A Novel Design of Spatially Coupled LDPC Codes for Sliding Window Decoding
A Novel Design of Spatially Coupled LDPC Codes for Sliding Window Decoding
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DOI：
10.1109/isit44484.2020.9173961
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发表时间：
2020-06
期刊：
影响因子：
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通讯作者：
Min Zhu;David G. M. Mitchell;M. Lentmaier;D. Costello
中科院分区：
文献类型：
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作者：
Min Zhu;David G. M. Mitchell;M. Lentmaier;D. Costello
我们介绍了一种新的设计空间耦合的低密度奇偶校验码，以减少大帧长度或流媒体应用的低延迟滑动窗口解码中的错误传播的影响。具体来说，我们采用减少度检查节点间隔整个耦合链，这有允许解码器恢复错误突发的效果。一个简化的分析所提出的代码的误块率（BLER），使我们能够预测不同的位置减少度检查的耦合链中的效果。仿真结果支持的有益效果的新的代码设计的整体误块率性能。
We introduce a novel design of spatially coupled low density parity check codes in order to reduce the effects of error propagation in low-latency sliding window decoding for large frame lengths or streaming applications. Specifically, we employ reduced-degree check nodes spaced throughout the coupling chain, which have the effect of allowing the decoder to recover from error bursts. A simplified analysis of the block error rate (BLER) of the proposed codes is presented that allows us to predict the effect of different placements of reduced-degree checks in the coupling chain. Simulation results supporting the beneficial effect of the new code design on the overall BLER performance are included.