Bimodal Wilson systems in L2(R)
Bimodal Wilson systems in L2(R)
复制标题
L2(R) 中的双峰 Wilson 系统
DOI:
10.1016/j.jmaa.2021.125480
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发表时间:
2022
影响因子:
1.3
通讯作者:
Okoudjou, Kasso A.
中科院分区:
文献类型:
--
作者:
Bhimani, Divyang G.;Okoudjou, Kasso A.
Given a window ϕ∈ L 2 (R), and lattice parameters α, β> 0, we introduce a bimodal Wilson system W (ϕ, α, β) consisting of linear combinations of at most two elements from an associated Gabor G (ϕ, α, β). For a class of window functions ϕ, we show that the Gabor system G (ϕ, α, β) is a tight frame of redundancy β− 1 if and only if the Wilson system W (ϕ, α, β) is Parseval system for L 2 (R). Examples of smooth rapidly decaying generators ϕ are constructed. In addition, when 3≤ β− 1∈ N, we prove that it is impossible to renormalize the elements of the constructed Parseval Wilson frame so as to get a well-localized orthonormal basis for L 2 (R).
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DOI:
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发表时间:
2008
期刊:
Int. J. Wavelets Multiresolution Inf. Process.
影响因子:
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作者:
P. Wojdyllo
通讯作者:
P. Wojdyllo
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--
发表时间:
2008
期刊:
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2
作者:
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