移动通信系统中基站天线波束赋形设计

Design of Shaped-Beam for Base Station Antenna in Mobile System

摘 要：基站天线的波束赋形设计是提高移动通信系统信道性能的有效手段之一。本文基于移动通信系统，建立了基站天线赋形的优化模型，给出求解具有多个复杂约束条件的乘子罚函数的迭代算法。以八单元线阵为例，设计出压低上半空间所有副瓣峰值，填充下半空间零陷的基站天线，验证了本文方法的正确性和有效性。该方法对于波束赋形问题具有一定的借鉴意义。

Abstract: The beam shaping of base station antenna is an effective method to improve the performance ofmobile system channel. Based on the mobile system,an optimized model is constructed,and the iterative algorithm ofmultiplier penalty function is derived for solving the problem with several complex constraints. Taking the lineararray of eight elements for example,the base station antenna is designed in wbich its peak sidelobe in the upper halfspace is reduced and the nulls in the lower half space are filled. The results show that this method is accurate,effective,and available as reference for other beam shaping problems.