Fully Quaternion-Valued Adaptive Beamforming Based on Crossed-Dipole Arrays
AbstractBased on crossed-dipole antenna arrays, quaternion-valued data models have been developed for both direction of arrival estimation and beamforming in the past. However, for almost all the models, and especially for adaptive beamforming, the desired signal is still complex-valued as in the quaternion-valued Capon beamformer. Since the complex-valued desired signal only has two components, while there are four components in a quaternion, only two components of the quaternion-valued beamformer output are used and the remaining two are simply discarded, leading to significant redundancy in its implementation. In this work, we consider a quaternion-valued desired signal and develop a fully quaternion-valued Capon beamformer which has a better performance and a much lower complexity. Furthermore, based on this full quaternion model, the robust beamforming problem is also studied in the presence of steering vector errors and a worst-case-based robust beamformer is developed. The performance of the proposed methods is verified by computer simulations. View Full-Text
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Lan, X.; Liu, W. Fully Quaternion-Valued Adaptive Beamforming Based on Crossed-Dipole Arrays. Electronics 2017, 6, 34.
Lan X, Liu W. Fully Quaternion-Valued Adaptive Beamforming Based on Crossed-Dipole Arrays. Electronics. 2017; 6(2):34.Chicago/Turabian Style
Lan, Xiang; Liu, Wei. 2017. "Fully Quaternion-Valued Adaptive Beamforming Based on Crossed-Dipole Arrays." Electronics 6, no. 2: 34.