Title :
Design of close-to-capacity constrained codes for multi-level optical recording
Author :
Kumar, Ashwin ; Immink, Kees A Schouhamer
Author_Institution :
Electr. & Comput. Eng. Dept., Nat. Univ. of Singapore, Singapore
fDate :
4/1/2009 12:00:00 AM
Abstract :
We report a new method for designing (M,d, k) constrained codes for use in multi-level optical recording channels. The method allow us to design practical codes, which have simple encoder tables and decoders having fixed window length. The codes presented here for the d = 1 and d = 2 cases, achieve higher storage densities than previously reported codes, and come within 0.3 - 0.7% of capacity.
Keywords :
channel capacity; codes; channel capacity; close-to-capacity constrained codes; multi-level optical recording channels; runlength-limited sequences; Channel capacity; Decoding; Design methodology; Disk recording; Electron optics; Equations; Modulation coding; Optical design; Optical modulation; Optical recording; Multi-level optical recording, runlength-limited sequences, channel capacity, (M,d, k) sequences;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2009.04.041138
