Title :
Modified maximum likelihood sequence estimation in a simple partial erasure model
Author :
Lee, Inkyu ; Yamauchi, Takashi ; Cioff, John M.
Author_Institution :
Inf. Syst. Lab., Stanford Univ., CA, USA
Abstract :
A simple partial erasure model caused by the effective reduction of a transition width in a magnetic recording system is presented. This model predicts the nonlinear distortion accurately at high recording densities. This paper proposes the modified maximum-likelihood sequence detector (MLSD) incorporating this nonlinear model. Simulation shows that the modified maximum likelihood sequence detector outperforms the normal Viterbi detection in a nonlinearity-dominant channel
Keywords :
magnetic recording; maximum likelihood detection; Viterbi detection; high recording densities; magnetic recording system; modified maximum likelihood sequence detector; modified maximum likelihood sequence estimation; nonlinear distortion; nonlinear model; nonlinearity-dominant channel; simple partial erasure model; simulation; transition width reduction; Detectors; Information systems; Laboratories; Magnetic films; Magnetic materials; Magnetic recording; Maximum likelihood detection; Maximum likelihood estimation; Nonlinear distortion; Predictive models;
Conference_Titel :
Communications, 1994. ICC '94, SUPERCOMM/ICC '94, Conference Record, 'Serving Humanity Through Communications.' IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-1825-0
DOI :
10.1109/ICC.1994.369051
