Title :
Power spectral density of multitrack (O,G/I) codes
Author :
Vasic, Bane ; Milenkovic, Olgica ; McLaughlin, Steve
Author_Institution :
Dept. of Electr. Eng., Rochester Inst. of Technol., NY
fDate :
4/24/1997 12:00:00 AM
Abstract :
A new method for evaluating the power spectral density of multitrack constrained sequences is demonstrated for multitrack (O,G/I) constraints. (O,G/I) constrained sequences are used in magnetic recording systems that employ partial response maximum likelihood (PRML) signalling. Using the proposed approach, the number of states in a directed graph representing the given (O,G/I) constraint is reduced remarkably so that the power spectral density can be easily calculated
Keywords :
directed graphs; magnetic recording; maximum likelihood detection; partial response channels; PRML signalling; directed graph; magnetic recording systems; multitrack (O,G/I) codes; multitrack constrained sequences; partial response maximum likelihood; power spectral density;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970519
