An efficient adaptive algorithm for the direction-of-arrival (DOA) estimation utilizing the solution of extreme eigenvalue problem

Seungwon Choi, Hyeon Deok Bae, Tapan K. Sarkar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The authors introduce an alternative method for solving the extreme eigenvalue problem for DOA estimation. The proposed technique utilizes the conjugate gradient method (CGM) for iteratively and efficiently finding one of the noise eigenvectors which corresponds to the smallest eigenvalue of the autocovariance matrix which is full complex-valued semidefinite Hermitian. When the proposed minimum eigenvalue searching (MES) method is utilized, only one noise eigenvector which corresponds to the smallest eigenvalue is computed. In addition to circumventing the need for a separate routine, the MES method can estimate the DOA of fully coherent signals without including the detection procedure under the assumption that the number of unknowns involved in the procedure is larger than the actual number of signals. The authors also provide a suggestion for removing the pseudopeaks appearing in the spatial spectrum due to the large number of antenna elements.

Original languageEnglish (US)
Title of host publication1991 Digest
PublisherIEEE Computer Society
Pages376-379
Number of pages4
ISBN (Print)0780301447
StatePublished - Dec 1 1991
EventAntennas and Propagation Society Symposium - London, Ont, Can
Duration: Jun 24 1991Jun 28 1991

Publication series

NameAP-S International Symposium (Digest) (IEEE Antennas and Propagation Society)
Volume1
ISSN (Print)0272-4693

Other

OtherAntennas and Propagation Society Symposium
CityLondon, Ont, Can
Period6/24/916/28/91

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Choi, S., Bae, H. D., & Sarkar, T. K. (1991). An efficient adaptive algorithm for the direction-of-arrival (DOA) estimation utilizing the solution of extreme eigenvalue problem. In 1991 Digest (pp. 376-379). (AP-S International Symposium (Digest) (IEEE Antennas and Propagation Society); Vol. 1). IEEE Computer Society.