ROBUST MVDR BEAMFORMER FOR NULLING LEVEL CONTROL VIA MULTI-PARAMETRIC QUADRATIC PROGRAMMING

• DOI: 10.2528/pierc11022507
• Publication Date: 2015-01-13T21:30:22Z
• Authors: Fulai Liu; Jinkuan Wang; C. Y. Sun; Ruiyan Du
• Keywords: Sequential quadratic programming

MVDR beamformer is one of the well-known adaptive beamforming techniques that offers ability to resolve signals are separated by a fraction an antenna beamwidth. In ideal scenario, can not only minimize array output power but also maintain distortionless mainlobe response toward desired signal. Unfortunately, may have unacceptably low nulling level, which lead significant performance degradation in case unexpected interfering signals. A new robust presented control level array. this proposed approach, optimization problem formulated as multi-parametric quadratic programming (mp-QP) such optimal weight vector be easily obtained real-valued computation. The method guarantee strictly below prescribed threshold. Simulation results verify efficiency method. Received 25 February 2011, Accepted 21 March Scheduled 2011 Corresponding author: Fu Lai Liu ([e-mail]). † F. L. with School Automation, Southeast University, Nanjing, China.