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Variable step-size affine projection sign algorithm

Variable step-size affine projection sign algorithm

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Proposed is a variable step-size affine projection sign algorithm (APSA) based on the minimisation of mean-square deviation. Because the proposed algorithm calculates the optimum step size in every iteration, it ensures an improved performance in terms of convergence rate and misalignment, compared to conventional APSAs. The proposed algorithm is tested in a system identification scenario that includes impulsive noise.

Inspec keywords: adaptive filters; iterative methods; minimisation; impulse noise

Other keywords: impulsive noise; adaptive filter; variable step-size affine projection sign algorithm; system identification scenario testing; mean-square deviation minimisation; variable step-size APSA; optimum step size calculation; iteration algorithm

Subjects: Filtering methods in signal processing; Signal processing theory; Optimisation techniques; Interpolation and function approximation (numerical analysis); Optimisation techniques; Interpolation and function approximation (numerical analysis)

References

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      • S. Haykin . (1996) Adaptive filter theory.
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      • K. Ozeki , T. Umeda . An adaptive filtering algorithm using an orthogonal projection to an affine subspace and its properties. Electron. Commun. Jpn. , 5 , 19 - 27
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