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A Scaling Law to Predict the Finite-Length Performance of Spatially-Coupled LDPC Codes

机译:预测空间耦合LDPC码有限长度性能的定标律

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摘要

Spatially-coupled low-density parity-check (SC-LDPC) codes are known to have excellent asymptotic properties. Much less is known regarding their finite-length performance. We propose a scaling law to predict the error probability of finite-length spatially coupled code ensembles when transmission takes place over the binary erasure channel. We discuss how the parameters of the scaling law are connected to fundamental quantities appearing in the asymptotic analysis of these ensembles and we verify that the predictions of the scaling law fit well to the data derived from simulations over a wide range of parameters. The ultimate goal of this line of research is to develop analytic tools for the design of SC-LDPC codes under practical constraints.
机译:众所周知,空间耦合的低密度奇偶校验(SC-LDPC)码具有出色的渐近特性。关于它们的有限长度性能知之甚少。我们提出了一个缩放定律,以预测在二进制擦除信道上发生传输时有限长度的空间耦合代码集合的错误概率。我们讨论了定标定律的参数如何与这些集合的渐近分析中出现的基本量相关联,并且我们验证了定标定律的预测很好地适合于从广泛参数范围内的模拟得出的数据。研究的最终目的是开发在实际约束下用于SC-LDPC码设计的分析工具。

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