A Scheme for 5G LDPC Coded Modulation Based on CCDM Shaping

YANG Jia-yi; WANG Qian-fan; YAO Xin-yuan-meng; LI Cong-duan; MA Xiao

doi:10.12263/DZXB.20230112

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A Scheme for 5G LDPC Coded Modulation Based on CCDM Shaping

PAPERS | 更新时间：2025-12-08

- A Scheme for 5G LDPC Coded Modulation Based on CCDM Shaping
- ACTA ELECTRONICA SINICA Vol. 52, Issue 9, Pages: 2979-2987(2024)
- 作者机构：
  
  1.中山大学电子与通信工程学院,广东深圳 518000
  2.中山大学计算机学院,广东广州 510006
  3.广东省信息安全技术重点实验室,广东广州 510006
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(61971454;62271514);Science, Technology and Innovation Commission of Shenzhen Municipality(JCYJ20210324120002007;JCYJ20190807155617099;ZDSYS20210623091807023)
- DOI：10.12263/DZXB.20230112
  CLC： TN911
- Received：10 February 2023，
  
  Revised：2023-05-07，
  
  Published：25 September 2024
- 稿件说明：
移动端阅览
杨佳仪, 王千帆, 姚忻圆梦, 等. 基于定型匹配成形的5G LDPC编码调制方案[J]. 电子学报, 2024, 52(09): 2979-2987.

YANG Jia-yi, WANG Qian-fan, YAO Xin-yuan-meng, et al. A Scheme for 5G LDPC Coded Modulation Based on CCDM Shaping[J]. Acta Electronica Sinica, 2024, 52(09): 2979-2987.
杨佳仪, 王千帆, 姚忻圆梦, 等. 基于定型匹配成形的5G LDPC编码调制方案[J]. 电子学报, 2024, 52(09): 2979-2987. DOI：10.12263/DZXB.20230112

YANG Jia-yi, WANG Qian-fan, YAO Xin-yuan-meng, et al. A Scheme for 5G LDPC Coded Modulation Based on CCDM Shaping[J]. Acta Electronica Sinica, 2024, 52(09): 2979-2987. DOI：10.12263/DZXB.20230112

摘要

星座成形技术是通信系统的关键技术之一，可以通过成形技术来获得成形增益.然而，近年提出的定型概率幅度成形方案仅适用于方形星座调制，不适用于一般结构的二维星座.为此，本文提出了适用于一般二维星座的定型匹配成形编码调制方案，其可以直接应用于实际工程中任意对称结构的二维星座.在此基础上，针对5G 低密度校验（Low-Density Parity-Check，LDPC）码的打孔特性进行特殊设计，提出了基于定型匹配成形的5G LDPC编码调制方案.仿真结果表明：（1）本文提出的基于定型匹配成形的二维编码调制方案与通常的概率幅度成形方案性能相一致，且所提方案具有更好的二维星座普适性；（2）本文提出的基于定型匹配成形的5G LDPC编码调制方案可以获得约0.6 dB的成形增益和约0.5 dB的打孔增益（相比于非打孔设计）.

Abstract

Constellation shaping

one of the key techniques for the communication systems

can provide shaping gain. However

recently proposed constant composition distribution matching (CCDM) probabilistic amplitude shaping (PAS) scheme is only suitable for square constellation modulation but not for general structured 2D constellation. This paper presents a generalized CCDM shaping

which can be directly applied to any 2D constellation with a symmetric structure. Furthermore

taking into account the 5G low-density parity-check (LDPC) standard (especially for the puncture structure)

the presented CCDM shaping is combined with the 5G LDPC codes

resulting in a 5G LDPC coded shaping modulation scheme. The numerical results show that the performance of the proposed scheme is consistent with that of the conventional PAS scheme. The simulation results also show that the proposed 5G LDPC coded shaping modulation scheme can achieve a shaping gain of about 0.6 dB and a puncturing gain of about 0.5 dB (compared with the non-puncturing design).

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Keywords

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