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Efficient Implementation of Iterative Adaptive Approach Spectral Estimation Techniques

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2 Author(s)
Glentis, G. ; Dept. of Sci. & Technol. of Telecommun., Univ. of Peloponnese, Tripolis, Greece ; Jakobsson, A.

This paper presents computationally efficient implementations for several recent algorithms based on the iterative adaptive approach (IAA) for uniformly sampled one- and two-dimensional data sets, considering both the complete data case, and the cases when the data sets are missing samples, either lacking arbitrary locations, or having gaps or periodically reoccurring gaps. By exploiting the method's inherent low displacement rank, together with the development of suitable Gohberg-Semencul representations, and the use of data dependent trigonometric polynomials, the proposed implementations are shown to offer a reduction of the necessary computational complexity by at least one order of magnitude. Numerical simulations together with theoretical complexity measures illustrate the achieved performance gain.

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Signal Processing, IEEE Transactions on  (Volume:59 ,  Issue: 9 )