Dependence of error patterns and BER performance on write pre-compensation in GPRML channels |
| |
Authors: | Y Okamoto T Bushisue Y Kurihara Y Nakamura H Osawa H Muraoka Y Nakamura |
| |
Institution: | 1. Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan;2. RIEC, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan |
| |
Abstract: | Nonlinear transition shift (NLTS) influences the performance of PRML channels in perpendicular magnetic recording. For NLTS, it is thought that write pre-compensation is useful to write the transition at the intended position. In this paper, we study the influence of NLTS on the BER performance of GPRML channels and show the appropriate amount of pre-compensation for GPRML channels both with and without a post-processor (PP) to achieve better BER performance. The results show that the widening the shortest bit length by NLTS brings the BER improvement to GPRML channel and the write pre-compensation is useful for a GPRML channel with PP. |
| |
Keywords: | 85 70 Li |
本文献已被 ScienceDirect 等数据库收录! |
|