Generation of Rate-Compatible LDPC Codes Based on Linear Transformation

Author

Chen, Ningxia ; Chang, Yongyu ; Yang, Dacheng

Author_Institution

Wireless Commun. Res. Center, Beijing Univ. of Posts & Telecommun., China

fYear

2006

fDate

10-11 Oct. 2006

Firstpage

311

Lastpage

314

Abstract

Practical communication systems require coding rates to be compatible. This report presents a new method to design rate-compatible low-density parity-check (LDPC) codes. The method is based on linear transformation and different from the existing methods. Decomposing rows of the parity-check matrices can produce the parity-check matrices for lower rates. It can also maintain low error floors for the codes at all rates, and the codes can be decoded conveniently and efficiently. It can achieve high throughput in HARQ with FEC system.

Keywords

automatic repeat request; matrix algebra; parity check codes; FEC system; Gaussian approximation; HARQ; bipartite graph; coding rates; degree distribution; density evolution; hybrid automatic repeat request; linear transformation; low error floors; low-density parity-check codes; parity-check matrices; rate-compatible LDPC codes; Bipartite graph; Decoding; Design methodology; Forward error correction; Gaussian approximation; Hardware; Matrix decomposition; Parity check codes; Throughput; Wireless communication; Density Evolution (DE); Gaussian Approximation (GA); HARQ; LDPC codes; bipartite graph; degree distribution; extending; rate-compatible;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Electronics, 2006. ICCE '06. First International Conference on

Conference_Location

Hanoi

Print_ISBN

1-4244-0568-8

Electronic_ISBN

1-4244-0569-6

Type

conf

DOI

10.1109/CCE.2006.350816

Filename

4156467