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arXiv 1107.4965cs.ITmath.IT
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用于q元信道的极化码,q=2^r

Polar codes for q-ary channels, q=2^r

Woomyoung Park, Alexander Barg

摘要:

本文研究了输入字母大小为q= 2^r,r = 2,3,.利用Arikan的极化核H_2,我们证明了极化过程中产生的虚信道收敛到容量为1,2,…的q元信道,r比特,并且总传输速率接近信道的对称容量。这导致用于q元信道的显式传输方案。使用连续消除的解码的错误概率表现为exp(-N^α),其中N是码长,α是小于0.5的任何常数。

英文摘要:

We study polarization for nonbinary channels with input alphabet of size q=2^r,r=2,3,... Using Arikan's polarizing kernel H_2, we prove that the virtual channels that arise in the process of polarization converge to q-ary channels with capacity 1,2,...,r bits, and that the total transmission rate approaches the symmetric capacity of the channel. This leads to an explicit transmission scheme for q-ary channels. The error probability of decoding using successive cancellation behaves as exp(-N^α), where N is the code length and α is any constant less than 0.5.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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