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• W1978596541 abstract "The well-known recursive least-squares (RLS) algorithms are directly dependent on the recursive estimation method for inversion of the auto-correlation matrix based on the matrix inverse lemma. On the basis of recursive estimation of the augmented cross-correlation matrix and the well-known power iteration, this paper establishes a recursive total instrumental-variable (RTIV) algorithm for tracking the total least-squares (TLS) solution of the normal equations in the over-determined instrumental-variable methods. Under the condition that the recursive estimation of the augmented cross-correlation matrix is asymptotically convergent, we show that the weight vector in the RTIV algorithm converges to the direction parallel to the singular vector associated with the smallest singular value of the augmented cross-correlation matrix. When the algorithm is applied in a parameter estimation problem, the converging weight vector corresponds to the TLS solution of the over-determined normal equations. Since the estimated parameters are optimal in the TLS sense, in the case where noise exists in both the input and output of the system or with the short sampling data, its noise rejection capability is superior to that of least-squares-based algorithms. The applicability and performance of the RTIV algorithm are demonstrated by computer simulations for adaptive IIR filtering and harmonic retrieval." @default.
• W1978596541 created "2016-06-24" @default.
• W1978596541 creator A5006014871 @default.
• W1978596541 creator A5020544206 @default.
• W1978596541 date "2007-05-01" @default.
• W1978596541 modified "2023-10-17" @default.
• W1978596541 title "Recursive total instrumental-variable algorithm for solving over-determined normal equations and its applications" @default.
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• W1978596541 doi "https://doi.org/10.1016/j.sigpro.2006.09.015" @default.
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