ASYMPTOTIC ANALYSIS OF SYNCHROSQUEEZING TRANSFORM—TOWARD STATISTICAL INFERENCE WITH NONLINEAR-TYPE TIME-FREQUENCY ANALYSIS

Matt Sourisseau, Hau Tieng Wu, Zhou Zhou

Research output: Contribution to journalArticlepeer-review

Abstract

We provide a statistical analysis of a tool in nonlinear-type time-frequency analysis, the synchrosqueezing transform (SST), for both the null and nonnull cases. The intricate nonlinear interaction of different quantities in SST is quantified by carefully analyzing relevant multivariate complex Gaussian random variables. Specifically, we provide the quotient distribution of dependent and improper complex Gaussian random variables. Then a central limit theorem result for SST is established. As an example, we provide a block bootstrap scheme based on the established SST theory to test if a given time series contains oscillatory components.

Original languageEnglish (US)
Pages (from-to)2694-2712
Number of pages19
JournalAnnals of Statistics
Volume50
Issue number5
DOIs
StatePublished - Oct 2022

Keywords

  • CR calculation
  • Synchrosqueezing transform
  • complex Gaussian random vector
  • kernel regression
  • time series analysis

ASJC Scopus subject areas

  • Statistics and Probability
  • Statistics, Probability and Uncertainty

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