基于短波跳频电台的抗干扰算法的实现

Research of ant-interference Module Based on Shortwave Hopping Frequency Radio

结合不断出现的各种变步长自适应LMS算法,将其真正的应用在短波跳频电台的SIMULINK仿真平台;文章以S函数为基础,建立了自适应算法模块;自适应算法模块针对目前提出的各种变步长LMS算法,将其步长、阶数等参数统一于固定的编辑界面,无需在程序里找到相应代码并进行调整,使修改算法的核心参数更加方便,简洁;通过对算法两通道信号的实部和虚部分开进行滤波的方式,达到了对复数信号进行处理的目的;基于短滤跳频电台的仿真模型,利用建立的自适应算法模块对干扰进行抵消;结果仿真结果表明,自适应算法模块能有效的对短波跳频电台干扰进行了抑制,其误码率从0.482降到0.0108.结论理论上,自适应算法模块可以对任何变步长算法程序进行嵌入并应用于不同仿真平台。

In connection with various variable step size LMS algorithm emerging,which is a real application in SIMULINK simulation platform on hopping shortwave radio.In this paper,based on S-function,establish an adaptive algorithm module.Adaptive algorithm module for the current proposed various variable step size LMS algorithm,make the step parameters as unified fixed editing interface,without having to find the corresponding code in the program and make adjustments so that the core parameter modification algorithm more convenient,simple;Through the real and imaginary part of the algorithm of the two-channel signal filtering,it open the way to achieve the complex signal processing;adaptive filter algorithm module based on short-hopping radio simulation model and using of the established interference canceling.The simulation results show that the adaptive algorithm module can effectively make shortwave frequency-hopping radio interference is suppressed,its error rate down to 0.0108 from 0.482.Theoretically,any adaptive algorithm module can be embedded variable step algorithm and applied different simulation platform.