Journal of Systems Engineering and Electronics ›› 2011, Vol. 22 ›› Issue (5): 749-753.doi: 10.3969/j.issn.1004-4132.2011.05.004

• ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

Minimum geometric power distortionless response beamforming against heavy-tailed noise of unknown statistics

Wenchang Wang1,2,*, Lei Li1, Chunjing Liu2, and Feng Liu2   

  1. 1. School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China;
    2. National Information Control Laboratory, Chengdu 610036, P. R. China
  • Online:2011-10-28 Published:2010-01-03


A minimum geometric power distortionless response beamforming approach against impulsive noise (including all α-stable noise) of unknown statistics is proposed. Due to that definite logarithmic moments require no priori knowledge of impulsive noise, this new beamformer substitutes the logarithmic moments for the second-order moments and iteratively minimizes the “geometric power” of the beamformer’s output snapshots, subjected to a linear constraint. Therefore, the proposed beamformer can provide significantly higher output geometric signal-to-noise-andinterference ratio. Moreover, the optimum weight vector is obtained by using a new iteration process. The simulation results prove that the new method is effective.