A Simplified Decoding Method of Polar Codes Based on Hypothesis Testing

A Simplified Decoding Method of Polar Codes Based on Hypothesis Testing
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基于假设检验的Polar码简化译码方法

DOI:
10.1109/lcomm.2019.2963645
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发表时间:
2020-03
期刊:
IEEE COMMUNICATIONS LETTERS
影响因子:
--
通讯作者:
Gao Chenyu
Gao Chenyu
中科院分区:
其他
文献类型:
--
作者:
Sun He;Liu Rongke;Gao Chenyu

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该文提出了一种简化的极化码逐次抵消译码算法,该算法利用冻结比特中的先验信息,采用硬判决规则,以提高译码性能。考虑到节点可靠性的差异,设计了一种基于假设检验的策略来选择可靠的非结构化节点进行硬决策。然后,可靠节点的解码提出的硬判决方法没有串行递归,减少了解码延迟。仿真结果表明,与现有方法相比,该方法在解码延迟和纠错能力方面具有优势。
In this letter, a simplified successive cancellation decoding algorithm of polar codes is proposed, where a hard decision rule is adopted by exploiting the prior information in frozen bits for better decoding performance. Considering the difference of the node reliability, a hypothesis-testing-based strategy is designed to select reliable unstructured nodes for hard decision. Then the reliable nodes are decoded by the proposed hard decision method without serial recursion, which reduces the decoding latency. Simulation results show the advantages of the proposed method in terms of the decoding latency and error-correction ability compared with the existing methods.
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