DocumentCode
2711284
Title
Reliability-based data-puncturing hybrid ARQ scheme with LDPC Codes
Author
Xiaoheng Chen ; Xiangdong Jin
Author_Institution
Zhejiang Univ. Hangzhou, Hangzhou
fYear
2007
fDate
11-13 July 2007
Firstpage
29
Lastpage
33
Abstract
We propose an improved data-puncturing hybrid-ARQ scheme for Low-Density Parity-Check (LDPC) codes based on codeword reliability. Incremental redundancy is generated from punctured versions of the original data using the same encoder/decoder pair. Retransmission packet sizes are determined adaptively according to the reliability level of the decoded data. We conduct detailed simulation experiments and compare the proposed scheme with RB-HARQ and DP-HARQ approaches. The RB-DP-HARQ scheme reduces the retransmission times and the feedback channel traffic for NACK signaling with negligible overhead.
Keywords
automatic repeat request; data communication; parity check codes; LDPC codes; NACK signaling; data-puncturing hybrid ARQ scheme; encoder/decoder pair; feedback channel traffic; low-density parity-check codes; Automatic repeat request; Generators; 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.2007.6247589
Filename
6247589
Link To Document