A Low-Latency Simplified Successive Cancellation Decoder for Polar Codes Based on Node Error Probability
A Low-Latency Simplified Successive Cancellation Decoder for Polar Codes Based on Node Error Probability
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DOI：
10.1109/lcomm.2018.2875437
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发表时间：
2018-10
期刊：
影响因子：
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通讯作者：
Shibao Li;Yunqiang Deng;L. Lu;Jianhang Liu;Tingpei Huang
中科院分区：
文献类型：
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作者：
Shibao Li;Yunqiang Deng;L. Lu;Jianhang Liu;Tingpei Huang
为了降低极性码的时延，人们提出了几种译码方法。然而，它们中的大多数都需要译码树中特定的节点结构。因此，它们忽略了一些非结构化节点。为此，我们提出了一种改进的基于节点差错概率的简化逐次相消译码方案来补充结构化方案。通过适当的设计，在加性高斯白噪声信道下的仿真结果表明，该方法在保持误码性能基本不变的情况下，可以有效地降低结构化方案的译码时延。
In order to reduce the latency of polar codes, several decoding methods have been proposed. However, most of them need a particular structure of nodes in the decoding tree. Thus, they ignore some unstructured nodes. To this end, we propose a modified version of the simplified successive cancellation decoder based on node error probability to complement the structured scheme. By a proper design, simulation results in additive white Gaussian noise channel show that the proposed method can efficiently reduce the decoding latency of the structured scheme while keeping the error performance almost unchanged.