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http://dx.doi.org/10.7840/kics.2013.38A.9.744

Performance of Run-length Limited Coded Parity of Soft LDPC Code for Perpendicular Magnetic Recording Channel  

Kim, Jinyoung (숭실대학교 정보통신전자공학부 정보저장 및 통신 연구실)
Lee, Jaejin (숭실대학교 정보통신전자공학부 정보저장 및 통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.38A, no.9, 2013 , pp. 744-749 More about this Journal
Abstract
We propose soft user data input on LDPC codes with parity encoded by the (1, 7) run length limited (RLL) code for perpendicular magnetic recording channel. The user data are encoded by maximum transition run (MTR) (3;11) code. In order to minimize the loss of code rate, the (1, 7) RLL code only encode the parity of LDPC. Also, to increase performance, we propose only user data part applied soft output Viterbi algorithm (SOVA). The performance using the SOVA showed good performance lower than 26 dB. In contrast, it showed worse performance high than 26 dB. This is because of incorrect soft information by high jitter noise and two different input types for LDPC decoder.
Keywords
high density recording channel; low density parity check codes; maximum transition run codes; perpendicular magnetic channel; run-length limited codes;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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