MMSE-based design of scaled and offset BP-based decoding algorithms on the fast Rayleigh fading channel

Author

Zheng, He ; Hu, Hanying

Author_Institution

Dept. of Commun. Eng., Inf. Sci. & Technol. Inst., Zhengzhou

fYear

2006

fDate

21-24 May 2006

Abstract

In this paper, we use the minimum mean square error (MMSE) criterion to design the scaled and offset belief propagation (BP)-based decoding algorithms for short low-density parity-check (LDPC) codes on the fast Rayleigh fading channel. Based on the MMSE criterion, the theoretical formulas and numerical calculations on the optimum factors for these two improved BP-based algorithms are provided. The simulation results for several short (Chen et al., 2005 and Gallager, 1962) regular LDPC codes on the fast Rayleigh fading channel demonstrate that the scaled and offset BP-based algorithms with our proposed factors can achieve the performance better than that of the BP algorithm

Keywords

Rayleigh channels; decoding; least mean squares methods; parity check codes; BP-based decoding algorithms; LDPC codes; MMSE-based design; belief propagation based decoding algorithms; fast Rayleigh fading channel; minimum mean square error criterion; optimum factors; short low-density parity-check codes; AWGN; Algorithm design and analysis; Design engineering; Fading; Helium; Iterative algorithms; Iterative decoding; Parity check codes; Rayleigh channels; Sparse matrices;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Conference_Location

Island of Kos

Print_ISBN

0-7803-9389-9

Type

conf

DOI

10.1109/ISCAS.2006.1693021

Filename

1693021