A New Design Method of Multi-Rate Quasi-Cyclic LDPC Codes

Author

Lin, Zhichu ; Yang, Zhixing ; Pan, Changyong

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing

Volume

2

fYear

2006

fDate

25-28 June 2006

Firstpage

707

Lastpage

711

Abstract

A new method called fractional row combination is proposed to design a group of multi-rate quasi-cyclic LDPC codes in this paper. Unlike the original row combination method, it guarantees all the codes under different rates have concentrated check-node degree distributions, hence better performance under iterative decoding. Moreover, a combinatorial method based on BIBD is applied to our design. Together with fractional row combination, a family of multi-rate quasi-cyclic LDPC codes can be constructed. A low-complexity architecture of the universal decoder for all rates is also introduced

Keywords

block codes; combinatorial mathematics; cyclic codes; iterative decoding; parity check codes; BIBD; balanced incomplete block design; combinatorial method; fractional row combination; iterative decoding; low density parity check; multirate quasi-cyclic LDPC code; universal decoder; Degradation; Design engineering; Design methodology; Error correction codes; Iterative decoding; Matrices; Parity check codes; Quality of service;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems Proceedings, 2006 International Conference on

Conference_Location

Guilin

Print_ISBN

0-7803-9584-0

Electronic_ISBN

0-7803-9585-9

Type

conf

DOI

10.1109/ICCCAS.2006.284753

Filename

4063994