Approximate support recovery of atomic line spectral estimation: A tale of resolution and precision
Approximate support recovery of atomic line spectral estimation: A tale of resolution and precision
复制标题
原子线谱估计的近似支持恢复:分辨率和精度的故事
DOI:
10.1016/j.acha.2018.09.005
复制
发表时间:
2018
影响因子:
2.5
通讯作者:
Tang, Gongguo
中科院分区:
文献类型:
--
作者:
Li, Qiuwei;Tang, Gongguo
This work investigates the parameter estimation performance of super-resolution line spectral estimation using atomic norm minimization. The focus is on analyzing the algorithm's accuracy of inferring the frequencies and complex magnitudes from noisy observations. When the Signal-to-Noise Ratio is reasonably high and the true frequencies are separated by O (1 n), the atomic norm estimator is shown to localize the correct number of frequencies, each within a neighborhood of size O (log n/n 3 σ) of one of the true frequencies. Here n is half the number of temporal samples and σ 2 is the Gaussian noise variance. The analysis is based on a primal–dual witness construction procedure. The obtained error bound matches the Cramér–Rao lower bound up to a logarithmic factor. The relationship between resolution (separation of frequencies) and precision or accuracy of the estimator is highlighted. Our analysis also reveals that the atomic norm minimization can be viewed as a convex way to solve a ℓ 1-norm regularized, nonlinear and nonconvex least-squares problem to global optimality.
登录
查看更多内容
影响因子:
5.4
作者:
Li, Shuang;Yang, Dehui;Wakin, Michael B.
通讯作者:
Wakin, Michael B.
DOI:
10.1109/29.32276
发表时间:
1989-07-01
期刊:
IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING
影响因子:
--
作者:
ROY, R;KAILATH, T
通讯作者:
KAILATH, T
DOI:
--
发表时间:
2015
期刊:
arXiv.org
影响因子:
--
作者:
V. Duval;G. Peyré
通讯作者:
G. Peyré
DOI:
--
发表时间:
2015
期刊:
International Conference on Sampling Theory and Applications
影响因子:
--
作者:
Gongguo Tang
通讯作者:
Gongguo Tang
DOI:
10.1109/globalsip.2013.6736968
发表时间:
2013
期刊:
2013 IEEE Global Conference on Signal and Information Processing
影响因子:
--
作者:
Armin Eftekhari;M. Wakin
通讯作者:
M. Wakin