A New Low-Complexity Polar Code Construction for BICM Over AWGN Channels

A New Low-Complexity Polar Code Construction for BICM Over AWGN Channels
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AWGN 信道上 BICM 的新型低复杂度极性码构造

DOI:
10.1109/milcom55135.2022.10017798
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发表时间:
2022
期刊:
Proc. IEEE MILCOM
影响因子:
--
通讯作者:
Ochiai Hideki
Ochiai Hideki
中科院分区:
--
文献类型:
--
作者:
Kaneko Masayuki;Ochiai Hideki

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研究了加性白色高斯噪声(AWGN)信道上比特交织编码调制(BICM)传输的极化码构造,并假设采用连续消除(SC)解码。我们考虑的BICM系统和没有比特交织。研究了几种比特交织模式,其中极化码是基于低复杂度高斯近似(GA)或互易信道近似(RCA)设计的,两者最初都是针对二进制输入AWGN信道开发的。针对比特交织的情况,提出了基于比特互信息的设计信噪比自适应方法。另一方面,在没有比特交织的情况下,我们提出了一种基于蒙特-卡罗(MC)方法和GA或RCA的混合结构。它将被证明,没有比特交织的性能优于那些比特交织,在任何情况下,所提出的低复杂度的设计方法可以实现性能媲美高复杂度的全MC方法。
We investigate a polar code construction for bit-interleaved coded modulation (BICM) transmission over an additive white Gaussian noise (AWGN) channel, assuming successive cancellation (SC) decoding. We consider the BICM systems with and without bit interleaving. Several bit interleaving patterns are investigated, where the polar codes are designed based on low-complexity Gaussian approximation (GA) or reciprocal channel approximation (RCA), both originally developed for a binary-input AWGN channel. The adaptation of design SNR based on the bit-wise mutual information (BMI) is introduced for the cases with bit interleaving. On the other hand, in the case without bit interleaving, we propose a hybrid construction based on Monte-Carlo (MC) method and either GA or RCA. It will be shown that the performance without bit interleaving outperforms those with bit interleaving, and in either case, the proposed low-complexity design approaches can achieve performance comparable to high-complexity full MC methods.
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影响因子: 8.3
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