LOCO Codes: Lexicographically-Ordered Constrained Codes
LOCO Codes: Lexicographically-Ordered Constrained Codes
复制标题
LOCO 代码:按字典顺序排序的约束代码
DOI:
10.1109/tit.2019.2943244
复制
发表时间:
2020
影响因子:
2.5
通讯作者:
Calderbank, Robert
中科院分区:
文献类型:
--
作者:
Hareedy, Ahmed;Calderbank, Robert
Line codes make it possible to mitigate interference, to prevent short pulses, and to generate streams of bipolar signals with no direct-current (DC) power content through balancing. They find application in magnetic recording (MR) devices, in Flash devices, in optical recording devices, and in some computer standards. This paper introduces a new family of fixed-length, binary constrained codes, named lexicographically-ordered constrained codes (LOCO codes), for bipolar non-return-to-zero signaling. LOCO codes are capacity-achieving, the lexicographic indexing enables simple, practical encoding and decoding, and this simplicity is demonstrated through analysis of circuit complexity. LOCO codes are easy to balance, and their inherent symmetry minimizes the rate loss with respect to unbalanced codes having the same constraints. Furthermore, LOCO codes that forbid certain patterns can be used to alleviate inter-symbol interference in MR systems and inter-cell interference in Flash systems. Numerical results demonstrate a gain of up to 10% in rate achieved by LOCO codes with respect to other practical constrained codes, including run-length-limited codes, designed for the same purpose. Simulation results suggest that it is possible to achieve a channel density gain of about 20% in MR systems by using a LOCO code to encode only the parity bits, limiting the rate loss, of a low-density parity-check code before writing.
登录
查看更多内容
影响因子:
2.5
作者:
Ahmed Hareedy;R. Wu;L. Dolecek
通讯作者:
Ahmed Hareedy;R. Wu;L. Dolecek
DOI:
10.1109/49.124481
发表时间:
1992
期刊:
IEEE J. Sel. Areas Commun.
影响因子:
--
作者:
D. Howe;H. Hilden
通讯作者:
H. Hilden
DOI:
10.1109/isit.2018.8437351
发表时间:
2018
期刊:
2018 IEEE International Symposium on Information Theory (ISIT)
影响因子:
--
作者:
R. Roth;P. Siegel
通讯作者:
P. Siegel
DOI:
10.1109/18.623139
发表时间:
1997
期刊:
IEEE Trans. Inf. Theory
影响因子:
--
作者:
Kees A. Schouhamer Immink
通讯作者:
Kees A. Schouhamer Immink
DOI:
10.1109/lcomm.2018.2806960
发表时间:
2018
期刊:
IEEE Communications Letters
影响因子:
--
作者:
K. Harada;Nobuhiro Maeto;Akihiro Yamazaki;Mikhail Amelyushkin
通讯作者:
Mikhail Amelyushkin