Influence of Degree Distribution of Irregular LDPC Codes on HARQ Performance

Author

Xu, Chengxin ; Chang, Yongyu ; Yang, Dacheng

Author_Institution

Wireless Theor. & Technol. Lab., Beijing Univ. of Posts & Telecommun., Beijing

fYear

2008

fDate

11-14 May 2008

Firstpage

759

Lastpage

762

Abstract

In this paper, a progressive hybrid automatic repeat request (HARQ) scheme on degree distribution for irregular low-density parity-check (LDPC) codes is proposed. In this scheme, lower degree nodes are retransmitted. During the process of choosing nodes for retransmission, not only degree distribution but also unequal error protection (UEP) property and iterative decoding process of irregular LDPC codes are considered. Compared with initial Degree Distribution Based HARQ (DDB-HARQ), the proposed scheme has better performance.

Keywords

automatic repeat request; error correction codes; iterative decoding; parity check codes; HARQ scheme; hybrid automatic repeat request; initial degree distribution; irregular LDPC codes; iterative decoding process; low-density parity-check codes; unequal error protection property; AWGN; Automatic repeat request; Error correction codes; Iterative decoding; Parity check codes; Performance analysis; Pollution; Redundancy; Sum product algorithm; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2008. VTC Spring 2008. IEEE

Conference_Location

Singapore

ISSN

1550-2252

Print_ISBN

978-1-4244-1644-8

Electronic_ISBN

1550-2252

Type

conf

DOI

10.1109/VETECS.2008.166

Filename

4525722