Adaptive Beamforming Based on Complex Quaternion Processes
Joint Authors
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-06-11
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Motivated by the benefits of array signal processing in quaternion domain, we investigate the problem of adaptive beamforming based on complex quaternion processes in this paper.
First, a complex quaternion least-mean squares (CQLMS) algorithm is proposed and its performance is analyzed.
The CQLMS algorithm is suitable for adaptive beamforming of vector-sensor array.
The weight vector update of CQLMS algorithm is derived based on the complex gradient, leading to lower computational complexity.
Because the complex quaternion can exhibit the orthogonal structure of an electromagnetic vector-sensor in a natural way, a complex quaternion model in time domain is provided for a 3-component vector-sensor array.
And the normalized adaptive beamformer using CQLMS is presented.
Finally, simulation results are given to validate the performance of the proposed adaptive beamformer.
American Psychological Association (APA)
Tao, Jian-wu& Chang, Wen-xiu. 2014. Adaptive Beamforming Based on Complex Quaternion Processes. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-460842
Modern Language Association (MLA)
Tao, Jian-wu& Chang, Wen-xiu. Adaptive Beamforming Based on Complex Quaternion Processes. Mathematical Problems in Engineering No. 2014 (2014), pp.1-10.
https://search.emarefa.net/detail/BIM-460842
American Medical Association (AMA)
Tao, Jian-wu& Chang, Wen-xiu. Adaptive Beamforming Based on Complex Quaternion Processes. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-460842
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-460842