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Soner Bekleric Title of Thesis: Nonlinear Prediction via Volterra Ser

Soner Bekleric Title of Thesis: Nonlinear Prediction via Volterra Ser

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Symbol Name or description<br />

n−D n− dimensional: e.g 1-D<br />

ω Angular/radial frequency (radian/seconds)<br />

PAR(ω) AR Power spectrum estimator<br />

Pxx(ω) or C2(ω) Power spectrum estimation<br />

p Linear filter length or AR model order<br />

q Quadratic filter length or AR model order<br />

R Autocorrelation matrix<br />

Rp<br />

Autocorrelation sequence at lag p<br />

r Cubic filter length or AR model order<br />

Re Real part <strong>of</strong> a complex variable<br />

S Single waveform in f − x domain<br />

s Single waveform in t − x domain<br />

σ 2 ε<br />

σp<br />

Innovation <strong>of</strong> the system<br />

White noise variance<br />

t Travel time in seconds<br />

θ Apparent slowness<br />

Z(xn) = X(z) Z-transform <strong>of</strong> xn

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