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

Civil Engineering

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