Irregular progressive edge-growth Tanner graphs
Xiao-Yu Hu, Evangelos Eleftheriou, et al.
International ITG Conference on Source and Channel Coding 2002
The performance of low-density parity-check (LDPC) codes serially concatenated with generalized partial response channels is investigated. Various soft-input/soft-output detection schemes suitable for use in iterative detection/decoding systems are described. A low-complexity near-optimal detection algorithm that incorporates soft-input reliability information and generates soft-output reliability information is presented. A reduced-complexity algorithm for decoding LDPC codes is described. Simulation results on the performance of high-rate LDPC codes on generalized PR channels at various recording densities are presented. These results indicate that a judicious selection of the inner detector target polynomial and the choice of a good LDPC code are important in optimizing the performance of the overall recording system. Furthermore, the results also show that iterative detection/decoding schemes using LDPC codes can outperform hard-decision decoding of Reed-Solomon codes by over 2 dB at a sector error rate of 10-3.
Xiao-Yu Hu, Evangelos Eleftheriou, et al.
International ITG Conference on Source and Channel Coding 2002
Teddy Loeliger, Peter Bachtold, et al.
ESSCIRC 2002
Roy D. Cideciyan, Evangelos Eleftheriou
ISIT 2003
Xiao-Yu Hu, Evangelos Eleftheriou, et al.
GLOBECOM 2001