Robust Beamforming Algorithm Based on Linear Constrained Minimum Variance and Diagonal Loading

DOI

10.2991/iccmcee-15.2015.21How to use a DOI?

Keywords

Robust microphone array beamforming; Linear constrainted minimum variance criterion; Diagonal loading; Spatial response variation function

Abstract

In order to improve the robustness of microphone array beamformer in existing mismatch errors, robust beamforming algorithm based on linear constrained minimum variance and diagonal loading method is proposed. The proposed algorithm incorporates the spatial response variation function into the linear constrainted minimum variance criterion to design the frequency invariant beamformer and improve the robustness against microphone array mismatch errors in the actual environment by diagonal loading method. Simulation results and analyses illustrate that the array response within passband is robust, the stopband amplitude is controlled in the appropriate range, and the proposed algorithm based closed solution is better than the proposed algorithm based on convex optimization algorithm.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Chuan He
AU  - YeCai Guo
AU  - Xiaoyan Chen
AU  - LiHua Wang
PY  - 2015/11
DA  - 2015/11
TI  - Robust Beamforming Algorithm Based on Linear Constrained Minimum Variance and Diagonal Loading
BT  - Proceedings of the 2015 4th International Conference on Computer, Mechatronics, Control and Electronic Engineering
PB  - Atlantis Press
SP  - 102
EP  - 105
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccmcee-15.2015.21
DO  - 10.2991/iccmcee-15.2015.21
ID  - He2015/11
ER  -