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The dimensionality of the aliasing problem in models with rational spectral densities
Abstract: This paper reconsiders the aliasing problem of identifying the parameters of a continuous time stochastic process from discrete time data. It analyzes the extent to which restricting attention to processes with rational spectral density matrices reduces the number of observationally equivalent models. It focuses on rational specifications of spectral density matrices since rational parameterizations are commonly employed in the analysis of the time series data.
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Bibliographic Information
Provider: Federal Reserve Bank of Minneapolis
Part of Series: Staff Report
Publication Date: 1981
Number: 72