Design of turbo decoder based on Min-Sum decoding algorithm of LDPC code

Author

Wang, Pengjun ; Yi, Fanglong

Author_Institution

Inst. of Circuits & Syst., Ningbo Univ., Ningbo, China

fYear

2010

fDate

6-9 Dec. 2010

Firstpage

430

Lastpage

433

Abstract

Turbo code has been used by multiple communication standards due to its performance near Shannon limit. However, its decoding algorithm is complicated. Through the research on Turbo code, a novel design of Turbo decoder is presented in this paper. Turbo code is decoded by the Min-Sum decoding algorithm of LDPC code, which is a low complicated decoding algorithm. Moreover, messages are stored compressively, and the check-to-variable messages and the variable-to-check messages are stored alternately. This design reduced the required memory significantly. Finally, the decoder is simulated by ModelSim SE6.0 and the simulation results show that the decoder has high decoding speed.

Keywords

information theory; parity check codes; telecommunication standards; turbo codes; LDPC code; ModelSim SE6.0; Shannon limit; check-to-variable message; high decoding speed; min-sum decoding algorithm; multiple communication standard; turbo code; turbo decoder; variable-to-check message; Algorithm design and analysis; Decoding; Iterative decoding; Turbo codes; Decoder; LDPC; Min-Sum; Turbo;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (APCCAS), 2010 IEEE Asia Pacific Conference on

Conference_Location

Kuala Lumpur

Print_ISBN

978-1-4244-7454-7

Type

conf

DOI

10.1109/APCCAS.2010.5774882

Filename

5774882