5G移动通信特殊成形基站天线设计  

Special antenna beamforming method for 5G mobile communication system

作　　者：黄建军 黄晓明[2] HUANG Jianjun;HUANG Xiaoming(MOBI Antenna Technologies (Shenzhen) Co.,Ltd.,Shenzhen 518057,China;Guangdong Branch of China United Network Communications Co.,Ltd.,Guangzhou 510630,China)

机构地区：[1]摩比天线技术(深圳)有限公司,广东深圳518057 [2]中国联合网络通信有限公司广东省分公司,广东广州510630

出　　处：《电信科学》2019年第7期47-51,共5页Telecommunications Science

摘　　要：针对5G大范围覆盖的应用场景进行了设计探讨,提出通过对基站天线垂直面进行余割平方成形、以保证大范围覆盖应用场景下信号的均匀性的方法。首先通过算法推导,证明余割平方成形的功率辐射波束可满足5G信号均匀覆盖的要求;其次,采用约束最优化方法,把天线的方向性系数作为目标函数,把指定区域的波束电平作为约束函数,求解基站天线辐射单元的权值,得到满足余割平方成形的辐射方向图。在MATLAB环境下开发了实现此算法的程序。本文的创新之处在于用实际的单元方向图和约束最优化方法,在保证天线增益最优的前提下,综合出需要线阵列天线方向图。引入仰角单元与其他正常单元一起综合方向图,解决顶盲问题,是这个方法的一个应用实例。最后,仿真验证该方法,并设置场景对应用余割平方成形的天线与常规天线的信号覆盖进行比较,证明该方法对信号均匀性有极大的改善。A method was researched to ensure the uniformity of RX signals in long-distance coverage for 5 G applications. In this situation, the antenna pattern model was critical. Firstly, the cosecant-squared shaped beam pattern meets the requirement of uniform coverage through the derivation. Secondly, by constrained optimization algorithm,antenna directivity was taken as objective function, the beam level of specified range was taken as constraint function,to solve the weight parameter of the linear array elements, and the cosecant square pattern could be obtained.MATLAB program completed to realize the algorithm. The innovation was based on constrained optimization algorithm, the real elements patterns were imported, even elevation angle element was proposed in this solution to solve the top blind problem. Finally, the signal level coverage area was compared with which do not have beamforming, it has been shown that cosecant-squared beamforming model can improve the signal uniformity obviously.

关 键 词：等信号覆盖 基站天线 辐射功率方向图 余割平方成形 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]