Symmetric Window Constraint

Because we are designing a zero-phase window, use only the positive-time part $ h\left(n\right)$ :

$\displaystyle h\left(n\right)=w\left(n\right)\qquad n\geq 0$ (4.64)

$\displaystyle w\left(n\right)=\left\{ \begin{array}{ll} h\left(n\right) & n\geq 0\\ h\left(-n\right) & n<0\end{array} \right.$ (4.65)


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LP Formulation of Chebyshev Window Design