Asymptotic Normality of Cross-correlogram Estimates of the Response Function

Autor: Valery V. Buldygin, Frederic Utzet, Vladimir Zaiats
Rok vydání: 2004
Předmět:
Zdroj: Statistical Inference for Stochastic Processes. 7:1-34
ISSN: 1387-0874
DOI: 10.1023/b:sisp.0000016454.89610.35
Popis: The problem of estimation of an unknown response function of a time-invariant continuous linear system is considered. Discrete-time sample input–output cross-correlograms are taken as estimates of the response function. The inputs are supposed to be zero-mean stationary Gaussian processes close, in some sense, to a white noise. Both asymptotic normality of finite-dimensional distributions of the estimates and their asymptotic normality in spaces of continuous functions are studied. Our basic tool is a new integral representation for cumulants of the estimate as a finite sum of integrals involving cyclic products of kernels. Some inequalities for these integrals are obtained and their asymptotic behaviour is studied.
Databáze: OpenAIRE