Problem 1.17

Problem 1.19

Problem 2.1

Problem 2.3

Problem 2.5

Problem 2.7

Problem 2.8

Problem 2.9

Problem 2.10

Additional Problem: For each of the following, determine whether the process is wide sense stationary:

1. (i) x [k] = A where A is a random variable with pdf fA(a).
2. (ii) x [k] = A cos(kω) where ω is a constant and A is a Gaussian random variable with mean μA and standard deviation σA.
3. (iii) x[k] = A cos(kω) + B sin(kω)where ω is a constant and A and B are uncorrelated zero mean random variable with the same standard deviation σ.