Rateless transmission of polar codes with information unequal error protection

Rateless transmission of polar codes with information unequal error protection
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带信息不等差错保护的极性码无速率传输

DOI:
10.1049/iet-com.2018.6194
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发表时间:
2019-04
期刊:
影响因子:
1.6
通讯作者:
成风毅
成风毅
中科院分区:
计算机科学4区
文献类型:
--
作者:
梁豪;刘爱军;张应宪;成风毅

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在这项研究中,提出了一种无速率传输方案与信息不等错误保护(UEP)使用极化码。该方案适用于时变信道中的传输,并能满足不同可靠性要求信息的UEP目标。首先,通过扩展极化矩阵和基于重要性的打孔设计未知信道的无速率传输。特别地,在无速率传输的基础上,提出了一种保证UEP性能的全编码增益的算法。此外,考虑到灵活的连续消除列表(SCL)解码与UEP相结合,他们进一步提出了一种具有降低复杂度的尺寸自适应SCL解码方案。数值仿真表明,他们提出的基于极化码的无速率方案在未知信道中可以获得良好的UEP性能,并且复杂度较低。
In this study, a rateless transmission scheme with information unequal error protection (UEP) is proposed by using polar codes. The proposed scheme is suitable for transmissions in time-varying channels, as well as pursues UEP goal of information with different reliability requirements. Firstly, the authors design rateless transmission for an unknown channel via extending polarisation matrix and importance-based puncturing. In particular, an algorithm ensuring full coding gain for UEP performance is proposed on the basis of rateless transmission. Moreover, in consideration of combining flexible successive cancellation list (SCL) decoding with UEP, they further present a size-adapted SCL decoding scheme with reduced complexity. Numerical simulation shows that their proposed rateless scheme based on polar codes could achieve good UEP performance with low complexity in unknown channels.
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