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Soner Bekleric Title of Thesis: Nonlinear Prediction via Volterra Ser

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List <strong>of</strong> symbols<br />

Symbol Name or description<br />

(·) ∗ Complex conjugate<br />

(·) b n<br />

(·) f n<br />

Backward prediction at time index n<br />

Forward prediction at time index n<br />

(·) T Matrix transpose<br />

(ˆ·) Hat denotes prediction<br />

A Filter matrix (either linear or nonlinear)<br />

ai<br />

bij<br />

c2<br />

clms<br />

Cn<br />

Linear prediction filter coefficient at time index i<br />

Quadratic prediction filter coefficient at time index jk<br />

Second order cumulant (autocorrelation)<br />

Cubic prediction filter coefficient at time index lms<br />

n th − order spectrum<br />

d Data vector<br />

E[·] Expectation operator<br />

εn<br />

Error or innovation process <strong>of</strong> time index n<br />

e Noise vector<br />

f Temporal frequency in Herts (Hz)<br />

H1(·) Linear transfer function <strong>of</strong> <strong>Volterra</strong> series<br />

H2(·, ·) Quadratic transfer function <strong>of</strong> <strong>Volterra</strong> series<br />

H3(·, ·, ·) Cubic transfer function <strong>of</strong> <strong>Volterra</strong> series<br />

h Offset (distance between source and receiver)<br />

hk(σ1, . . . , σk) <strong>Volterra</strong> kernels <strong>of</strong> the system<br />

I Identity matrix<br />

Im Imaginary part <strong>of</strong> a complex variable<br />

J Cost function<br />

kp<br />

<strong>Prediction</strong> coefficient<br />

m Model vector<br />

µ Trade-<strong>of</strong>f parameter<br />

N Number <strong>of</strong> data samples

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