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- W2018234197 abstract "In the case that a frame is prescribed for applications and erasures occur in the process of data transmissions, we examine optimal dual frames for the recovery from single erasures. In contrast to earlier papers, we consider the spectral radius of the error operator instead of its operator norm as a measure of optimality. This notion of optimality is natural when the Neumann series is used to recover the original data in an iterative manner. We obtain a complete characterization of spectrally one-erasure optimal dual frames in terms of the redundancy distribution of the prescribed frame. Our characterization relies on the connection between erasure optimal frames and the linear connectivity property of the frame. We prove that the linear connectivity property is equivalent to the intersection dependent property, and is also closely related to the well-known concept of a k-independent set. Additionally, we also establish several necessary and sufficient conditions for the existence of an alternate dual frame to make the iterative reconstruction work." @default.
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- W2018234197 date "2013-12-01" @default.
- W2018234197 modified "2023-10-17" @default.
- W2018234197 title "Linearly connected sequences and spectrally optimal dual frames for erasures" @default.
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- W2018234197 doi "https://doi.org/10.1016/j.jfa.2013.08.012" @default.
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