摘要
引用了阵列结构参数ρ,通过把SVM数字波束形成算法应用到CDMA系统中对阵列结构参数ρ进行研究,分别得出了直线阵和圆形阵的阵列结构参数的最佳取值范围;取阵列结构参数的最佳值,确定直线阵和圆形阵的结构;在此基础上分别研究直线阵列、圆形阵列在不过载和过载情况下的性能,得出了不论在不过载和过载的情况下直线阵和圆形阵都能准确接收期望信号,但当干扰信号和期望信号夹角较小及干扰信号之间夹角较小的情况下圆形阵列不能识别出所有的干扰信号,而直线阵可以准确识别干扰信号并对其零陷;而当干扰信号和期望信号夹角较大及干扰信号之间夹角较大的情况下圆形阵列能准确识别出所有的干扰信号,并对其零陷,而直线虽然也能准确接收期望信号但不能准确识别出所有干扰信号。
The geometrical structurepis quoted. The geometrical structure of array is studied by using SVM algorithm which was applied in the CDMA system. The optimum range of the geometrical structure is obtained, and then the optimum geometrical structures of linear and circular arrays are determined. On this base, the performance of linear and circular arrays is studied in the situation of unloading and overloading. The characteristics of linear and circular arrays that the linear and circular arrays can receive accurately the desired signal in the situation of unloading or overloading are obtained. But in the situation of small angle between the desired signal and disturb signal and between the disturb signal and disturb signal, the linear array can distinguish accurately all the disturb signals, but the circular array can not distinguish accurately all the disturb signals. In the situation of big angle, the circular array can distinguish accurately all the disturb signals, but the linear array can not distinguish accurately all the disturb signals.
出处
《无线电工程》
2011年第2期37-40,共4页
Radio Engineering
基金
河北省自然科学基金项目阵列电磁伟播电阻率测井资料反演新方法研究(D2008000767)
