A Transmission Scheme of LDPC Codes for Two-User Interference Channel Based on Multi-Level Superposition Coded Modulation

GUAN Meng-sheng; ZHU Min; BAI Bao-ming; LIU Tong

doi:10.12263/DZXB.20250604

您当前的位置：

首页 >

文章列表页 >

A Transmission Scheme of LDPC Codes for Two-User Interference Channel Based on Multi-Level Superposition Coded Modulation

PAPERS | 更新时间：2025-12-27

- A Transmission Scheme of LDPC Codes for Two-User Interference Channel Based on Multi-Level Superposition Coded Modulation
- ACTA ELECTRONICA SINICA Vol. 53, Issue 8, Pages: 2668-2677(2025)
- 作者机构：
  
  西安电子科技大学空天地一体化综合业务网全国重点实验室，陕西西安 710071
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(62271380;62171356)
- DOI：10.12263/DZXB.20250604
  CLC： TN91;
- Received：06 July 2025，
  
  Accepted：22 August 2025，
  
  Published：25 August 2025
- 稿件说明：
移动端阅览
关梦生, 朱敏, 白宝明, 等. 两用户干扰信道下基于多层叠加编码调制的LDPC码传输策略[J]. 电子学报, 2025, 53(08): 2668-2677.

GUAN Meng-sheng, ZHU Min, BAI Bao-ming, et al. A Transmission Scheme of LDPC Codes for Two-User Interference Channel Based on Multi-Level Superposition Coded Modulation[J]. Acta Electronica Sinica, 2025, 53(08): 2668-2677.
关梦生, 朱敏, 白宝明, 等. 两用户干扰信道下基于多层叠加编码调制的LDPC码传输策略[J]. 电子学报, 2025, 53(08): 2668-2677. DOI：10.12263/DZXB.20250604

GUAN Meng-sheng, ZHU Min, BAI Bao-ming, et al. A Transmission Scheme of LDPC Codes for Two-User Interference Channel Based on Multi-Level Superposition Coded Modulation[J]. Acta Electronica Sinica, 2025, 53(08): 2668-2677. DOI：10.12263/DZXB.20250604

摘要

随着技术的不断革新，无线通信向着高层次和多维度发展，带来更高质量通信的同时也伴随着一系列技术难题.例如，多用户干扰导致互信息损失，异构网络下传输性能时变衰落增强，有限资源下的过载能力不足等.这些问题都亟需面向复杂场景的编码理论与传输架构研究.因此，为了改善两用户干扰信道中，用户间串扰导致的互信息损失和传输性能不佳等问题，本文在Han-Kobayashi等效的基础上，提出了一种结合多层叠加编码调制和可逆矩阵映射技术的收发策略和译码方案，为提高该信道场景下的通信可靠性提供了技术参考.在该策略中，发送端将多层叠加编码调制推广到两用户干扰信道，采用速率兼容低密度校验码作分层编码，并结合增加符号间距的映射变换提升传输的分层增益.接收端对应设计内外式多层译码器结构和复合嵌套译码算法，利用高斯近似简化计算复杂度.此外，在该收发策略的基础上，考虑进一步提高精确性，拓展设计了结合递增冗余混合自动重传的传输框架.仿真结果表明，复合嵌套译码算法在强干扰和弱干扰条件下均优于一般多级译码算法，并且性能随分层层数的增加而提升.同时，嵌套重传的算法可以在增加部分复杂度的情况下，获得更好的高信噪比性能.这些工作为干扰信道通信的实际传输应用提供了可选方案.

Abstract

With the continuous advancement of technology

wireless communication is evolving toward higher levels and multiple dimensions. While this progression enhances communication quality

it also introduces significant technical challenges. These include mutual information loss due to multi-user interference

worsened time-varying fading in networks

and insufficient overload factor under limited resources. These issues indicate the critical need for coding theories and transmission schemes designed for complex communication scenarios. To address the loss of mutual information and poor transmission performance caused by inter-user interference in two-user interference channels

this paper proposes a novel transmission scheme and decoding algorithm based on the Han-Kobayashi equivalence. This scheme combines multi-level superposition coded modulation and reversible matrix mapping

effectively improving communication performance in such channels. At the transmitter

multi-level superposition coded modulation was extended to two-user interference channels. Rate compatible low-density parity-check codes were employed for layered encoding

combined with mapping transformations to enhance layered transmission gains. At the receiver

a nested multi-layer decoder structure and interference channel-composite nesting decoder algorithm were designed. Gaussian approximation was used to reduce computational complexity. Additionally

to further improve accuracy

the framework of proposed scheme was expanded by using incremental redundancy-hybrid automatic repeat request. Simulation results show that the novel algorithm outperforms iterative multistage decoding algorithm under both strong and weak interference conditions and its performance is positively correlated to the number of layers. In addition

at the cost of moderate increases in computational complexity

the incremental redundancy-hybrid automatic repeat request enhanced algorithm achieves better performance under high signal-to-noise ratio conditions. These solutions provide practical options for real-world two-user interference channel communication systems.

