Robust recovery of complex exponential signals from random Gaussian projections via low rank Hankel matrix reconstruction.
Robust recovery of complex exponential signals from random Gaussian projections via low rank Hankel matrix reconstruction.
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通过低秩 Hankel 矩阵重建从随机高斯投影中稳健恢复复杂指数信号
DOI:
10.1016/j.acha.2016.02.003
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发表时间:
2016-09
影响因子:
2.5
通讯作者:
Ye GB
中科院分区:
文献类型:
--
作者:
Cai JF;Qu X;Xu W;Ye GB
This paper explores robust recovery of a superposition of R distinct complex exponential functions with or without damping factors from a few random Gaussian projections. We assume that the signal of interest is of 2N − 1 dimensions and R < 2N − 1. This framework covers a large class of signals arising from real applications in biology, automation, imaging science, etc. To reconstruct such a signal, our algorithm is to seek a low-rank Hankel matrix of the signal by minimizing its nuclear norm subject to the consistency on the sampled data. Our theoretical results show that a robust recovery is possible as long as the number of projections exceeds O(Rln2 N). No incoherence or separation condition is required in our proof. Our method can be applied to spectral compressed sensing where the signal of interest is a superposition of R complex sinusoids. Compared to existing results, our result here does not need any separation condition on the frequencies, while achieving better or comparable bounds on the number of measurements. Furthermore, our method provides theoretical guidance on how many samples are required in the state-of-the-art non-uniform sampling in NMR spectroscopy. The performance of our algorithm is further demonstrated by numerical experiments.
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影响因子:
3
作者:
Candes, Emmanuel J.;Fernandez-Granda, Carlos
通讯作者:
Fernandez-Granda, Carlos
影响因子:
20.6
作者:
Candes, Emmanuel J.;Plan, Yaniv
通讯作者:
Plan, Yaniv
影响因子:
3
作者:
Candes, Emmanuel J.;Recht, Benjamin
通讯作者:
Recht, Benjamin
DOI:
10.1109/29.56027
发表时间:
1990-05-01
期刊:
IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING
影响因子:
--
作者:
HUA, Y;SARKAR, TK
通讯作者:
SARKAR, TK
影响因子:
2.5
作者:
Candès, EJ;Romberg, J;Tao, T
通讯作者:
Tao, T