A deterministic sparse FFT algorithm for vectors with small support
A deterministic sparse FFT algorithm for vectors with small support
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DOI:
10.1007/s11075-015-0028-0
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发表时间:
2015-04
影响因子:
2.1
通讯作者:
G. Plonka-Hoch;Katrin Wannenwetsch
中科院分区:
文献类型:
--
作者:
G. Plonka-Hoch;Katrin Wannenwetsch
In this paper we consider the special case where a signalxis known to vanish outside a support interval of lengthm<N. If the support lengthmofxor a good bound of it is a-priori known we derive a sublinear deterministic algorithm to computexfrom its discrete Fourier transform. In case of exact Fourier measurements we require only(mm) arithmetical operations. For noisy measurements, we propose a stable(mN) algorithm.