Note on a Lower Bound on the Linear Complexity of the Fast Fourier Transform
Note on a Lower Bound on the Linear Complexity of the Fast Fourier Transform
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关于快速傅立叶变换线性复杂度下界的注记
DOI:
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发表时间:
1973
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影响因子:
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通讯作者:
Jacques Morgenstern
中科院分区:
文献类型:
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作者:
Jacques Morgenstern
A lower bound for the number of additions necessary to compute a family of linear functions by a linear algorithm is given when an upper bound <italic>c</italic> can be assigned to the modulus of the complex numbers involved in the computation. In the case of the fast Fourier transform, the lower bound is (<italic>n</italic>/2) log<subscrpt>2</subscrpt><italic>n</italic> when <italic>c</italic> = 1.