M-ary runlength limited codes for high density optical recording

Author

McLaughlin, Steven W. ; Earman, Allen M. ; Gerpheide, John M.

Author_Institution

Dept. of Electr. Eng., Rochester Inst. of Technol., NY, USA

fYear

1994

fDate

27 Jun-1 Jul 1994

Firstpage

146

Abstract

New optical recording channels have been developed that support unsaturated, M-ary (M⩾3) signaling. In this paper we consider the analysis and design of M-ary runlength limited codes for such channels. These codes are designed using the state splitting algorithm and have improved minimum squared Euclidean distance over an ordinary Adler-Coppersmith-Hassner code. Comparisons are made with Ungerboeck-style amplitude modulation trellis codes with comparable complexity and in some cases the new codes achieve a coding gain of over 2 dB

Keywords

optical storage; runlength codes; telecommunication channels; M-ary runlength limited codes; Ungerboeck codes; amplitude modulation trellis codes; coding gain; complexity; high density optical recording; minimum squared Euclidean distance; optical recording channels; state splitting algorithm; unsaturated signaling; Algorithm design and analysis; Amplitude modulation; Convolutional codes; Euclidean distance; Interference constraints; Intersymbol interference; Optical recording; Optical saturation; Saturation magnetization; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory, 1994. Proceedings., 1994 IEEE International Symposium on

Conference_Location

Trondheim

Print_ISBN

0-7803-2015-8

Type

conf

DOI

10.1109/ISIT.1994.394829

Filename

394829