tailieunhanh - Báo cáo hóa học: "Research Article Recursive and Fast Recursive Capon Spectral Estimators"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Recursive and Fast Recursive Capon Spectral Estimators | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 45194 12 pages doi 2007 45194 Research Article Recursive and Fast Recursive Capon Spectral Estimators Jacob Benesty 1 Jingdong Chen 2 and Yiteng Arden Huang2 1 Universite du Quebec INRS-EMT 800 de la Gauchetiere Quest Suite 6900 Montreal Quebec Canada H5A 1K6 2 Bell Laboratories Alcatel-Lucent 600 Mountain Avenue Murray Hill NJ 07974 USA Received 26 April 2006 Revised 13 November 2006 Accepted 11 December 2006 Recommended by Ulrich Heute The Capon algorithm which was originally proposed for wavenumber estimation in array signal processing has become a powerful tool for spectral analysis. Over several decades a significant amount of research attention has been devoted to the estimation of the Capon spectrum. Most of the developed algorithms thus far however rely on the direct computation of the inverse of the input correlation or covariance matrix which can be computationally very expensive particularly when the dimension of the matrix is large. This paper deals with fast and efficient algorithms in computing the Capon spectrum. Inspired from the recursive idea established in adaptive signal processing theory we first derive a recursive Capon algorithm. This new algorithm does not require an explicit matrix inversion and hence it is more efficient to implement than the direct-inverse approach. We then develop a fast version of the recursive algorithm based on techniques used in fast recursive least-squares adaptive algorithms. This new fast algorithm can further reduce the complexity of the recursive Capon algorithm by an order of magnitude. Although our focus is on the Capon spectral estimation the ideas shown in this paper can also be generalized and applied to other applications. To illustrate this we will show how to apply the recursive idea to the estimation of the magnitude squared coherence function which plays an important role for problems like .

TÀI LIỆU LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.