基于System Generator的跳频通信系统LMS干扰对消算法实现  

The Realization of LMS Interference Cancellation Algorithm Applied in the Frequency Hopping Communication on System Generator

作　　者：商贺[1] 谭志良[1] 

机构地区：[1]军械工程学院静电与电磁防护研究所,河北石家庄050003

出　　处：《军械工程学院学报》2016年第3期38-42,共5页Journal of Ordnance Engineering College

基　　金：重点实验室基金项目(9140C87030413JB34001)

摘　　要：针对用于解决无线通信系统与其他用频设备之间电磁兼容(EMC)问题的LMS自适应干扰对消算法,利用System Generator对其进行了建模和仿真,在定频情况下证明了模块的正确性和有效性.将其应用到所建立的跳频通信系统中进行仿真,得到了不同定点数精度下信噪比-误码率曲线,据此分析了不同定点数精度的算法对抗干扰效果的影响,认为只有定点数精度高于阈值时,抗干扰模块才能对通信系统的通信质量有较大提升.Aimed at the LMS adaptive interference cancellation system for solving the EMC problem when wireless communication systems are used with other using-frequency equipment,the LMS adaptive cancellation algorithm is built and simulated on System Generator,and the effect and validity of the module is verified under the condition of constant-frequency.Then,it is applied to the frequency hopping communication system,the SNR-SER curve is achieved in different fixed-point number precisions.Finally,the influence of the fixed-point number precision is analyzed,and the conclusion is reached that the module can improve the communication quality effectively in the conditional fixed-point number precision.

关 键 词：LMS自适应算法 跳频通信系统 抗干扰 EMC System GENERATOR 

分 类 号：TN975[电子电信—信号与信息处理]