Statistical Digital Signal Processing Interview Questions and Answers:
1. What is an ergodic process?
Ans. A stationary random process {Xn} is said to be ergodic, with probability 1, if all the statistical averages can be determined from a single realization of a process.
2. When the powerdensity spectrum of a random process is even function?
Ans. If the random process is real, then the power density spectrum of a random process is even function.
3. When a stationary random process is white?
Ans. A stationary random process is said to be white if its power density spectrum is constant.
4. Define the bias of an estimator
Ans. The bias of an estimator is defined as the difference between true value of the parameter minus the expected value of the estimator
5. When an estimator is asymptotically unbiased?
Ans. An estimator is asymptotically unbiased if
