normalization factor is also presented with theoretical analysis. The proposed method improves the approximation accuracy as well as the error performance of min-sum algorithm. Furthermore, the hardware implementation benefits from a simplified normalization scheme, leading to reductions in complexity and implementation loss.

Keywords

decoding; matrix algebra; parity check codes; LDPC code decoding; complexity reductions; dynamic normalization technique; error performance; hardware implementation; implementation loss; min-sum algorithm; nonlinear operation; normalization factor; AWGN; Additive white noise; Approximation algorithms; Block codes; Error correction codes; Hardware; Iterative algorithms; Iterative decoding; Parity check codes; Partitioning algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Systems Design and Implementation, 2005. IEEE Workshop on

ISSN

1520-6130

Print_ISBN

0-7803-9333-3

Type

conf

DOI

10.1109/SIPS.2005.1579968

Filename

1579968

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3080786