Title :
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
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);
Conference_Titel :
Circuits and Systems (ISCAS), 2013 IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-5760-9
DOI :
10.1109/ISCAS.2013.6572101
