Memory efficient EMS decoding for non-binary LDPC codes

Author

Leixin Zhou ; Jin Sha ; Yun Chen ; Zhongfeng Wang

Author_Institution

Sch. of Electron. Sci. & Eng., Nanjing Univ., Nanjing, China

fYear

2013

fDate

19-23 May 2013

Firstpage

1336

Lastpage

1339

Abstract

Non-binary low-density parity-check (NB-LDPC) codes are an extension of binary LDPC codes with significantly better performance when the code length is moderate. Previously, forward-backward schemes are used to implement check node processing, which need large amount of memory. In this paper, a novel approach-TCL-EMS is proposed for NB-LDPC decoding. Compared to original EMS decoding algorithm, the memory efficiency is improved and the average number of iterations is reduced significantly. Also, the overall decoder architecture is proposed.

Keywords

decoding; parity check codes; NB-LDPC decoding; TCL-EMS approach; check node processing; code length; decoder architecture; forward-backward scheme; iteration number; memory efficiency; memory-efficient EMS decoding algorithm; nonbinary LDPC codes; nonbinary low-density parity-check codes; truncated column layered extended min-sum decoding scheme; Algorithm design and analysis; Decoding; Iterative decoding; Memory management; Quantization (signal);

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2013 IEEE International Symposium on

Conference_Location

Beijing

ISSN

0271-4302

Print_ISBN

978-1-4673-5760-9

Type

conf

DOI

10.1109/ISCAS.2013.6572101

Filename

6572101