一种新型的广义空间调制方案设计  

Design of a New Generalized Spatial Modulation Scheme

作　　者：戴林 罗忠亮 胡永华 DAI Lin;LUO Zhongliang;HU Yonghua

机构地区：[1]韶关学院信息工程学院,广东韶关512000

出　　处：《科技创新与应用》2025年第4期30-33,共4页Technology Innovation and Application

基　　金：韶关市科技计划项目(210720154531311);韶关学院重点科研项目(SZ2023KJ18);韶关学院人才项目(9900064702)。

摘　　要：基于空间耦合P-LDPC编码的室内可见光通信系统,该文首先基于多输入、多输出室内可见通信信道的特性,提出一种新型广义空间调制方案,以改善系统的性能。其次,分析空间耦合P-LDPC码在4种广义空间调制方案下的译码门限值。通过理论分析可知,在调制阶数M=4和M=16情况下,提出的新型广义空间调制方案能使空间耦合P-LDPC码分别在6.82 dB和8.64 dB处收敛。而采用双模广义空间调制、激活空间协作调制和传统广义空间调制方案则需要更大的光信噪比。仿真结果也表明,提出的新型广义空间调制方案的性能更优于同类型其他广义空间调制方案。For indoor visible light communication systems based on spatially-coupled P-LDPC coding,this paper first proposes a new generalized spatial modulation scheme based on the characteristics of multi-input and multi-output indoor visible communication channels to improve the performance of the system.Secondly,it analyzes the decoding thresholds of spatially-coupled P-LDPC codes under four generalized spatial modulation schemes;Through theoretical analysis,it is known that when the modulation orders are M=4 and M=16,the proposed new generalized spatial modulation scheme can converge spatially-coupled P-LDPC codes at 6.82 dB and 8.64 dB respectively.However,using dual-mode generalized spatial modulation,activation-spatial cooperative modulation and traditional generalized spatial modulation schemes requires a larger optical signal-to-noise ratio;Simulation results also show that the performance of the proposed new generalized spatial modulation scheme is better than other generalized spatial modulation schemes of the same type.

关 键 词：空间耦合P-LDPC码 广义空间调制 外部互信息转移算法 光信噪比 系统模型 

分 类 号：TN911.3[电子电信—通信与信息系统]