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Comparison of Quality Power Spectrum Estimation (Bartlett, Welch, Blackman & Tukey) Methods

, , , и . International Journal of Innovative Science and Modern Engineering (IJISME), 1 (5): 28-31 (апреля 2013)

Аннотация

To convert the analog signals into samples of digital signals is called the DSP. In this paper we study the power spectrum estimation of DSP. There is a fluctuation on DSP signals thermal noise in resistors & electronic devices. There are two methods for calculating PSE is parametric & non parametric methods. In Nonparametric (classical) methods – begin by estimating the autocorrelation sequence from a given data. Limitations of non parametric methods are we require inherent assumptions for autocorrelation estimate. Parametric method we assume that signal is output of a system having white noise as an input. We model the system and get its parameters i.e. coloring filter coefficients and predict the power spectrum. Here we compare the Yule-Walker method & Burg method for Power spectrum estimation. In this paper we see that parametric methods do not need these assumptions.

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