DocumentCode
2266919
Title
Improved min-sum decoding algorithms for irregular LDPC codes
Author
Chen, Jinghu ; Tanner, R. Michael ; Jones, Christopher ; Li, Yan
Author_Institution
Dept. of Comput. Sci., Illinois Univ., Chicago, IL
fYear
2005
fDate
4-9 Sept. 2005
Firstpage
449
Lastpage
453
Abstract
In this paper, we apply two improved min-sum algorithms, the normalized and offset min-sum algorithms, to the decoding of irregular LDPC codes. We show that the behavior of the two algorithms in decoding irregular LDPC codes is different from that in decoding regular LDPC codes, due to the existence of bit nodes of degree two. We analyze and give explanations to the difference, and propose approaches to improve the performance of the two algorithms
Keywords
decoding; parity check codes; bit nodes; low-density parity-check codes; min-sum decoding algorithms; AWGN channels; Algorithm design and analysis; Computer science; Decoding; Degradation; Inference algorithms; Parity check codes; Performance analysis; Quantization; Signal to noise ratio;
fLanguage
English
Publisher
ieee
Conference_Titel
Information Theory, 2005. ISIT 2005. Proceedings. International Symposium on
Conference_Location
Adelaide, SA
Print_ISBN
0-7803-9151-9
Type
conf
DOI
10.1109/ISIT.2005.1523374
Filename
1523374
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