Reduction of Bit Errors Due to Intertrack Interference Using LLRs of Neighboring Tracks
Reduction of Bit Errors Due to Intertrack Interference Using LLRs of Neighboring Tracks
复制标题
使用相邻磁道的 LLR 减少因磁道间干扰造成的误码
DOI：
10.1109/tmag.2011.2153834
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发表时间：
2011
影响因子：
2.1
通讯作者：
F. Haga
中科院分区：
文献类型：
--
作者：
S. Mita;V. Van;F. Haga
抑制磁道间干扰（ITI）和符号间干扰（ISI）对于实现超过10 Tera比特/英寸2的高密度磁记录至关重要。我们提出了一种新的迭代方法，以减少ITI和ISI所造成的错误，涉及ITI的自适应估计和对数似然比从相邻轨道的信号。这种方法对于解码由位模式媒体和传统媒体记录的信号是有用的。此外，该方法被扩展到解码信号的Voronoi为基础的离散晶粒模型的叠瓦式写记录（SWR），占四个相邻位。对于BPM和SWR，可以消除由于两个相邻磁道偏移约20%而引起的位误差。
Suppressing intertrack interference (ITI) and intersymbol interference (ISI) is crucial for achieving high-density magnetic recording beyond 10 Tera bits/inch2. We propose a novel iterative method for reducing errors caused by ITI and ISI involving the adaptive estimation of ITI and the log likelihood ratios obtained from signals of neighboring tracks. This method is useful for decoding signals recorded by bit-patterned media and conventional media. Moreover, the method is extended to decode signals from the Voronoi-based discrete grain model for shingled write recording (SWR), accounting for four neighboring bits. Bit errors due to both neighboring track shifts of approximately 20% can be canceled for BPM and SWR.