论文标题
带有子块区域的空间耦合代码：关节有限长度 - 膜片设计方法
Spatially Coupled Codes with Sub-Block Locality: Joint Finite Length-Asymptotic Design Approach
论文作者
论文摘要
具有子块局部性的SC-LDPC代码可以在本地解码，该子块的级别比完整的代码块小得多，从而可以快速访问编码信息。同一代码也可以使用整个代码块在全球范围内进行解码，以提高数据可靠性。在本文中，我们从有限态度和渐近镜中探讨了此类代码的分析和设计。这种混合方法很少应用于设计SC代码，但有益于同时优化本地和全局性能的代码图。我们提出的框架包括两个步骤：1）设计阈值和周期计数的本地代码，以及2）设计本地代码的耦合，以在全球设计中最佳循环计数。
SC-LDPC codes with sub-block locality can be decoded locally at the level of sub-blocks that are much smaller than the full code block, thus providing fast access to the coded information. The same code can also be decoded globally using the entire code block, for increased data reliability. In this paper, we pursue the analysis and design of such codes from both finite-length and asymptotic lenses. This mixed approach has rarely been applied in designing SC codes, but it is beneficial for optimizing code graphs for local and global performance simultaneously. Our proposed framework consists of two steps: 1) designing the local code for both threshold and cycle counts, and 2) designing the coupling of local codes for best cycle count in the global design.
