Practical Design and Decoding of Parallel Concatenated Structure for Systematic Polar Codes

Practical Design and Decoding of Parallel Concatenated Structure for Systematic Polar Codes
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系统极性码并行级联结构的实用设计与译码

DOI:
10.1109/tcomm.2015.2502246
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发表时间:
2016-02
影响因子:
8.3
通讯作者:
Liang Xiaohu
Liang Xiaohu
中科院分区:
计算机科学2区
文献类型:
--
作者:
Zhang Qingshuang;Liu Aijun;Zhang Yingxian;Liang Xiaohu

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提出了一种将多块系统极化码(SPC)和递归系统卷积码(RSC)相结合的并行级联结构,以提高有限长度极化码的性能。首先,我们设计了一个加权迭代译码算法的建议结构,使更好的误比特率性能可以得到。然后,一个深思熟虑的交织器优化的新方案。此后,我们介绍了一种策略来估计的级联码字的最小距离,其中的渐近性能和收敛行为分析阐述。最后,通过仿真评估了所提出的方案的错误性能。结果表明,该方案的性能几乎优于现有的级联极化码,使码更实用。
In this paper, a parallel concatenated structure is proposed to improve the performance of polar codes in finite length in which multiblocks systematic polar codes (SPC) and recursive systematic convolutional codes (RSC) are combined. We first design a weighted iterative decoding algorithm for the proposed structure such that better bit error rate performance can be obtained. Then, a deliberated interleaver is optimized for the new scheme. Thereafter, we introduce a strategy to estimate the minimum distance of the concatenation codeword, where an asymptotic performance and convergence behavior analysis are elaborated. Finally, the error performance of the proposed scheme is evaluated via simulations. The results show that our scheme almost outperforms all the existed concatenation ones using polar codes, making the codes more practical.
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