Reliability-based subpacket transmission for hybrid ARQ with LDPC codes

Author

Jia Minli ; He Zunwen ; Kuang Jingming ; Fei Zesong

Author_Institution

Beijing Inst. of Technol., Beijing

fYear

2007

fDate

11-13 July 2007

Firstpage

80

Lastpage

84

Abstract

An irregular LDPC coded sub-packet hybrid ARQ (HARQ) scheme based on instantaneous reliability is presented for selection and retransmission. Reliability-based (RB) HARQ was initially proposed for Turbo coded case with iterative decoding, whereas for irregular LDPC coded scenario, a degree distribution based (DDB) retransmission strategy was presented that the nodes with large degree have higher retransmission priority in [10]. In this paper, we focus on the improved approach to segment and select sub-packets according to instantaneous reliability for potential throughput performance enhancement. Numeral results with link level simulation demonstrate that a significant throughput gain is realized by setting suitable length of sub-packets for reliability based retransmission than DDB scheme.

Keywords

automatic repeat request; mobile communication; parity check codes; telecommunication network reliability; degree distribution retransmission strategy; hybrid ARQ schem; irregular LDPC coded subpacket HARQ scheme; reliability-based subpacket transmission; subpacket segmentation; subpacket selection; wireless mobile data transmissions; Automatic repeat request; Reliability;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems, 2007. ICCCAS 2007. International Conference on

Conference_Location

Kokura

Print_ISBN

978-1-4244-1473-4

Type

conf

DOI

10.1109/ICCCAS.2007.6247578

Filename

6247578