一种混合盲均衡算法在车载以太网中的应用  

Application of a Hybrid Blind Equalization Algorithm in Automotive Ethernet

作　　者：朱旭东 谢亮 金湘亮 ZHU Xudong;XIE Liang;JIN Xiangliang(School of Physics and Optoelectronics,Xiangtan University,Hunan 411105,China;Microelectronics and System Integration Hunan Engineering Laboratory,Hunan 411105,China;School of Physics and Electronics,Hunan Normal University,Hunan 410081,China)

机构地区：[1]湘潭大学物理与光电工程学院,湖南411105 [2]微光电与系统集成湖南省工程实验室,湖南411105 [3]湖南师范大学物理与电子科学学院,湖南410081

出　　处：《集成电路应用》2023年第12期25-27,共3页Application of IC

摘　　要：阐述针对车载以太网信道,提出一种适用于PAM3信号的混合盲均衡算法。在算法初始迭代的时候采用改进的常数模算法CMA,根据判决误差值来切换到判决导向最小均方误差DDLMS算法。仿真结果表明,混合盲均衡算法不仅收敛速度快,而且得到的剩余稳态误差小,具有良好的均衡效果。This paper expounds that in the automotive ethernet physical layer communication system,inter-symbol interference has seriously affected the communication quality,and blind equalization technology can solve this problem.Aiming at the Automotive Ethernet channel,this paper proposes a hybrid blind equalization algorithm for PAM3 modulated signals.The improved Constant Modulus Algorithm is used in the early stage of algorithm iteration,and then it is switched to the Decision Directed Least Mean Square algorithm according to the decision error value.The simulation results show that the hybrid blind equalization algorithm not only has a fast convergence speed,but also obtains a small residual steady-state error,which has a good equalization effect.

关 键 词：车载以太网 盲均衡 常数模算法 判决导向最小均方误差 

分 类 号：TN911.5[电子电信—通信与信息系统]