一种新的自适应算法在天线系统中的应用研究  

An Adaptive Algorithm Used in the Antenna System

作　　者：张志鹏[1] 廉保旺[1] 舒友国[2] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710072 [2]西北工业大学软件与微电子学院,陕西西安710072

出　　处：《计算机仿真》2008年第8期155-158,共4页Computer Simulation

摘　　要：研究了天线系统中一种新的自适应算法,为了显示新算法的优点,和传统的自适应算法以天线系统为背景做了比较。算法在LMS算法的基础上作了一定的修改,通过在干扰来向设置零点来达到抑制干扰的目的。在几种干扰条件下对新算法和传统算法进行了仿真实验,通过分析仿真结果,可以看出,随着干扰的加强,天线对干扰来向的零陷会逐渐加深,从而达到干扰抑制的目的;新算法克服了传统算法在应用上的不足,突破了传统算法在应用上面的局限性。在应用中,从一定程度上弥补了传统算法的不足。新的算法具有很好的实用价值和研究价值。A new adaptive algorithm used in antenna system was studied, and a comparison with the traditional adaptive algorithm under the background of antenna system was made to express the goods of the new algorithm. The new algorithm was based on a modified LMS algorithm. While the algorithm working, it tried to set a null at the direction of the interference, so the interference was cut off or minimized. Then Simulation of the algorithm was given under the background of several conditions with interference. It was found that the antenna system could set a deeper null at the direction of the interference in order to get a better effect in restraining the interference, if the interference was more powerful. The new algorithm can make up the shortage of the traditional algorithm in application, and it can be used in more places than the traditional one. It can take the place of the traditional algorithm in a lot of places, so it is of very good use and it is worthy of further studying.

关 键 词：最小均方算法 功率反演 天线 

分 类 号：TN927[电子电信—通信与信息系统]