Title :
Studies of non-linearities in PRML channel
Author :
Guixi, Liu ; Wanhai, Yang
Author_Institution :
Sch. of Electron. Eng., Xidian Univ., Xi´´an, China
fDate :
6/21/1905 12:00:00 AM
Abstract :
Magnetoresistive (MR) heads and partial response with maximum likelihood (PRML) detection channel are widely used in high density magnetic recording systems. The PRML is known to be sensitive to the non-linearities. The non-linearities will dramatically degrade the performance of the PRML channel. Here, we study the nonlinear transition shift (NLTS) and the MR head non-linearity. In addition, the extracted dipulse method is used to simulate the NLTS and MR head non-linearity.
Keywords :
magnetic heads; magnetic recording; magnetoresistive devices; maximum likelihood detection; PRML channel; extracted dipulse method; high density magnetic recording systems; magnetoresistive heads; maximum likelihood detection channel; nonlinear transition shift; nonlinearities; partial response; performance; Degradation; Linearity; Magnetic flux; Magnetic heads; Magnetic recording; Magnetic separation; Magnetoresistance; Maximum likelihood detection; Saturation magnetization; Signal to noise ratio;
Conference_Titel :
Computational Electromagnetics and Its Applications, 1999. Proceedings. (ICCEA '99) 1999 International Conference on
Print_ISBN :
0-7803-5802-3
DOI :
10.1109/ICCEA.1999.825139
