THE RELATIONSHIP OF MEDIUM NOISE TO SYSTEM ERROR RATE IN A PRML CHANNEL

被引:8
作者
FITZPATRICK, J [1 ]
BERTRAM, HN [1 ]
CHE, XD [1 ]
BARBOSA, LC [1 ]
LIN, GH [1 ]
机构
[1] UNIV CALIF SAN DIEGO,CTR MAGNET RECORDING RES,LA JOLLA,CA 92093
关键词
D O I
10.1109/20.333967
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
High density disk drive systems utilize fine grain polycrystalline thin films as a storage medium. These films exhibit noise that is pattern dependent and has appreciable magnitude near the center of each recorded transition. A model for error rates in a PRML channel is presented to explore how variations in medium noise parameters effect system performance. The channel is assumed to be characterized by both pattern dependent nonstationary medium noise and white Gaussian electronic and/or head noise. Results are presented in terms of both error rate and sensitivity of error rate to changes in medium parameters.
引用
收藏
页码:3990 / 3995
页数:6
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