Title :
Serially concatenated coding for PR system with LDPC and PC codes
Author :
Saito, H. ; Okamoto, Y. ; Osawa, H.
Author_Institution :
Fac. of Eng., Ehime Univ., Japan
Abstract :
Summary form only given In this work, the coded partial response (PR) system based on serially concatenated error control codes is described. The component codes of the concatenated codes are a low density parity check (LDPC) code and a punctured convolutional (PC) code. In our system, the LDPC code is used as an inner code and is an important random code which can approach Shannon´s capacity limit. A practical decoding method of the LDPC code is known as the sum-product decoding algorithm or belief propagation. Furthermore, the PC code is used for an outer code and can enhance the minimum squared Euclidean distance for the coded PR system. The sequence of the PC code has a single parity check capability for the concatenated coding.
Keywords :
concatenated codes; convolutional codes; decoding; digital magnetic recording; error correction codes; error statistics; parity check codes; partial response channels; BER performance; belief propagation decoding method; bit error rate performance; coded PR system; coded partial response system; inner code; longitudinal magnetic recording; low density parity check code; outer code; punctured convolutional code; random code; serially concatenated error control codes; single parity check capability; sum-product decoding algorithm; Bit error rate; Code standards; Decoding; Optical wavelength conversion; Parity check codes;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1000870
