DOA and Noncircular Phase Estimation of Noncircular Signal via an Improved Noncircular Rotational Invariance Propagator Method
Joint Authors
Chen, Xueqiang
Wang, Chenghua
Zhang, Xiao-fei
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-04-28
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
We consider the computationally efficient direction-of-arrival (DOA) and noncircular (NC) phase estimation problem of noncircular signal for uniform linear array.
The key idea is to apply the noncircular propagator method (NC-PM) which does not require eigenvalue decomposition (EVD) of the covariance matrix or singular value decomposition (SVD) of the received data.
Noncircular rotational invariance propagator method (NC-RI-PM) avoids spectral peak searching in PM and can obtain the closed-form solution of DOA, so it has lower computational complexity.
An improved NC-RI-PM algorithm of noncircular signal for uniform linear array is proposed to estimate the elevation angles and noncircular phases with automatic pairing.
We reconstruct the extended array output by combining the array output and its conjugated counterpart.
Our algorithm fully uses the extended array elements in the improved propagator matrix to estimate the elevation angles and noncircular phases by utilizing the rotational invariance property between subarrays.
Compared with NC-RI-PM, the proposed algorithm has better angle estimation performance and much lower computational load.
The computational complexity of the proposed algorithm is analyzed.
We also derive the variance of estimation error and Cramer-Rao bound (CRB) of noncircular signal for uniform linear array.
Finally, simulation results are presented to demonstrate the effectiveness of our algorithm.
American Psychological Association (APA)
Chen, Xueqiang& Wang, Chenghua& Zhang, Xiao-fei. 2015. DOA and Noncircular Phase Estimation of Noncircular Signal via an Improved Noncircular Rotational Invariance Propagator Method. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1073277
Modern Language Association (MLA)
Chen, Xueqiang…[et al.]. DOA and Noncircular Phase Estimation of Noncircular Signal via an Improved Noncircular Rotational Invariance Propagator Method. Mathematical Problems in Engineering No. 2015 (2015), pp.1-12.
https://search.emarefa.net/detail/BIM-1073277
American Medical Association (AMA)
Chen, Xueqiang& Wang, Chenghua& Zhang, Xiao-fei. DOA and Noncircular Phase Estimation of Noncircular Signal via an Improved Noncircular Rotational Invariance Propagator Method. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1073277
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1073277