Enhanced belief propagation decoding of polar codes through concatenation
Enhanced belief propagation decoding of polar codes through concatenation
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DOI：
10.1109/isit.2014.6875382
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发表时间：
2014
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影响因子：
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通讯作者：
Jing Guo;Minghai Qin;A. G. Fàbregas;P. Siegel
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文献类型：
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作者：
Jing Guo;Minghai Qin;A. G. Fàbregas;P. Siegel
有限长度极化码的比特信道不是完全极化的，并且这样的比特信道的一部分既不是完全“无噪声”也不是完全“有噪声”。通过对这些中间信道使用外部低密度奇偶校验码，我们展示了如何提高整个级联极化码的置信传播（BP）解码的性能。一个简单的示例报告了相对于传统BP解码器的Eb /N 0的0.3dB的改进。
The bit-channels of finite-length polar codes are not fully polarized, and a proportion of such bit-channels are neither completely “noiseless” nor completely “noisy”. By using an outer low-density parity-check code for these intermediate channels, we show how the performance of belief propagation (BP) decoding of the overall concatenated polar code can be improved. A simple example reports an improvement in Eb /N0 of 0.3 dB with respect to the conventional BP decoder.