Exam Questions Papers - Engineering

Q1:

The following sequence represents autocorrelation of a real valued signal. The energy of real valued sequence is given by __________ x(n) = {1, _, 3, _, 5, _, 7, _, 9, 10, _, 8, _, 6, _, 4, _, 2, _}

A 2[12 + 22 + 32 + 42 + 52 + 62 + 72 + 82 + 92] + 102

B 10

C 102

D 2[12 + 22 + 32 + 42 + 52 + 62 + 72 + 82 + 92 + 102]

ANS:B - 10

R x (t) ⇒ t → 0 Rx(0) = E.