Bit-patterned media recording (BPMR) is a candidate technology that extends the density to up to 4 Tb/in2 to handle large amounts of data. However, in BPMR systems, the major challenge is two-dimensional (2-D) interference, which includes intersymbol interference from the down-track direction and intertrack interference from the across-track direction. To combat 2-D interference, it is natural to consider a 2-D Viterbi detection scheme. Since the complexity of pure 2-D Viterbi detection is quite high, we propose a series of two 1-D Viterbi detectors, which is based on new 2-D partial response (PR) target modeling for the BPMR channel. The use of new 2-D PR target model and the two serial 1-D Viterbi detection scheme ensures that the complexity is greatly reduced compared to 2-D Viterbi detection and the bit error rate performance is improved.

中文翻译：

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使用新的二维部分响应目标建模进行位模式媒体记录的一维串行检测


位模式媒体记录 (BPMR) 是一种候选技术，可将密度扩展至高达 4 Tb/in2 以处理大量数据。然而，在BPMR系统中，主要的挑战是二维（2-D）干扰，其中包括来自下行磁道方向的码间干扰和来自跨磁道方向的磁道间干扰。为了对抗二维干扰，自然要考虑二维维特比检测方案。由于纯 2-D Viterbi 检测的复杂性相当高，我们提出了一系列两个 1-D Viterbi 检测器，它基于 BPMR 通道的新 2-D 部分响应 (PR) 目标建模。采用新的2-D PR目标模型和两个串行1-D Viterbi检测方案，保证了相比2-D Viterbi检测复杂度大大降低，误码率性能得到改善。