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When dealing with adaptive nonlinear filters used in acoustic echo cancellation, the tradeoff between convergence rate and steady-state error is an important issue. This tradeoff is favorably addressed here using a modified version of the normalized least-mean-fourth (NLMF) algorithm applied to an adaptive second-order Volterra structure. A convergence rate improvement is obtained at the same steady-state...
This paper addresses a detailed comparative study of operational performances of a family of the most prominent in the literature so-called “superresolution” methods for the estimation of spatial spectrum of Gaussian noise radiation sources impinging on an antenna array. Real-world operational scenarios are considered, in which small size samples are used for maximum likelihood estimation of the data...
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