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MMSE predictor and interpolator . A scalar time series x (0), x (1),... is modeled as a moving average (MA) process: x ( t )
MMSE predictor and interpolator. A scalar time series x(0), x(1),... is modeled as a moving average (MA) process:
x(t) = a0w(t) + a1w(t-1) + a2w(t-2) +... +aNw(t-N).
where w(t) are i.i.d. N(0,1).Assume that the coefficients a1, a2,... aN, are known.
a)Predicting the next value from the current value.Find the MMSE predictor of x(t+1) based on x(t).(Note, based just on x(t), not on x(t-1), x(t-2), ...).
b)MMSE interpolator.Find the MMSE predictor of x(t) based only on x(t-1) and x(t+1).
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