This paper presents a node-reliability based cyclic redundancy check (CRC)-aided successive cancellation list (NRB CA-SCL) polar decoder architecture, where node reliability is used to determine the number of expanding paths, and a priority-based sorter is devised so as to reduce the number of sorting cycles. In order to reduce the effort required for sorting by the node processor, the expanding segments are generated using off-line flipping patterns. We also propose a post-processing scheme that improves the error-rate performance for the NRB CA-SCL decoders. The proposed techniques are demonstrated by implementing (1024, 512) polar decoders. Compared to other state-of-the-art CA-SCL decoders, the proposed decoder, when the post-processing technique is not included, achieves a better area efficiency. When the post-processing technique is included, the proposed list-16 decoder achieves an area efficiency that is almost 2.5 times greater compared to the latest list-32 CA-SCL decoder, as well as a similar error-rate performance.

中文翻译：

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结合后处理的基于节点可靠性的CRC辅助逐次取消列表极性解码器架构

本文提出了一种基于节点可靠性的循环冗余校验 (CRC) 辅助连续取消列表 (NRB CA-SCL) 极性解码器架构，其中节点可靠性用于确定扩展路径的数量，并设计了一种基于优先级的排序器以减少分拣循环次数。为了减少节点处理器排序所需的工作量，使用离线翻转模式生成扩展段。我们还提出了一种后处理方案，可以提高 NRB CA-SCL 解码器的错误率性能。通过实施 (1024, 512) 极性解码器来演示所提出的技术。与其他最先进的 CA-SCL 解码器相比，当不包括后处理技术时，所提出的解码器实现了更好的区域效率。当包含后处理技术时，