7 papers
Cramér-Rao Bound Analysis and Near-Optimal Performance of the Synchronous Nyquist-Folding Generalized Eigenvalue Method (SNGEM) for Sub-Nyquist Multi-Tone Parameter Estimation
Huiguang Zhang
The synchronous Nyquist folding generalized eigenvalue method (SNGEM) realizes full frequency/amplitude/phase estimation of multitone signals at extreme sub-Nyquist rates by jointl…
Efficient Estimation of Sum-Parameters for Multi-Component Complex Exponential Signals with Theoretical Cramer-Rao Bound Analysis
Huiguang Zhang
This paper addresses the challenging problem of parameter estimation for multicomponent complex exponential signals, commonly known as sums of cisoids. Traditional approaches that…
A novel fast short-time root music method for vibration monitoring of high-speed spindles
Huiguang Zhang, Baoguo Liu, Wei Feng +1
Ultra-high-speed spindle bearings challenge traditional vibration monitoring due to broadband noise, non-stationarity, and limited time-frequency resolution. We present a fast Shor…
Phase Transitions with Structured Sparsity
Huiguang Zhang, Baoguo Liu
In the field of signal processing, phase transition phenomena have recently attracted great attention. Donoho's work established the signal recovery threshold using indicators such…
Truly Sub-Nyquist Generalized Eigenvalue Method with High-Resolution
Baoguo Liu, Huiguang Zhang, Wei Feng +3
The achievement of spectral super-resolution sensing is critically important for a variety of applications, such as radar, remote sensing, and wireless communication. However, in c…
Truly Sub-Nyquist Method Based Matrix Pencil and CRT with Super Resolution
Huiguang Zhang, Baoguo Liu
The emergence of ultra-wideband (UWB) and high-throughput signals has necessitated advancements in data sampling technologies1. Sub-Nyquist sampling methods, such as the modulated…