Dc-free run-length-limited codes for magnetic recording

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In this paper, a method to design high-efficiency codes with combined run-length and de-null constraints is presented. Using the new method, two new dc-free (1, 7) codes, with rates of 12/20 and 16/26, were developed. The code efficiencies are 89.31 and 91.6%, respectively. The proposed approach is more general than the technique used to design the existing dc-free d = 1 code. The performances of the new codes are also compared with that of the rate 8/10 dc-free (0, 4) code. The minimum distance analysis and the bit error rate simulation both show that while at low densities the proposed codes exhibit performance degradation compared to the higher rate (0, 4) code, they perform better than the latter as density increases, despite the code rate disadvantage.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
1997-01
Language
English
Article Type
Article
Keywords

CHANNEL

Citation

IEEE TRANSACTIONS ON MAGNETICS, v.33, no.1, pp.874 - 2

ISSN
0018-9464
URI
http://hdl.handle.net/10203/75652
Appears in Collection
EE-Journal Papers(저널논문)
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