Recovery of signals from unordered partial frame coefficients

Recovery of signals from unordered partial frame coefficients
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从无序部分帧系数中恢复信号

DOI:
10.1016/j.acha.2016.04.002
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发表时间:
2018
影响因子:
2.5
通讯作者:
Wenchang Sun
Wenchang Sun
中科院分区:
数学1区
文献类型:
--
作者:
Deguang Han;Fusheng Lv;Wenchang Sun

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本文研究了在有限维空间中由无序部分框架系数恢复信号的可行性和稳定性。我们证明了几乎自定位的鲁棒框架,任何信号,除了从勒贝格测量零子集可以恢复从其无序部分帧系数。然而,恢复不一定是稳定的几乎自我定位的强大的帧。我们提出了一类新的框架,即自我定位的强大的框架,确保稳定恢复的任何输入信号与无序的部分帧系数。特别地,只要接收到的无序部分帧系数是无噪声的,则恢复是精确的。我们还提出了一些(几乎)自我定位的鲁棒框架的特征和结构。基于这些特征和构造算法,我们证明了任何随机生成的框架几乎必然是自定位鲁棒的。此外,由不同素数的立方根生成的帧也具有自定位鲁棒性。
In this paper, we study the feasibility and stability of recovering signals in finite-dimensional spaces from unordered partial frame coefficients. We prove that with an almost self-located robust frame, any signal except from a Lebesgue measure zero subset can be recovered from its unordered partial frame coefficients. However, the recovery is not necessarily stable with almost self-located robust frames. We propose a new class of frames, namely self-located robust frames, that ensures stable recovery for any input signal with unordered partial frame coefficients. In particular, the recovery is exact whenever the received unordered partial frame coefficients are noise-free. We also present some characterizations and constructions for (almost) self-located robust frames. Based on these characterizations and construction algorithms, we prove that any randomly generated frame is almost surely self-located robust. Moreover, frames generated with cube roots of different prime numbers are also self-located robust.
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