Nonbinary LDPC coding and iterative decoding system with 2-D equalizer for TDMR R/W channel using discrete Voronoi model
Nonbinary LDPC coding and iterative decoding system with 2-D equalizer for TDMR R/W channel using discrete Voronoi model
复制标题
使用离散 Voronoi 模型的 TDMR R/W 通道具有二维均衡器的非二进制 LDPC 编码和迭代解码系统
DOI：
10.1109/tmag.2012.2220532
复制
发表时间：
2013
影响因子：
2.1
通讯作者：
H. Muraoka
中科院分区：
文献类型：
--
作者：
Y. Nakamura;Y. Okamoto;H. Osawa;H. Aoi;H. Muraoka
利用铺瓦式磁记录技术实现二维磁记录是实现超高面密度最有前途的技术之一。在离散Voronoi模型上，我们建立了具有非磁性晶界的离散颗粒介质模型，并考虑了颗粒间交换场和静磁相互作用场的简单写入过程。本文在TDMR规格为4.12 Tb/in2的条件下，采用读写过程的R/W信道模型，通过计算机仿真得到了基于非二进制低密度奇偶校验（LDPC）码的二维有限脉冲响应均衡器（2D-FIRE）在伽罗瓦域GF(q)上的迭代译码系统的误码率（BER）性能，并与一维FIRE （1D-FIRE）进行了比较。结果表明，2D-FIRE的非二进制LDPC编码迭代译码系统的误码率性能优于1D-FIRE。
A 2-D magnetic recording (TDMR) by shingled magnetic recording (SMR) is one of the most promising technologies for realizing ultra-high areal densities. We have developed the discretized granular medium model with nonmagnetic grain boundaries and the simple writing process considering intergranular exchange fields and magnetostatic interaction fields between grains on the discrete Voronoi model for TDMR. In this paper, the bit-error rate (BER) performance of the iterative decoding system using a nonbinary low-density parity-check (LDPC) code over Galois field GF(q) with the 2-D finite-impulse-response equalizer (2D-FIRE) is obtained via computer simulation using an R/W channel model employing the writing process under TDMR specifications of 4.12 Tb/in2, and it is compared to that with the 1-D FIRE (1D-FIRE). The results show that the BER performance of the nonbinary LDPC coding and iterative decoding system with the 2D-FIRE is better than that with the 1D-FIRE.