基于自适应算法的三维波束赋形技术

发布时间：2018-04-08 17:23

  本文选题：均匀平面阵　切入点：自适应算法　出处：《北京邮电大学学报》2014年04期

【摘要】：针对每个移动终端进行动态的三维波束赋形,为了使三维波束主瓣对准期望用户并且在干扰用户方向形成零陷,构建了均匀平面阵的二维阵列信号模型,研究了基于最小均方误差算法的全局自适应算法,并在此基础上提出了基于降维的局部自适应算法.2种自适应三维波束赋形算法可以动态地调整阵列单元的权值,自适应地改变天线阵列的方向图,为用户提供实时的跟踪服务.仿真结果表明,在一定数量的阵列天线单元的条件下,2种算法均可以实现针对期望用户的自适应三维波束赋形.
[Abstract]:For each mobile terminal, dynamic three-dimensional beamforming is carried out. In order to align the main lobe of the three-dimensional beam to the desired user and to form a zero trapping in the interference direction of the user, a two-dimensional array signal model of uniform plane array is constructed.The global adaptive algorithm based on minimum mean square error (MSE) algorithm is studied. Based on this, a local adaptive algorithm based on dimension reduction is proposed. 2 kinds of adaptive 3D beamforming algorithms can dynamically adjust the weights of array elements.The pattern of antenna array is changed adaptively to provide real-time tracking service for users.Simulation results show that both algorithms can realize adaptive three-dimensional beamforming for desired users under the condition of a certain number of array antenna elements.
【作者单位】： 西安交通大学电子信息工程学院;西安邮电大学通信与信息工程学院;
【基金】：国家自然科学基金项目(61372092) 新一代宽带无线移动通信网国家科技重大专项项目(2013ZX03002010-003) 国家高技术研究发展计划项目(2014AA01A701)
【分类号】：TN929.5
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本文编号：1722592