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On the Global and Local Decoding of q-Ary SC-LDPC Codes With Moderate Coupling Length
IEEE Communications Letters ( IF 4.1 ) Pub Date : 2021-07-12 , DOI: 10.1109/lcomm.2021.3096273
Mingyang Zhu , Ming Jiang , Chunming Zhao

This letter discusses a special type of ${q}$ -ary spatially coupled low-density parity-check (SC-LDPC) codes with the potential for local decoding (LD). We demonstrate that ${q}$ -ary SC-LDPCL (suffix “L” stands for locality) code ensembles have better decoding thresholds than the corresponding binary ensembles. We also develop local window decoding (LWD) to improve local decoding performance. The ${q}$ -ary codes are constructed from low-order finite fields that guarantees relatively low complexity. The provided examples show that ${q}$ -ary SC-LDPCL codes outperform the corresponding binary codes in both global and local decoding.

中文翻译:

中等耦合长度q-Ary SC-LDPC码的全局和局部解码

这封信讨论了一种特殊类型的 ${q}$ -ary 空间耦合低密度奇偶校验 (SC-LDPC) 码,具有本地解码 (LD) 的潜力。我们证明 ${q}$ -ary SC-LDPCL(后缀“L”代表局部性)代码集成比相应的二进制集成具有更好的解码阈值。我们还开发了局部窗口解码 (LWD) 以提高局部解码性能。这 ${q}$ -ary 代码由低阶有限域构造,保证相对较低的复杂性。提供的例子表明 ${q}$ -ary SC-LDPCL 代码在全局和局部解码方面都优于相应的二进制代码。
更新日期:2021-09-10
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