Title :
Multilevel Coding with a Class of Decomposable Finite-Geometry LDPC Codes
Author :
Liu, Ya ; Chen, Huifang ; Xie, Lei ; Gao, Ming
Author_Institution :
Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou
Abstract :
This paper proposes a class of decomposable LDPC codes based on finite geometry EG(m, ps) over bandlimited AWGN channel. These LDPC codes defined as the origin LDPC codes are decomposed into a few small LDPC codes as component codes in multilevel coding. It is shown that the origin LDPC codes demand generic M-ary Min-Sum algorithm while the component codes only require a few binary Min-Sum algorithm implementations in multi-stages decoding. The method proposed simplifies the decoding complexity.
Keywords :
AWGN channels; bandlimited communication; decoding; geometry; parity check codes; additive white Gaussian noise; bandlimited AWGN channel; finite-geometry LDPC code; generic M-ary min-sum algorithm; multilevel coding; multistage decoding; AWGN channels; Bandwidth; Euclidean distance; Hamming distance; Information geometry; Information science; Iterative algorithms; Iterative decoding; Modulation coding; Parity check codes;
Conference_Titel :
Circuits and Systems for Communications, 2008. ICCSC 2008. 4th IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1707-0
Electronic_ISBN :
978-1-4244-1708-7
DOI :
10.1109/ICCSC.2008.16