关键词

Keywords

references

崔勇 , 张蕾 , 马川 . 面向多目标的一体化融合网络体系结构 [J ] . 电子学报 , 2023 , 51 ( 9 ): 2277 - 2288 .

CUI Y , ZHANG L , MA C . Multiple objective oriented integrated network architecture [J ] . Acta Electronica Sinica , 2023 , 51 ( 9 ): 2277 - 2288 . (in Chinese)

张修社 , 胡小全 , 易凯 , 等 . 异构平台要素协同理论方法研究 [J ] . 电子学报 , 2024 , 52 ( 4 ): 1219 - 1229 .

ZHANG X S , HU X Q , YI K , et al . Theory and methodology of heterogeneous platform element-level cooperation [J ] . Acta Electronica Sinica , 2024 , 52 ( 4 ): 1219 - 1229 . (in Chinese)

李军 . 干扰信道中的多层编码调制技术 [D ] . 西安 : 西安电子科技大学 , 2014 .

LI J . Multilevel Coded Modulation for Interference Channels [D ] . Xi’an : Xidian University , 2014 . (in Chinese)

SUO L , LI H Y , ZHANG S , et al . Successive interference cancellation and alignment in K-user MIMO interference channels with partial unidirectional strong interference [J ] . China Communications , 2022 , 19 ( 2 ): 118 - 130 .

AVESTIMEHR A S , EL GAMAL H , JAFAR S A , et al . Introduction to the special issue on interference networks [J ] . IEEE Transactions on Information Theory , 2011 , 57 ( 5 ): 2545 - 2547 .

CARLEIAL A . A case where interference does not reduce capacity (Corresp.) [J ] . IEEE Transactions on Information Theory , 1975 , 21 ( 5 ): 569 - 570 .

COSTA M , GAMAL A E . The capacity region of the discrete memoryless interference channel with strong interference (Corresp.) [J ] . IEEE Transactions on Information Theory , 1987 , 33 ( 5 ): 710 - 711 .

SATO H . The capacity of the Gaussian interference channel under strong interference (Corresp.) [J ] . IEEE Transactions on Information Theory , 1981 , 27 ( 6 ): 786 - 788 .

DONG K L , LIN P H , MROSS M , et al . Second-order rate analysis of a two-user Gaussian interference channel with heterogeneous blocklength constraints [C ] // 2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications . Piscataway : IEEE , 2024 : 921 - 925 .

HAN T , KOBAYASHI K . A new achievable rate region for the interference channel [J ] . IEEE Transactions on Information Theory , 1981 , 27 ( 1 ): 49 - 60 .

XIA H Y , MAO Y J , ZHOU X K , et al . Weighted sum-rate maximization of rate-splitting multiple access with confidential messages [J ] . IEEE Transactions on Wireless Communications , 2024 , 23 ( 10 ): 13738 - 13751 .

SINGH A , MANAPURE A N , KAUR M , et al . Centralized power control in wireless interference channel with imperfect CSI [C ] // 2023 IEEE 20th India Council International Conference . Piscataway : IEEE , 2024 : 939 - 943 .

BACCELLI F , EL GAMAL A , TSE D N C . Interference networks with point-to-point codes [J ] . IEEE Transactions on Information Theory , 2011 , 57 ( 5 ): 2582 - 2596 .

SANTAMARIA I , SOLEYMANI M , JORSWIECK E , et al . Interference minimization in beyond-diagonal RIS-assisted MIMO interference channels [J ] . IEEE Open Journal of Vehicular Technology , 2025 , 6 : 1005 - 1017 .

CHAHINE K , JIANG Y H , CHO J , et al . DeepIC: Learning codes for interference channels [J ] . IEEE Transactions on Wireless Communications , 2024 , 23 ( 4 ): 2740 - 2754 .

MOTAHARI A S , KHANDANI A K . Capacity bounds for the Gaussian interference channel [J ] . IEEE Transactions on Information Theory , 2009 , 55 ( 2 ): 620 - 643 .

