Consider a random process X (t) expanded in the form N, where

Consider a random process X (t) expanded in the form N, where W’ (t) is a remainder noise term. The {Fi (t)} Ni = 1 form an orthonormal set over interval 0 = t = T, and the Xj are defined by. Let W’ (tk) denote a random variable obtained by observing W’ (t) at tune t = that