Title :
Fast and exact reconstruction of arbitrary multivariate algebraic polynomials in Chebyshev form
Author :
Potts, Daniel ; Volkmer, Toni
Author_Institution :
Fac. of Math., Tech. Univ. Chemnitz, Chemnitz, Germany
Abstract :
We describe a fast method for the evaluation of an arbitrary high-dimensional multivariate algebraic polynomial in Chebyshev form at the nodes of an arbitrary rank-1 Chebyshev lattice. Our main focus is on conditions on rank-1 Chebyshev lattices allowing for the exact reconstruction of such polynomials from samples along such lattices. We present an algorithm for constructing suitable rank-1 Chebyshev lattices based on a component-by-component approach. Moreover, we give a method for the fast and exact reconstruction.
Keywords :
Chebyshev approximation; polynomial approximation; signal reconstruction; Chebyshev form; arbitrary high-dimensional multivariate algebraic polynomial reconstruction; arbitrary rank-1 Chebyshev lattice; component-by-component approach; Chebyshev approximation; Electronic mail; Indexes; Lattices; Polynomials; Transforms;
Conference_Titel :
Sampling Theory and Applications (SampTA), 2015 International Conference on
Conference_Location :
Washington, DC
DOI :
10.1109/SAMPTA.2015.7148919