SHANG X H , KRAMER G , CHEN B . A new outer bound and the noisy-interference sum-rate capacity for Gaussian interference channels [J ] . IEEE Transactions on Information Theory , 2009 , 55 ( 2 ): 689 - 699 .

ZHENG N J , HE Y X , BAI B M , et al . LDPC code design for Gaussian multiple-access channels using dynamic EXIT chart analysis [C ] // 2017 IEEE International Conference on Acoustics, Speech and Signal Processing . Piscataway : IEEE , 2017 : 3679 - 3683 .

BALATSOUKAS-STIMMING A , LIAVAS A P . Design of LDPC codes for the unequal power two-user Gaussian multiple access channel [J ] . IEEE Wireless Communications Letters , 2018 , 7 ( 5 ): 868 - 871 .

LI X D , CHEN P P , FANG Y , et al . Design of protograph-based LDPC codes for two-user Gaussian multiple access channel [J ] . IEEE Wireless Communications Letters , 2022 , 11 ( 9 ): 1990 - 1994 .

KUMAR J D , MOHAPATRA P , PAPPAS N . Age of information in a two user MISO interference channel under Rayleigh fading [C ] // 2025 National Conference on Communications . Piscataway : IEEE , 2025 : 1 - 6 .

GONG C , TAJER A , WANG X D . Interference channel with constrained partial group decoding [J ] . IEEE Transactions on Communications , 2011 , 59 ( 11 ): 3059 - 3071 .

IMAI H , HIRAKAWA S . A new multilevel coding method using error-correcting codes [J ] . IEEE Transactions on Information Theory , 1977 , 23 ( 3 ): 371 - 377 .

DUAN L , RIMOLDI B , URBANKE R . Approaching the AWGN channel capacity without active shaping [C ] // Proceedings of IEEE International Symposium on Information Theory . Piscataway : IEEE , 1997 : 374 .

MA X , PING L . Power allocations for multilevel coding with sigma mapping [J ] . Electronics Letters , 2004 , 40 ( 10 ): 609 - 611 .

王秀妮 , 马啸 , 白宝明 . 多层叠加LDPC码编码调制技术 [J ] . 电子学报 , 2009 , 37 ( 7 ): 1536 - 1541 .

WANG X N , MA X , BAI B M . Multilevel coded modulation based on superimposed LDPC codes [J ] . Acta Electronica Sinica , 2009 , 37 ( 7 ): 1536 - 1541 . (in Chinese)

ZHAO S C , MA X , BAI B M . Decoding algorithms of LDPC coded superposition modulation [J ] . IEEE Communications Letters , 2014 , 18 ( 3 ): 487 - 490 .

WANG D D , WANG L Q , CHEN X , et al . Irregular QC-LDPC based multi-level coded modulation scheme for the next generation optical communication systems [C ] // 2017 Opto-Electronics and Communications Conference (OECC) and Photonics Global Conference . Piscataway : IEEE , 2017 : 1 - 2 .

ZHANG G , CHEN X B , HU Y N . Singular value decomposition optimizes multi-level orthogonal code index modulation DCSK system [J ] . IEEE Communications Letters , 2024 , 28 ( 12 ): 2874 - 2878 .

MATSUMINE T , YANKOV M P , FORCHHAMMER S . Geometric constellation shaping for concatenated two-level multi-level codes [J ] . Journal of Lightwave Technology , 2022 , 40 ( 16 ): 5557 - 5566 .

李琼 . 两用户干扰信道的LDPC叠加编码技术研究 [D ] . 西安 : 西安电子科技大学 , 2015 .

LI Q . LDPC-Based Superposition Coding for Two-User Interference Channels [D ] . Xi’an : Xidian University , 2015 . (in Chinese)

SHARIFI S , TANC A K , DUMAN T M . On LDPC codes for Gaussian interference channels [C ] // 2014 IEEE International Symposium on Information Theory . Piscataway : IEEE , 2014 : 1992 - 1996 .

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

A Review of Coupled LDPC Codes for Streaming Communications

A New Quasi-Random LDPC Convolutional Codes and Window Decoding

Related Author

LIU Tong

BAI Bao-ming

ZHU Min

GUAN Meng-sheng

WANG Qian-fan

YANG Jia-yi

WANG Yin-chu

CAI Sui-hua

Related Institution

State Key Laboratory of Integrated Services Networks Xidian University

School of Computer Science and Engineering, Sun Yat-Sen University

Guangdong Key Laboratory of Information Security Technology, Sun Yat-sen University

College of Electrical Engineering, Chongqing Vocational Institute of Engineering

College of Communication Engineering, Chongqing University

⁰