电子学报 ›› 2014, Vol. 42 ›› Issue (3): 587-591.DOI: 10.3969/j.iss.0372-2012-2014.03.025

• 科研通信 • 上一篇    下一篇

基于双不确定集约束的稳健宽带波束形成算法

陈明建, 罗景青   

  1. 合肥电子工程学院, 安徽合肥 230037
  • 收稿日期:2012-04-05 修回日期:2013-07-31 出版日期:2014-03-25
    • 作者简介:
    • 陈明建 男,1983年生于湖南常德,博士,讲师,研究方向为阵列信号处理.E-mail:cdcmj@126.com
    • 基金资助:
    • 国家自然科学基金 (No.61171170)

Robust Broadband Beamforming Algorithm Under the Double Uncertainty Set Constraints

CHEN Ming-jian, LUO Jing-qing   

  1. Electronic Engineering Institute of Hefei, Hefei, Anhui 230037, China
  • Received:2012-04-05 Revised:2013-07-31 Online:2014-03-25 Published:2014-03-25
    • Supported by:
    • National Natural Science Foundation of China (No.61171170)

摘要: 针对传统不确定集约束稳健波束形成算法(S-WCRB)的性能依赖于模约束参数的问题,提出了双不确定集约束的稳健宽带波束形成(D-WCRB)算法.该算法将期望信号导向矢量约束于两个不同参数的球形不确定集中,解决模约束参数选择不当引起SINR性能下降的问题,推导了D-WCRB算法与S-WCRB算法获得不同SINR的必要条件,并讨论了D-WCRB算法中约束参数的选择问题.最后给出的数值仿真结果验证了该算法的有效性.

关键词: 稳健波束形成, 宽带, 导向矢量, 双不确定集约束

Abstract: Since the robust beamformer based on a single uncertainty set constraints was susceptible to the norm constraint parameter,a novel robust broadband beamforming algorithm based on the double uncertainty set constraints was proposed.In the case that the practical steering vector is constrained to two spherical uncertainty sets with different model parameter,the proposed method effectively overcomes the SINR degradation problem of the robust beamformer based on a single uncertainty set constraints.Moreover,a necessary condition under which the D-WCRB algorithm achieves different SINR performance from the S-WCRB algorithm was derived.The choices of constraint parameter were also discussed.Finally,simulation results demonstrate the effectiveness of the proposed algorithm.

Key words: robust beamforming, broadband, steering vector, double uncertainty set constraint

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