教師資料查詢 | 類別: 期刊論文 | 教師: 陳巽璋SHIUNN-JANG CHERN (瀏覽個人網頁)

標題:A New Adaptive Constrained LMS Time Delay Estimation Algorithm
學年87
學期1
出版(發表)日期1998/11/01
作品名稱A New Adaptive Constrained LMS Time Delay Estimation Algorithm
作品名稱(其他語言)
著者陳巽璋; Lin, S.N.
單位淡江大學電機工程學系
出版者
著錄名稱、卷期、頁數Signal Processing 71(1), pp.29-44
摘要In this paper, a new adaptive constrained LMS time delay estimation (TDE) algorithm is devised. It is known that in the TDE problem, the time differences between relevant sensors can be modeled as a finite impulse response (FIR) filter whose weight coefficients are samples of a sinc function. Moreover, in case of non-integer TDE, the performance of estimation result is highly dependent upon the convergence rate of weight coefficients of the FIR filter. To speed up the convergence rate of the weight coefficients, in this paper, we propose a new constrained LMS TDE algorithm by making use of the constraint that the sum of the squares of the weight coefficients of the FIR filter equals unity. Here, we show that the constrained optimum solution is identical to the true weights solution which is the error free optimum solution. Also, to document the advantage of the proposed algorithm, the statistical analysis of the steady-state weight-error vector as well as the mean square error of the estimator, using the proposed algorithm, are derived. As confirmed by the theoretical and simulation results, the new proposed algorithm for non-integer TDE outperform the conventional LMS TDE algorithm.
關鍵字Time delay estimation;Constrained LMS TDE algorithm
語言英文
ISSN1872-7557;0165-1684
期刊性質國外
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通訊作者
審稿制度
國別荷蘭
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