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A Newton-based Ziskind-Wax alternating projection algorithm applied to spectral estimation

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2 Author(s)
L. S. Biradar ; Dept. of Electr. Commun. Eng., Indian Inst. of Sci., Bangalore, India ; V. U. Reddy

A Newton-based alternating projection (AP) algorithm for estimating the parameters of exponential signals in noise is presented. Its performance is compared with that of modified forward-backward linear prediction/backward linear prediction (MFBLP/BLP) total least squares (TLS), and iterative quadratic maximum likelihood (IQML) methods using computer simulations. In the case of undamped sinusoids, the AP algorithm yielded a lower threshold SNR than the others. In the case of damped sinusoids, its threshold SNR was the same as that of TLS but was 1 dB lower than that of MFBLP and IQML

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IEEE Transactions on Signal Processing  (Volume:41 ,  Issue: 3 )