[1]路成军,盛卫星,韩玉兵,等.基于可变加载的稳健并行波束形成算法[J].南京理工大学学报(自然科学版),2013,37(03):34.
 Lu Chengjun,Sheng Weixing,Han Yubing,et al.Robust parallel beamforming algorithm based on variable loading[J].Journal of Nanjing University of Science and Technology,2013,37(03):34.
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基于可变加载的稳健并行波束形成算法
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
37卷
期数:
2013年03期
页码:
34
栏目:
出版日期:
2013-06-30

文章信息/Info

Title:
Robust parallel beamforming algorithm based on variable loading
作者:
路成军盛卫星韩玉兵马晓峰
南京理工大学 电子工程与光电技术学院,江苏 南京 210094
Author(s):
Lu ChengjunSheng WeixingHan YubingMa Xiaofeng
School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094,China
关键词:
可变加载 稳健 分块并行 波束形成 范数约束 梯度搜索
Keywords:
variable loading robustness partial parallel beamforming norm constraint gradient search
分类号:
TN911
摘要:
在大阵列天线系统中,为了降低波束形成的运算量和减少数据传输量,该文提出一种波束形成算法。对传统的线性约束最小方差准则(LCMV)算法的自适应权重矢量附加一个范数约束,提出了可变加载迭代LCMV(VLRLCMV)算法。通过梯度搜索的方式迭代得到最优解。将VLRLCMV算法与分块并行思想结合,得到分块并行实现的可变加载迭代LCMV(PVLRLCMV)算法。在保证波束形成算法稳健性的同时减少了算法运算量,从而满足系统实时性的要求。理论分析和仿真结果表明:算法更新一次权重系数仅需11N+5次复数乘法,输出信号干扰噪声比接近最优值,且与分块方式无关。
Abstract:
For large array antenna systems,a beamforming algorithm is proposed to decrease the large amount of computation and high-rate data transmission in beamforming process.A norm constraint to the weight vector of conventional linearly constrained minimum variance(LCMV)algorithm is applied,and a new variable loading recursive LCMV(VLRLCMV)algorithm is proposed here.The optimal weight vector is obtained by gradient searching.A parallel variable loading recursive LCMV(PVLRLCMV)algorithm is proposed by combining the VLRLCMV algorithm with the partial parallel idea.The proposed algorithm can efficiently enhance the robustness and decrease the computational burden,so that it can satisfy the real time requirement of the system.Theoretical analyses and simulation results demonstrate that only 11N+5 times of complex multiplication are required for weight coefficient updating once,and the output signal-to-interference-plus-noise ratio(SINR)is close to the optimal value and independent of the piecemeal way.

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备注/Memo

备注/Memo:
收稿日期:2012-07-19 修回日期:2012-11-19
作者简介:路成军(1984-),男,博士生,主要研究方向:阵列信号处理,E-mail:lcjmdxian@126.com; 通讯作者:盛卫星(1966-),男,教授,博士生导师,主要研究方向:雷达目标电磁散射特性建模及应用、阵列天线、微波成像等,E-mail:shengwx@njust.edu.cn。
更新日期/Last Update: 2013-03-25