A conditional construction of restricted isometries
A conditional construction of restricted isometries
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受限等距的条件构造
DOI:
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发表时间:
2014
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通讯作者:
Joel Moreira
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作者:
A. Bandeira;D. Mixon;Joel Moreira
We study the restricted isometry property of a matrix that is built from the discrete Fourier transform matrix by collecting rows indexed by quadratic residues. We find an $epsilon>0$ such that, conditioned on a folklore conjecture in number theory, this matrix satisfies the restricted isometry property with sparsity parameter $K=Omega(M^{1/2+epsilon})$, where $M$ is the number of rows.