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首页> 外文期刊>Magnetics, IEEE Transactions on >Coding and Detection for Channels With Written-In Errors and Inter-Symbol Interference
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Coding and Detection for Channels With Written-In Errors and Inter-Symbol Interference

机译：具有写入错误和符号间干扰的信道的编码和检测

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摘要

Written-in errors (WIEs), which include written-in substitutions, insertions, and deletions, as well as 2-D inter-symbol interference (2-D-ISI), form one of the major challenges for the new emerging bit-patterned media recording technology. Coding and detection scheme with performance/complexity tradeoffs is expected to address such a challenge. In this paper, a new channel model with WIEs and ISI (WIE-ISI) is presented, and the embedded marker code scheme (EMCS) with Bahl–Cocke–Jelinek–Raviv (BCJR) detector is employed to perform channel detection. By investigating the effect of ISI on the WIE-ISI channel considering BCJR detector, a virtual written-in substitution probability is introduced and a new synchronization algorithm with written-in substitution detection (SA-WSD) is developed. The EMCS employing the proposed SA-WSD demonstrates better error correction performance than that of the original SA. Furthermore, the SA-WSD is found to be robust to small estimation errors in the written-in substitution probability.
机译：写入错误（WIE）包括写入的替换，插入和删除以及2-D符号间干扰（2-D-ISI），这是新出现的位的主要挑战之一，图案化媒体录制技术。具有性能/复杂度折衷的编码和检测方案有望解决这一挑战。本文提出了一种具有WIE和ISI的新信道模型（WIE-ISI），并采用带有Bahl–Cocke–Jelinek–Raviv（BCJR）检测器的嵌入式标记代码方案（EMCS）进行信道检测。通过研究考虑BCJR检测器的ISI对WIE-ISI信道的影响，引入了虚拟写入替换概率，并开发了一种新的带有写入替换检测的同步算法（SA-WSD）。采用建议的SA-WSD的EMCS具有比原始SA更好的纠错性能。此外，发现SA-WSD对写入替换概率中的较小估计误差具有鲁棒性。

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