Effect of Errors in Beamforming Analysis Applied for MVDR and CBF Method
Xueping Li1, 2, *, Youcheng Wang3, Zhaoying Wang1, Shu Xu1, Yu Zhang1, 2
1 College of Electronic and Electrical Engineering, Henan Normal University, Xinxiang 453007, China
2 Henan Key Discipline Open Laboratory of Electromagnetic Wave Detecting, Xinxiang 453007, China
3 Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190,China
Abstract
Minimum Variance Distortionless Response (MVDR) method can achieve a lower null level of beamforming compared to the Conventional Beamformer (CBF) method. It can not only minimize the array system mean output power but also maintain a distortion less response to desired signal as it adaptively depends on sample data. The effect of errors in beamforming analysis is applied using MVDR and CBF method. The errors include variance of weight and steering vector with different input SIR. These errors can affect the performance of array system’s mean output power and SINR for both CBF and MVDR. However, the MVDR method has more robust characteristics compared to the CBF method in the case of slight errors. The errors analysis also shows that factors of variance can weaken the performance of MVDR beamformer for suppressing clutters.
Keywords: Beamforming, MVDR, CBF, Error analysis, Beamformer.
Article Information
Article History:
Received Date: 19/02/2016
Revision Received Date: 11/08/2016
Acceptance Date: 01/09/2016
Electronic publication date: 30/12/2016
Collection year: 2016
© Li et al.; Licensee Bentham Open
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (
https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
* Address correspondence to this author at the College of Electronic and Electrical Engineering, Henen Normal University 46# East of Construction Road, Xinxiang, Henan, China; Tel: +863733326151; Fax: +863733326151; E-mail: lxpslxhhw@126.com
Open Peer Review Details |
Manuscript submitted on 19-02-2016 |
Original Manuscript |
Effect of Errors in Beamforming Analysis Applied for MVDR and CBF Method |