Search Results for author: Zai Yang

Found 9 papers, 0 papers with code

Direction-of-Arrival Estimation for Constant Modulus Signals Using a Structured Matrix Recovery Technique

no code implementations15 Jul 2023 Xunmeng Wu, Zai Yang, Zhiqiang Wei, Zongben Xu

This paper addresses the problem of direction-of-arrival (DOA) estimation for constant modulus (CM) source signals using a uniform or sparse linear array.

Direction of Arrival Estimation

Multichannel Frequency Estimation in Challenging Scenarios via Structured Matrix Embedding and Recovery (StruMER)

no code implementations15 Jul 2023 Xunmeng Wu, Zai Yang, Zongben Xu

We propose a universal signal-domain approach to solve the optimization problems by embedding the noiseless multichannel signal of interest into a series of low-rank positive-semidefinite block matrices of Hankel and Toeplitz submatrices and formulating the original parameter-domain optimization problems as equivalent structured matrix recovery problems.

Miscellaneous

Nonasymptotic Performance Analysis of Direct-Augmentation and Spatial-Smoothing ESPRIT for Localization of More Sources Than Sensors Using Sparse Arrays

no code implementations22 Feb 2023 Zai Yang, Kaijie Wang

Direction augmentation (DA) and spatial smoothing (SS), followed by a subspace method such as ESPRIT or MUSIC, are two simple and successful approaches that enable localization of more uncorrelated sources than sensors with a proper sparse array.

Separation-Free Spectral Super-Resolution via Convex Optimization

no code implementations28 Nov 2022 Zai Yang, Yi-Lin Mo, Gongguo Tang, Zongben Xu

Atomic norm methods have recently been proposed for spectral super-resolution with flexibility in dealing with missing data and miscellaneous noises.

Miscellaneous Spectral Super-Resolution +1

A Robust and Statistically Efficient Maximum-Likelihood Method for DOA Estimation Using Sparse Linear Arrays

no code implementations25 Mar 2022 Zai Yang, Xinyao Chen, Xunmeng Wu

A recent trend of research on direction-of-arrival (DOA) estimation is to localize more uncorrelated sources than sensors by using a proper sparse linear array (SLA) and the Toeplitz covariance structure, at a cost of robustness to source correlations.

Nonasymptotic performance analysis of ESPRIT and spatial-smoothing ESPRIT

no code implementations10 Jan 2022 Zai Yang

In this paper, we analyze the nonasymptotic performance of ESPRIT and spatial-smoothing ESPRIT with finitely many snapshots and finite SNR.

Robust spectral compressive sensing via vanilla gradient descent

no code implementations21 Jan 2021 Xunmeng Wu, Zai Yang, Zongben Xu

This paper investigates the recovery of a spectrally sparse signal from its partially revealed noisy entries within the framework of spectral compressive sensing.

Compressive Sensing Matrix Completion Information Theory Information Theory

On Gridless Sparse Methods for Line Spectral Estimation From Complete and Incomplete Data

no code implementations9 Jul 2014 Zai Yang, Lihua Xie

This paper is concerned about sparse, continuous frequency estimation in line spectral estimation, and focused on developing gridless sparse methods which overcome grid mismatches and correspond to limiting scenarios of existing grid-based approaches, e. g., $\ell_1$ optimization and SPICE, with an infinitely dense grid.

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