A Low-Complexity Probabilistic Amplitude Shaping With Short Linear Block Codes

A Low-Complexity Probabilistic Amplitude Shaping With Short Linear Block Codes
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一种具有短线性分组码的低复杂度概率幅度整形

DOI:
10.1109/tcomm.2021.3111032
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发表时间:
2021
影响因子:
8.3
通讯作者:
Ochiai Hideki
Ochiai Hideki
中科院分区:
计算机科学2区
文献类型:
--
作者:
Matsumine Toshiki;Koike-Akino Toshiaki;Ochiai Hideki

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提出了一种基于短线性分组码的概率幅度整形(PAS)方案。在该系统中,对于给定的信息比特序列,在译码线性分组码的过程中产生接近容量的信号分布。我们将整形码的设计问题与经典的覆盖问题联系起来,建议使用好的覆盖码进行整形。仿真结果表明,通过选择最佳二进制码作为整形码,该方案的整形增益约为0.3-1.0分贝。通过与相同块长度的枚举球整形(ESS)方案进行比较,验证了在误块率性能相当的情况下,该方案在接收端的存储复杂度和计算复杂度均显著降低。
We propose a new probabilistic amplitude shaping (PAS) scheme based on short linear block codes. In the proposed system, the capacity-approaching signal distribution is generated in the process of decoding linear block codes for a given information bit sequence. We associate the design problem of shaping codes with the classical covering problem, suggesting the use of good covering codes for shaping. From simulation results, it is demonstrated that by selectingperfectbinary codes as our shaping codes, the proposed scheme offers a shaping gain of around 0.3–1.0 dB. By comparing with the enumerative sphere shaping (ESS) of the same block length, we verify that the proposed scheme achieves significantly lower storage complexity and computational complexity at the receiver even with comparable block error rate performance.
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