DocumentCode :
3419991
Title :
Reliability-Based Selective Repeat Hybrid ARQ Protocol on Low Density Parity Check Codes
Author :
Huang, Fugui ; Yi, Xiaoxin ; Wang, Tie
Author_Institution :
Dept. of Radio Commun. ICE, PLA Univ. of Sci. & Technol., Nanjing
fYear :
2006
fDate :
Nov. 29 2006-Dec. 1 2006
Firstpage :
576
Lastpage :
579
Abstract :
In this paper, we propose a RB-SR-HARQ (selective repeat based on reliability) protocol on low density parity check codes, which exploits the estimated bits reliabilities at the output of a decoder to retransmit those unreliable bits. Our scheme improves system performance and minimizes retransmission sizes by only retransmitting those bits which are likely to be in error. We simulate RB-SR-HARQ protocol on low density parity check codes both over AWGN and Rayleigh flat-fading channel. At the same time, we also compare our proposed RB-SR-HARQ protocol with IR (incremental redundancy) HARQ protocol on LDPC codes. The results show that our proposed scheme achieves a lower BER than other schemes both over A WGN and Rayleigh flat-fading channel.
Keywords :
AWGN channels; automatic repeat request; fading channels; parity check codes; reliability; AWGN; HARQ protocol; Rayleigh flat-fading channel; density parity check codes; incremental redundancy; selective repeat based on reliability; selective repeat hybrid ARQ protocol; AWGN; Automatic repeat request; Bit error rate; Decoding; Error correction codes; Ice; Parity check codes; Protocols; Radio communication; Turbo codes;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Artificial Reality and Telexistence--Workshops, 2006. ICAT '06. 16th International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
0-7695-2754-X
Type :
conf
DOI :
10.1109/ICAT.2006.104
Filename :
4089316
Link To Document :
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