北京邮电大学学报

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北京邮电大学学报

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适用于Ad-Hoc网络移动终端的DOA估计算法

郭莉   

  1. 北京邮电大学
  • 收稿日期:2007-01-23 修回日期:2007-03-22 出版日期:2007-06-30 发布日期:2007-06-30
  • 通讯作者: 郭莉

DOA Estimation algorithm used in Ad-Hoc Network Terminals

  • Received:2007-01-23 Revised:2007-03-22 Online:2007-06-30 Published:2007-06-30

摘要: 提出了一种应用于八单元圆阵的波达角度(DOA)估计算法,实现了360°范围的信号覆盖。该算法采用正交编码方式,通过驱动硬件可变移相器角度变化迭代逼近期望信号波达角度。对算法进行了理论推导,并对算法实现、导频编码方式和放置情况进行了分析。仿真实验证明了该算法的有效性。该算法具有的迭代精度高、复杂度低和收敛速度快的特点,使其非常适合应用在Ad-Hoc移动终端。

Abstract:

A Direction of Arrival (DOA) estimation algorithm is presented based on the eight unit circular array. It can cover plane excellently. The orthogonal channel code is used. It approaches the DOA of the desired signal iteratively through the hardware variable phase shifter. The algorithm implementation, pilot encoding and the pilot placement are discussed. The merits of its accuracy and quick convergence make it suitable to be used in Ad-Hoc network terminals. Simulation results verify the algorithm.