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arXiv 1201.1065cs.ITmath.IT
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基于乘积码的新型磁记录通道纠错系统

A Novel Error Correcting System Based on Product Codes for Future Magnetic Recording Channels

Vo Tam Van, Seiichi Mita

摘要:

提出了一种基于二进制低密度奇偶检验(LDPC)码和二进制里德所罗门(RS)码镜像的高密度磁记录乘积码的构造方法。此外,提出了两种新的算法来解码的存在下的AWGN错误和分散的硬错误(SHE)的代码。仿真结果表明,在比特出错率(bER)约为10^-8的情况下,与相同长度和码率的RS码的硬判决译码器相比,该方法可使误码性能提高约1.9dB。对于包括随机噪声和SHE的混合误差信道,信噪比(SNR)被设置为5dB,并且随机生成150至400个SHE。该乘积码的误码性能比等价随机LDPC码或LDPC码与RS码的串行级联有显著改善。

英文摘要:

We propose a novel construction of product codes for high-density magnetic recording based on binary low-density parity check (LDPC) codes and binary image of Reed Solomon (RS) codes. Moreover, two novel algorithms are proposed to decode the codes in the presence of both AWGN errors and scattered hard errors (SHEs). Simulation results show that at a bit error rate (bER) of approximately 10^-8, our method allows improving the error performance by approximately 1.9dB compared with that of a hard decision decoder of RS codes of the same length and code rate. For the mixed error channel including random noises and SHEs, the signal-to-noise ratio (SNR) is set at 5dB and 150 to 400 SHEs are randomly generated. The bit error performance of the proposed product code shows a significant improvement over that of equivalent random LDPC codes or serial concatenation of LDPC and RS codes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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