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首页> 外文会议>International Conference on Renewable Energies for Developing Countries >Multi-track Recording Systems Using Non-binary Error Correction Coding Schemes for Bit-patterned Magnetic Recording
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Multi-track Recording Systems Using Non-binary Error Correction Coding Schemes for Bit-patterned Magnetic Recording

机译：使用非二进制纠错编码方案的多轨记录系统，用于位模式磁记录

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摘要

In this paper, a new multi-track recording system based on two-dimensional (2D) signal processing schemes is proposed for bit-patterned magnetic recording (BPMR). This system uses a non-binary error-correcting code and a modulation code with 2D run-length limited constraints. The signal processing scheme in the proposed system gets mixed readback signal sequences from the parallel adjacent tracks using a single reading head simultaneously. These readback signal sequences are equalized to a frequency response given by a desired 2D generalized partial response (GPR) system for BPMR. In decoding, a single sequence detector using maximum a posteriori (MAP) estimation combined with pattern-dependent noise-predictive detection is able to detect the equalized GPR signal sequences for recorded data written in a group of parallel adjacent tracks. Using computer simulation, this decoding scheme improves the signalto- noise ratio compared to the conventional MAP detection under media noise.
机译：本文提出了一种新的基于二维（2D）信号处理方案的多轨记录系统，用于位模式磁记录（BPMR）。该系统使用具有二进制游程长度受限约束的非二进制纠错码和调制码。所提出的系统中的信号处理方案同时使用单个读取头从平行的相邻磁道获得混合的回读信号序列。这些回读信号序列等于由BPMR的所需2D广义部分响应（GPR）系统给出的频率响应。在解码中，使用最大后验（MAP）估计与模式相关的噪声预测检测相结合的单个序列检测器能够检测写入一组平行相邻磁道中的记录数据的均衡GPR信号序列。与计算机在媒体噪声下的常规MAP检测相比，使用计算机仿真，该解码方案可提高信噪比。

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