NDLI: Finite-length extrinsic information transfer analysis and design of protograph low-density parity-check codes for ultra-high-density magnetic recording channels

Content Provider	IET Digital Library
Author	Fang, Yi Hsiung Han, Guojun Guan, Yong Liang Bi, Guoan Lau, Francis C. M. Kong, Lingjun
Abstract	The authors study the performance of protograph low-density parity-check (LDPC) codes over two-dimensional (2D) intersymbol interference (ISI) channels in this study. To begin with, the authors propose a modified version of finite-length (FL) extrinsic information transfer (EXIT) algorithm so as to facilitate the convergence analysis of protograph codes. Exploiting the FL-EXIT analyses, the authors observe that the protograph codes optimised for 1D ISI channels, e.g. the 1D-ISI protograph code, cannot maintain their advantages in the 2D-ISI scenarios. To address this problem, the authors develop a simple design scheme for constructing a family of rate-compatible improved protograph (RCIP) codes particularly for 2D-ISI channels, which not only outperform the 1D-ISI protograph code, but also are superior to the regular column-weight-3 code and optimised irregular LDPC codes in terms of the convergence speed and error performance. More importantly, such RCIP codes benefit from relatively lower error-floor as well as linear encoding and fast decoding. Thanks to these advantages, the proposed RCIP codes stand out as better alternatives in comparison with other error-correction codes for ultra-high-density data storage systems.
Starting Page	1303
Ending Page	1311
Page Count	9
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 11, Jul (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2015.1233
Journal	IET Communications
Publisher Date	2016-07-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Code Data Storage System Error Correction Code Error Performance EXIT Algorithm Finite Length Finite Length Extrinsic Information Transfer Analysis FL Extrinsic Information Transfer Intersymbol Interference ISI Channel LDPC Code Magnetic Recording Parity Check Code Protograph Code Protograph Low Density Parity Check Code Regular Column Weight-3 Code Ultra High Density Magnetic Recording Channel
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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